I noticed that I was getting some really bad battery life with only average usage, so I figured that this might be in part due to it being turned on and activated at the store without first being charged. So last night I tried to go through the motions of recalibrating the battery, but there is no way to reset the stats. I finally got the battery down to about 5% and it hovered there for long over an hour with constant audio streaming and then later 3d gaming, so I know it is not reading the battery properly. I charge it all the way with the phone off overnight, and when I get up, it is reading 100% without the disconnect warning. I turn it on and I have been using it all day today, but I am having the same symptoms.
Is there a way to accurately recalibrate the battery sensor?
Having the same problems.
Same problem for me... I recharged my phone to 100% and did a factory reset today, hopefully that helps.
Sent from my SPH-D700 using XDA App
you could try the battery conditioning method that fixed a lot of evo users' battery issues: h**p://forum.xda-developers.com/showthread.php?t=701567
dwyw42 said:
you could try the battery conditioning method that fixed a lot of evo users' battery issues: h**p://forum.xda-developers.com/showthread.php?t=701567
Click to expand...
Click to collapse
I did this and the battery is great! I checked an email and browsed the web for 5 minutes and my battery is at 97 after an hour and a half.
lehaman310 said:
I did this and the battery is great! I checked an email and browsed the web for 5 minutes and my battery is at 97 after an hour and a half.
Click to expand...
Click to collapse
did anyone else try this and have success? I had my phone on 0% for a good long while the other day and it never shut off. There is definitely something wrong with the initial battery calibration for a lot of us.
trying this at the moment. will update when done.
It's a lithium-ion battery, guys... They don't have a memory effect. All calibrating it (as you all call it) is going to do is shorten the overall lifespan of the battery. You can argue all you want, but it only takes a little bit of research to learn all of this. People are too used to the days of nickel-metal hydride and nickel-cadmium batteries where calibration and training were necessary.
These batteries like to hold a charge and be full. They like top-offs and constant charging. If you can, charge your phone mid-day, but at least every night. Draining your battery - especially as regularly as some as you do to "calibrate" it - will only bring it closer to its eventual death.
DevinXtreme said:
It's a lithium-ion battery, guys... They don't have a memory effect. All calibrating it (as you all call it) is going to do is shorten the overall lifespan of the battery. You can argue all you want, but it only takes a little bit of research to learn all of this. People are too used to the days of nickel-metal hydride and nickel-cadmium batteries where calibration and training were necessary.
These batteries like to hold a charge and be full. They like top-offs and constant charging. If you can, charge your phone mid-day, but at least every night. Draining your battery - especially as regularly as some as you do to "calibrate" it - will only bring it closer to its eventual death.
Click to expand...
Click to collapse
No one is talking about draining the battery as a calibration method. Read the post on xda.
odub303 said:
No one is talking about draining the battery as a calibration method. Read the post on xda.
Click to expand...
Click to collapse
Read the first post, got frustrated (a lot of Hero users had the same idea about discharging... poor people probably get awful battery life now), and posted my reply.
The EVO users might be on to something, but that behavior is more associated with a battery that has been let dormant forever. If you have an Xbox 360 (with play and charge kit) or PS3 with multiple controllers, you can test this. Most people use one controller and the extras don't get much play. When you try to charge it, it'll read full much before it is actually full and will die quickly, but if you continue to connect and disconnect the charger, it will keep trying to charge it and eventually will come back to life...
If this is the case with our Epics, I wonder if we're using old batteries... My manufacturing date on my battery is July 27, which means it probably sat around for a little over a month before it got used again. But that shouldn't be long enough to cause this problem.
Did anyone else have an almost-dead battery when they got it? My package said that the battery should have been fully charged, but it certainly wasn't. What is the manufacturing date on everyone else's battery?
DevinXtreme said:
Read the first post, got frustrated (a lot of Hero users had the same idea about discharging... poor people probably get awful battery life now), and posted my reply.
The EVO users might be on to something, but that behavior is more associated with a battery that has been let dormant forever. If you have an Xbox 360 (with play and charge kit) or PS3 with multiple controllers, you can test this. Most people use one controller and the extras don't get much play. When you try to charge it, it'll read full much before it is actually full and will die quickly, but if you continue to connect and disconnect the charger, it will keep trying to charge it and eventually will come back to life...
If this is the case with our Epics, I wonder if we're using old batteries... My manufacturing date on my battery is July 27, which means it probably sat around for a little over a month before it got used again. But that shouldn't be long enough to cause this problem.
Did anyone else have an almost-dead battery when they got it? My package said that the battery should have been fully charged, but it certainly wasn't. What is the manufacturing date on everyone else's battery?
Click to expand...
Click to collapse
The build date on my battery is 7-25-10, and it was really low when I got my phone. Of course, I had no clue because the battery icon in the upper right hand corner is horribly inaccurate lol. I have a feeling a lot of the July 2010 build batteries are defective in some way or another. There is a running thread on adroidcentral where people are posting their phone and battery build dates and what, if any, issues they are having.
DevinXtreme said:
Read the first post, got frustrated (a lot of Hero users had the same idea about discharging... poor people probably get awful battery life now), and posted my reply.
The EVO users might be on to something, but that behavior is more associated with a battery that has been let dormant forever. If you have an Xbox 360 (with play and charge kit) or PS3 with multiple controllers, you can test this. Most people use one controller and the extras don't get much play. When you try to charge it, it'll read full much before it is actually full and will die quickly, but if you continue to connect and disconnect the charger, it will keep trying to charge it and eventually will come back to life...
If this is the case with our Epics, I wonder if we're using old batteries... My manufacturing date on my battery is July 27, which means it probably sat around for a little over a month before it got used again. But that shouldn't be long enough to cause this problem.
Did anyone else have an almost-dead battery when they got it? My package said that the battery should have been fully charged, but it certainly wasn't. What is the manufacturing date on everyone else's battery?
Click to expand...
Click to collapse
Maybe I didn't word my post correctly, but I know about the Ni-Cd/Li-Ion difference, and I know that the Li-Ion's don't have memory, but I am talking about recalibrating the sensor to accurately report the battery life. I know that this prinicple works even if my explanation isn't accurate, because when I first switched to Darchstar's (may his name be praised) CyanogenMod Froyo port, the battery life was terrible; but when I applied the battery fix, the "recalibration", or whatever the proper word is, the battery life increased fivefold. That is what I want to achieve on the Epic, move that extra power which is found on the low end so it is accurately displayed on the scale (no, not physically move it, I just didn't know how else to say that). I'm going to try the Evo fix now and see how that works, but I hate the "Charging Complete" thing, because I woke up, and my phone was at 68% battery, so it just sat there plugged in but not recharging all night.
My battery manufacture date is August 12th, and when I got the phone, I didn't actually look at the real battery life, but the indicator was in the second stop, so it could have been anywhere in a wide range, since the first stop doesn't seem to occur until about 70%.
dwyw42 said:
you could try the battery conditioning method that fixed a lot of evo users' battery issues: h**p://forum.xda-developers.com/showthread.php?t=701567
Click to expand...
Click to collapse
trying this now as i type. hope it works because my battery life is no good lol. let yall know results when im done and test it out
USAF22 said:
Maybe I didn't word my post correctly, but I know about the Ni-Cd/Li-Ion difference, and I know that the Li-Ion's don't have memory, but I am talking about recalibrating the sensor to accurately report the battery life.
Click to expand...
Click to collapse
Your understanding is the same as mine. Tjhe old NiCads needed to be "conditioned" by deep discharge, but the Lithium Ions don't. However, our problem is not conditioning the physical battery, but calibrating the logic on the phone that calculates the battery status. It needs to learn what 0% and 100% look like to phone's sensors.
The sensors themselves, IIRC, are reading two physical properties: voltage and temperature. The calculated percentage is a function of these, but can vary with the state of a given battery unit.
So it is a good idea to do a deep-discharge cycle at the beginning, and maybe occasionally later, to calibrate this function. However, it is also true that a deep discharge is not healthy for the long-term battery life, so the procedure should be performed sparingly.
DevinXtreme said:
Read the first post, got frustrated (a lot of Hero users had the same idea about discharging... poor people probably get awful battery life now), and posted my reply.
The EVO users might be on to something, but that behavior is more associated with a battery that has been let dormant forever. If you have an Xbox 360 (with play and charge kit) or PS3 with multiple controllers, you can test this. Most people use one controller and the extras don't get much play. When you try to charge it, it'll read full much before it is actually full and will die quickly, but if you continue to connect and disconnect the charger, it will keep trying to charge it and eventually will come back to life...
If this is the case with our Epics, I wonder if we're using old batteries... My manufacturing date on my battery is July 27, which means it probably sat around for a little over a month before it got used again. But that shouldn't be long enough to cause this problem.
Did anyone else have an almost-dead battery when they got it? My package said that the battery should have been fully charged, but it certainly wasn't. What is the manufacturing date on everyone else's battery?
Click to expand...
Click to collapse
I had an all but dead battery when I picked up my first phone. I had many other problems with that phone and took it back for another. Unfortunately I kept the original battery. After numerous little problems with the phone, and poor charge times, I swapped the battery out for the one in the charger/battery kit I picked up. It was almost fully charged out of the box. I did a full charge on it, and all the little problems seem to have vanished. The date on the "bad" battery was 7/27/2010. I'm guessing there's a bunch of unreliable batteries out there, and they may be the cause behind other problems people are having.
Now if they can just come up with a fix for the WiFi config file corruption problem, I'm totally sold on this phone.
There is a thread on here that talks about calibrating the battery for an Evo and it did wonders for my phone. I don't have the link but here are the steps:
1. Phone is on. Charge untill told to unplug charger.
2. Unplug charger and turn off phone.
3. Plug in charger and charge until phone beeps (about 1-5 minutes)
4. Unplug charger and turn on phone
5. Charge to 100% again (1-5 minutes)
6. Unplug charger and reboot.
7. All done! Enjoy a new battery.
Before I did this "calibration", I was really feeling bummed that my battery didn't last. I followed a few other recommendations (dark screen, turn off unused services, etc) and I got 1.5 days and still had 10 percent left! This was using the device lightly to moderately. Try it but DO NOT RUN YOUR BATTERY ALL THE WAY DOWN! It's not good for these types of batteries even though there is a safety zone built in.
johnnyh64 said:
There is a thread on here that talks about calibrating the battery for an Evo and it did wonders for my phone. I don't have the link but here are the steps:
1. Phone is on. Charge untill told to unplug charger.
2. Unplug charger and turn off phone.
3. Plug in charger and charge until phone beeps (about 1-5 minutes)
4. Unplug charger and turn on phone
5. Charge to 100% again (1-5 minutes)
6. Unplug charger and reboot.
7. All done! Enjoy a new battery.
Before I did this "calibration", I was really feeling bummed that my battery didn't last. I followed a few other recommendations (dark screen, turn off unused services, etc) and I got 1.5 days and still had 10 percent left! This was using the device lightly to moderately. Try it but DO NOT RUN YOUR BATTERY ALL THE WAY DOWN! It's not good for these types of batteries even though there is a safety zone built in.
Click to expand...
Click to collapse
I'll try this tonight, I did the method that was posted earlier in the evo thread and my charge actually reached 100% for once but was back down to 98% 2 minutes later. I'll try it again I suppose.
p2flol said:
I'll try this tonight, I did the method that was posted earlier in the evo thread and my charge actually reached 100% for once but was back down to 98% 2 minutes later. I'll try it again I suppose.
Click to expand...
Click to collapse
Well I just did it so we'll see how my battery is at work, it still sits at 98% I'm guessing the cells are not balanced.
I did the charge, power off, charge, power on sequence this morning about 5 times. I have the Battery Watcher widget installed, and I just now I charged it until it said it was fully charged and Battery Watcher said it was 97%. I powered off the Epic, and charged it until it said it was full, I powered it on and Battery Watcher said 91%. What's going on?? Is Battery Watcher inaccurate? Is the phone's way of determining how charged it is inaccurate?
USAF22 said:
I noticed that I was getting some really bad battery life with only average usage, so I figured that this might be in part due to it being turned on and activated at the store without first being charged. So last night I tried to go through the motions of recalibrating the battery, but there is no way to reset the stats. I finally got the battery down to about 5% and it hovered there for long over an hour with constant audio streaming and then later 3d gaming, so I know it is not reading the battery properly. I charge it all the way with the phone off overnight, and when I get up, it is reading 100% without the disconnect warning. I turn it on and I have been using it all day today, but I am having the same symptoms.
Is there a way to accurately recalibrate the battery sensor?
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Just topping the battery off, I thought this was funny, took it off charger, and put back on charger. and it still says fully charged + charging.. yeah.. I agree something wack with the sensor. This lasted for 4-5 mins.. then phone gave me pop up/vibrated.. (fully Charged!)
Related
sucks. I know there are threads about this but I just am sick of this. I had the Evo for a bit and I swear that battery life was better.
I don't know if its because of my crappy reception or what--but I can't even last a morning of light use with this phone. Super annoying... I had high expectations but when i'm getting low battery warnings before noon with barely using the phone at all, something has got to be wrong. I did a factory reset, did a full discharge/full charge. after it said fully charged i unplugged and plugged back in. i don't know what else to try. should i replace my phone? ask for a different battery? the date on the battery is 8/14.
Ok my rant is over...publicly that is.
edit: mods you can just delete this thread. i also hate clutter and hate that my rant has added to it. (hopefully we get some sort of update/custom rom soon that fixes battery!)
e3chaos said:
sucks. I know there are threads about this but I just am sick of this. I had the Evo for a bit and I swear that battery life was better.
I don't know if its because of my crappy reception or what--but I can't even last a morning of light use with this phone. Super annoying... I had high expectations but when i'm getting low battery warnings before noon with barely using the phone at all, something has got to be wrong. I did a factory reset, did a full discharge/full charge. after it said fully charged i unplugged and plugged back in. i don't know what else to try. should i replace my phone? ask for a different battery? the date on the battery is 8/14.
Ok my rant is over...publicly that is.
Click to expand...
Click to collapse
The battery life on my EVO is not better.
What do you do with the phone that drains it so much?
Open up your battery statistics. What is using it the most? How long is your display on for (select "display" from battery history and it will say long long it has been on for).
Have you charged it correctly for 1st time use? (charge to 100%, then drain to 0, then charge to 100% again)?
Seems like you are experiencing much faster battery drain than expected. My battery lasts all day long with light use (~22 hours). 10-12 hours under heavy use (3-4 hours of screen on time). I use juice defender as well, and I keep my screen brightness at 0% (still pretty bright) unless I go outside).
hydralisk said:
The battery life on my EVO is not better.
What do you do with the phone that drains it so much?
Open up your battery statistics. What is using it the most? How long is your display on for (select "display" from battery history and it will say long long it has been on for).
Have you charged it correctly for 1st time use? (charge to 100%, then drain to 0, then charge to 100% again)?
Seems like you are experiencing much faster battery drain than expected. My battery lasts all day long with light use (~22 hours). 10-12 hours under heavy use (3-4 hours of screen on time). I use juice defender as well, and I keep my screen brightness at 0% (still pretty bright) unless I go outside).
Click to expand...
Click to collapse
i've done everything you said. this isn't my first smart phone.. i've been around a long time. :-/. from what i have been reading some have been getting the ok battery life while others are in the sinking boat with me. just frustrating..i've been giving it more than one chance since i got it at 8am 1 week ago.
Bro turn off wat u don't need. Auto sync is adrain and having data connected is a drain as well. If ur not using the data then turn it off. U can still txt n get calls. N when u wanna check the net or watever then turn it bak on.
Sent from my SPH-D700 using XDA App
I tried all of that with my epic but it sucked the battery way worse than my evo
Sent from my PC36100 using Tapatalk
In Battery Usage / Cell standby, what is your time without signal? If it's high (like over 10%) this will eat your battery, so you'll need to reset the radio by quickly going into airplane mode (hold power) and leaving airplane mode. TWS will drop quickly. Weird bug, you'll have to do this once every reboot, hope it gets fixed.
Also, if you are in an area like work or home that has wi-fi, leave it always on, turn off "notify open networks" and hit Menu / Advanced to switch the wi-fi policy to "never sleep". When you are at home or work the phone will auto connect to these places and do all data over wi-fi which uses less power than 3G, even when the screen is asleep.
Finally, while I leave on window animations & Google Talk, I turn brightness in the browser and on the phone all the way down and turn off haptic feedback except for the capacitive buttons.
I've been unplugged since 8:30am and have been at work & home and texting all day, light surfing, a few phone calls, apps, etc, and now at 10pm I have 65% battery remaining. I think that's pretty good.
ss4rob said:
I've been unplugged since 8:30am and have been at work & home and texting all day, light surfing, a few phone calls, apps, etc, and now at 10pm I have 65% battery remaining. I think that's pretty good.
Click to expand...
Click to collapse
Wha?! All that and still 65% by 10pm? If I let my phone sit on the desk from 8:30 am by 10pm I would probably be less than 65%.
The range of experiences is just way too wide on this board. I like this phone so much that I've decided to just accept it drains battery and have chargers everywhere. Plus I have 2 in my house purchased in different stores that exhibit the same power consumption.
ss4rob said:
Also, if you are in an area like work or home that has wi-fi, leave it always on, turn off "notify open networks" and hit Menu / Advanced to switch the wi-fi policy to "never sleep". When you are at home or work the phone will auto connect to these places and do all data over wi-fi which uses less power than 3G, even when the screen is asleep.
Click to expand...
Click to collapse
You wanna explain this to me? Do you mean ALWAYS have wi-fi enabled? Or just when I'm at home? I use wi-fi at home for both the better battery life and faster speeds, but I was under the impression that if I always had it on that it would always be searching for signal, thus being entirely counterproductive.
mc-fine said:
Wha?! All that and still 65% by 10pm? If I let my phone sit on the desk from 8:30 am by 10pm I would probably be less than 65%.
The range of experiences is just way too wide on this board. I like this phone so much that I've decided to just accept it drains battery and have chargers everywhere. Plus I have 2 in my house purchased in different stores that exhibit the same power consumption.
Click to expand...
Click to collapse
This. I don't have all the chargers yet, but come Friday, I'll have two house chargers, an extra computer cable (for school/work), and my car charger. This phone is too awesome to let my battery life ruin it.
I've noticed that web browsing kills it fastest, which wasn't a surprise at all. I usually get 8-10 hours out of it, which is a lot lower than desired, but something I can live with. At least if I get my chargers, I can save the overall life of the battery.
Another thing to mention:
Vibration, while convenient and least annoying to everyone else, is the most power-draining notification you can use. Next is audio. Last is silence (obviously). Having it make noise AND vibrate is like signing your battery life's death warrant.
i think hydralisks epic runs on fairy dust and unicorn blood bc my epic sucked battery like no other.. and thats...screen brightness at 0...no programs running at all. and it still said 77% of battery drain was from the display. lol
+1 yeah battery life does suck worst than evo I rebooted phone once and it was at 40% came back on at 2% had similar problems with moment just have to deal with it juicedefender does help overall its horrible
Sent from my SPH-D700 using XDA App
ryan74701 said:
i think hydralisks epic runs on fairy dust and unicorn blood bc my epic sucked battery like no other.. and thats...screen brightness at 0...no programs running at all. and it still said 77% of battery drain was from the display. lol
Click to expand...
Click to collapse
Fairy dust and unicorn blood = I know how to use a phone. Copying word for word what I posted in the other battery life thread............
I'm convinced that if you know what you're doing, you can make the battery last very long.
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First one reads: 21 hours and 29 minutes. For almost 4 hours of that, the screen is on. So you people saying you get 5 hours of battery life are doing something very wrong... or you have a bad phone. I can easily surpass 4 hours battery life with the screen on the whole time. Some of you don't seem to realize that once the phone hits 10-15%, it takes a LONG TIME to get it down to 0%. This is probably due to the battery just not being calibrated yet. At 6% battery I actually had to watch a whole hour of movies to get it to 0%... and even then the phone did not shut down.
Edit: phone was in airplane mode because the battery was at 0% and I didn't want it to crash before I snapped the photos. Cell standby is a major killer of battery. A solution to that (if you have a large cell standby number) is just to toggle airplane mode on and off when you boot up your phone. It works... dont know why. By my cell standby is almost always down to 5-10% now. More info on this issue here: http://forum.xda-developers.com/showthread.php?t=772571
i agree with hydralisk, try toggling the airport mode on and then off. it will reboot the antenna of the epic. the cell standby mode totally drains the phone's battery reguardless of user activity or not. mine was 51% without signal but after the airport mode toggling, it dropped down to 8% without signal and my battery is somewhat better. (i'm a hardcore user so 8-10 hours is awesome for me. haha)
I can say that my first Epic was a bad phone. It wouldn't even last 3 hours on a single charge! It would discharge while browsing amazon.com and bn.com using the built-in browser and while plugged into the AC charger. I thought I was seeing things.
Today, I've exchanged it for a 2nd Epic. It still does discharge when I'm pounding away on it even though it's plugged into a USB charger. But otherwise, everything else is looking at lot better now, especially AC charging.
So there are good and there are some very bad examples of the Epic out there. I believe I've personally had my hands on both kinds.
e3chaos said:
sucks. I know there are threads about this but I just am sick of this. I had the Evo for a bit and I swear that battery life was better.
I don't know if its because of my crappy reception or what--but I can't even last a morning of light use with this phone. Super annoying... I had high expectations but when i'm getting low battery warnings before noon with barely using the phone at all, something has got to be wrong. I did a factory reset, did a full discharge/full charge. after it said fully charged i unplugged and plugged back in. i don't know what else to try. should i replace my phone? ask for a different battery? the date on the battery is 8/14.
Ok my rant is over...publicly that is.
edit: mods you can just delete this thread. i also hate clutter and hate that my rant has added to it. (hopefully we get some sort of update/custom rom soon that fixes battery!)
Click to expand...
Click to collapse
I'm getting great life with the latest rooted kernel by noobl. 5 hours and phones at 98% medium usage
i am getting similar hours to hydralisk.
i love this phone! it looks like there may be a few bad apples in the bunch, but i hope everyone else who got a good phone is enjoying it as well!
Yes, according to this guy.
http://forum.androidcentral.com/galaxy-tab/44768-bettery-life-results.html
Anyone feel the same way?
its better than i expected, but i doubt its better than sammys tests
Same here it seem way better than I expected but I haven't tested the battery life thoroughly yet but indeed it is very good.
Tomorrow I will be flying back home. I'll be in the air for about 6 hours. I have 2 movies to watch, plus I'll be playing games and will listen to music. I am planning not to charge my tab until I get home. Let's see how it goes. I will update.
Being that my battery use is ~80% display, i should probably consider turning down the brightness. Still, I have been playing with it here and there throught the day (about 7 hours away from the charger now) and the battery level is still 75%
Somebody needs to find a way to mod the autobrightness to have a few options...I like the feature, but it is just a bit too dim for me.
beestee said:
Being that my battery use is ~80% display, i should probably consider turning down the brightness. Still, I have been playing with it here and there throught the day (about 7 hours away from the charger now) and the battery level is still 75%
Somebody needs to find a way to mod the autobrightness to have a few options...I like the feature, but it is just a bit too dim for me.
Click to expand...
Click to collapse
My tab lost 10% battery for one hour medium usage (display on, 30% brightness, reading mainly). Dose it mean I have a battery issue here?
raymentchen said:
My tab lost 10% battery for one hour medium usage (display on, 30% brightness, reading mainly). Dose it mean I have a battery issue here?
Click to expand...
Click to collapse
no. it just depends on what your doing. Wifi signal strength, Cell radio strength. the position of the moon and sun, etc.
BTW, battery life does not decrease linearly. so the numbers in that post are ridiculous.
the discharge curve will look something similar to this in most cases
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(red line, also note phones cut off the extreme ends of the scale with regards to voltage to promote cell life)
it takes a few days for the battery (more specifically the charging circuitry) to get into a 'groove' when it comes to properly charging the battery and displaying the correct percentage.
if you want to know more about the Batteries in our phones and Tablets look at RCcar and RC plane sites. they use the same batteries as phones do so pretty much everything you learn there will apply here (except our phones don't draw 20+amps! )
http://www.fmadirect.com/lipo_handbook/fma_lipo_handbook_section2.htm
Mine can easily last and day and a half, very impressed with the battery
crazy talk said:
no. it just depends on what your doing. Wifi signal strength, Cell radio strength. the position of the moon and sun, etc.
BTW, battery life does not decrease linearly. so the numbers in that post are ridiculous.
the discharge curve will look something similar to this in most cases
(red line, also note phones cut off the extreme ends of the scale with regards to voltage to promote cell life)
it takes a few days for the battery (more specifically the charging circuitry) to get into a 'groove' when it comes to properly charging the battery and displaying the correct percentage.
if you want to know more about the Batteries in our phones and Tablets look at RCcar and RC plane sites. they use the same batteries as phones do so pretty much everything you learn there will apply here (except our phones don't draw 20+amps! )
http://www.fmadirect.com/lipo_handbook/fma_lipo_handbook_section2.htm
Click to expand...
Click to collapse
Well, I understand you saying here. But 10% (90% to 80%) per hour for reading ebook only is far away from having a good battery at 4000mah. I will give it a few more days to check.
calin75 said:
Tomorrow I will be flying back home. I'll be in the air for about 6 hours. I have 2 movies to watch, plus I'll be playing games and will listen to music. I am planning not to charge my tab until I get home. Let's see how it goes. I will update.
Click to expand...
Click to collapse
Well? How did that go?
Sent from my GT-P1000 using XDA App
raymentchen said:
Well, I understand you saying here. But 10% (90% to 80%) per hour for reading ebook only is far away from having a good battery at 4000mah. I will give it a few more days to check.
Click to expand...
Click to collapse
That's 10 hours at that usage, give or take, and right around what I'm seeing, 10% per hour of actual usage as an ebook, about 2-5% per hour if it's just sitting there connected, and about 15-20%/hour with heavy surfing or game playing.
I expect if I'm careful and keep the connectivity to a bare minimum, I can stretch 12 hours out of it when travelling.
Oh, and everyone...let the battery run down to zero at least once, preferably twice. We're talking total discharge to the point the phone turns itself off, then charge to 100%. This doesn't hurt or help the battery, but it does help make the actual battery monitoring more accurate.
honestly im not too impressed with the battery. i think the standby time sucks too. the iPad doesnt do a lot of things right, but the one thing it seems to do is to last for days. i realize the battery is close to twice as big but i was just use to that. i mean sure i dont use my ipad anymore, but it seems to last forever. anway, when i first got my tab, i managed to drain it in less than 6 hours. that was right out of the box (so it proly wasnt full all the way, but close to it). i was mad when that happened. that was with the brightness on auto and everything turned off except wifi. i could be just expecting too much. i thought conditioning the battery would be good for it. so i let it die all the way and recharged it to full. today, i wouldnt say i used the tablet like i usually would (i am a HEAVY user) and its been less than 12 hours and its already at 21%. this time it was running on 3G and brightness on low (not all the way, but about 30% or so). i dont even set the brightness to the highest cuz its too bright, auto seems to work the best. maybe im just being a tough critic. i mean my nexus only lasts like 5 hours now a days cuz i just use it too much. but im so use to just picking up another battery and moving along.
been having a good battery life after draining the battery to 3% twice then charging it to full again and now it almost last me 2 days better than my old nexus one using it primarily for comic book reading and bluetooth stereo music almost 6hrs. per day and a little gaming of angry birds and a little video and youtube + browsing calling and texting really don't like games too much
@croak
i've read a forum sometime ago that it's bad to drain li-ion to 0% so i think its better to drain it to near zero before charging again as i've read it may damage the cells if you drain it to 0%
how often should we condition the battery? (let it drain near 0 and charge up)
geogetski666 said:
@croak
i've read a forum sometime ago that it's bad to drain li-ion to 0% so i think its better to drain it to near zero before charging again as i've read it may damage the cells if you drain it to 0%
Click to expand...
Click to collapse
Doesn't hurt a lithium ion battery much at all, it's just another charge cycle.
But if you don't go down to the point that the device shuts off at least once, your battery meter can and often will be off by a good bit. There's never any confirmation. When yours was reading 3%, it might have actually been 8%, or it may have been 1% or less, but until you zero it out, you'll never know, and neither will the device. It'll still know when it's at 100%, but any reading below that can be inaccurate.
And keep in mind, this is NOT zero charge, it is not completely drained (the device does the auto-shutdown specifically to AVOID a complete drain).
ayman07 said:
how often should we condition the battery? (let it drain near 0 and charge up)
Click to expand...
Click to collapse
Lithium Ion batteries don't need to be conditioned. But if you want to calibrate the battery meter, you'll need to do it at least once.
Using my Tab as a 3rd device, with my 1st being a HTC Evo and my 2nd being a Motorola i890, i am very impressed with the battery. Even treating my 1st and 2nd devices as red-headed step children and my Tab being in my hands more then them, my battery is yet to go below 50% in a day, the week i have had it. Even with checking 7 different email accounts every 5 min. Also, my Tab is on Wifi a majority of the day, which i would think puts more of a drain on the battery.
i was a little worried when i found out that the battery was not accessable to be able to swap it out at some point of the day. I have (6) batteries for my Evo, 2 red and 4 blacks. Before my tab, if my evo didnt touch a charger during the day, i would use atleast 4 of those batteries during the day. Yea, the size difference between the Evo and Tab battery is different, so i figured i wouldnt need 5 more Tab batteries, but atleast 1 or 2 extra.
My only complaint with regards to Power/Charging is the length of the USB Charge/Data cable. It is super short. i bought a 6ft extention @ Staples for about $5!
The fresh Tab battery is only spoiling us and will get worse as time goes by. I have been looking for other options in the mean time. Here are a few options i found:
ZAGGsparq 4000 mAh $90 @ fommy
Mophie - Juice Pack Powerstation 3600 mAh $99 @ BestBuy
ClearMax External Battery Pack 5000 mAh $39 @ eBay (questionable)
eGear UB-181 1800 mAh $19 @ eBay
eGear S220 (3-way charge: Solar,ac&usb) 2200 mAh $39 @ eBay
Yoobao YB-602 Power Bank (White or Black) 4800mAh $49 @ eBay
Personally, i think i am going with the Yoobao or Mophie or ZAGG.
***EDIT***
the ZAGGsparq is 6000 mAh, NOT 4000 like i stated above...
Yoobao has only 800 mA of output, too few !
Sent from my GT-P1000 using XDA App
The ZAGG has 2 x 1000 mAh. i wonder what the output is @ 1? I doubt very much that it is 1 x 2000 mAh...
Im impress with the batterry , way much better than my Ipad that I just sold ...
I've been one of those that have ALWAYS had terrible battery life with my Nexus. Even using SetCPU and Juicedefender, it would drain horribly, even while it was asleep. I've had three different stock HTC batteries and also used the Seido 1600 mAh, none of which made any difference.
I finally decided to try an extended battery, if for no other reason than to simply get a little more juice so maybe my battery would last longer than 6-9 hours. I figured I could always return it anyway. The only way I have ever gotten 12 hours out of a battery is to not use the device hardly at all. I went with the Mugen 3200 mAh extended battery because the Seido 3200 mAh has a battery door that does not seal the device so dust can get in. I might have tried Amzer but I didn't know they existed until after I bought the Mugen. All I know is that I am freaking THRILLED. Right now, I am sitting at 82% and I have been unplugged for 7 hours and 55 minutes!! I'm still only on my third cycle!!! Yesterday I was at 55% after 18 hours of use when I finally started a new charge cycle. I'm talking normal-to slightly heavy use...I even streamed two episodes of Seinfeld from TBS.com.
I'm posting this for those that are at their wit's end over battery life on their Nexus One. I swear I always thought the Nexus One was defective when it came to battery life. Now I know I have always had crappy batteries.
This is in no way an advertisement for Mugen..I have not been paid or given a discount, or been asked to post a glowing review...I'm just so happy about the Mugen working beyond my expectations. On top of this: I managed to break one of the pegs on the extended battery door they sent which makes it a little loose. I contacted them and before they even replied they started shipping me a new one at no charge!
Anyway, if you are having the same issues as I have been I would suggest a 3200 MAH extended battery. Either Mugen or you can try Amzer. I personally would not get the Seido based on their battery door not being sealed with the potential to let dust in, and the fact that my experience with their 1600 mAh battery was so bad. I'll personally always go with Mugen from here on out based on performance + customer service. If something goes wrong I already know they will take care of it one way or another.
Remember the drawbacks tho: slightly larger profile due to larger size battery and door, cases will not fit device any longer, and it will not fit in car dock any longer. In my case I have put a stock battery and original OEM battery cover in my car so if I want to use the car dock I can just switch batteries and back covers.
Anyway I hope this helps someone find peace with battery life. It's been driving me up the wall for almost a freaking year now. I never dreamed I could get this kind of battery life out of my Nexus One. So nice to be able to stop checking battery status all the time.
how much thicker is it?? can ya post a pic?
pics or it didnt happen.
or as they say on 4chan "tits or gtfo"
Okay here they are guys, I have two Nexus Ones so I used one of the to take the pics, unfortunately I cannot do a side by side of the two Nexus Ones because I need one to take the pics as I do not have any other camera:
first a comparison of the Mugen 3200 and the HTC stock:
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now the Nexus with stock cover:
With extended cover:
over the top Mugen and stock:
mugen and stock on top of one another:
And finally, the broken peg on the extended door which I broke and Mugen are replacing for free(it's the peg on the top):
sorry the pics are so big I don't usually do this but I suppose it might help that they are big. If you want more info or pics just ask. hope this helps. Tomorrow I will post a pic showing how long the device has been unplugged with the remaining battery percentage in the status bar at the same time to prove my claims. I cannot do it now since I pulled the Mugen to take the pics. I should have done that pic first, then pulled the Mugen.
I just want folks who are in my same position to know there IS a solution, albeit with drawbacks such as not being able to use a case. I have to admit tho: I don't miss any of my cases. The Nexus with this extended back feels great in my hand. The only real drawback for me is the risk of dropping it without the case to protect it. I'm just being more careful and FINALLY enjoying great battery life.
One more thing: this is all done with display brightness at 100% 24-7. I do not like using any other brightness setting so if you choose to use an energy saving brightness setting, your results should be even better. I do however still use setCPU to downclock to 245 while screen is off, and juicedefender with various settings.
Old MuckenMire said:
One more thing: this is all done with display brightness at 100% 24-7.
Click to expand...
Click to collapse
...What?
Maybe I'm the only one this has ever happened to, but whenever I check my battery usage statistics in the default Settings app, Display is listed as the absolute biggest battery hog, by a ratio of at least 2:1 compared to the next highest component on the list. I'm talking like a consistent 60% or more of my battery drain is attributed to the display, and this is even when I have my display set to automatic brightness 24-7. Even if I overclock my CPU to 1152mhz, turn on Bluetooth and GPS, and play games until my battery is almost dead, the display still racks up the highest amount of battery drain.
I hate to dismiss your claims as unscientific, but did you ever think to check your battery usage statistics? Did you ever figure that maybe you could be killing your battery life by leaving the screen on max brightness?
If I leave my phone on automatic brightness, I get a good 15 hours of battery life with moderate usage throughout the day. If I put it on max brightness, I go down to about 6 hours of battery life. Weird, huh?
earlyberd said:
...What?
Maybe I'm the only one this has ever happened to, but whenever I check my battery usage statistics in the default Settings app, Display is listed as the absolute biggest battery hog, by a ratio of at least 2:1 compared to the next highest component on the list. I'm talking like a consistent 60% or more of my battery drain is attributed to the display, and this is even when I have my display set to automatic brightness 24-7. Even if I overclock my CPU to 1152mhz, turn on Bluetooth and GPS, and play games until my battery is almost dead, the display still racks up the highest amount of battery drain.
I hate to dismiss your claims as unscientific, but did you ever think to check your battery usage statistics? Did you ever figure that maybe you could be killing your battery life by leaving the screen on max brightness?
Click to expand...
Click to collapse
Uh, yeah, no kidding the display brightness kills battery...but I do not like turning down the brightness at all, it hides that beautiful display. Besides don't you think that over the course of a YEAR I tried turning down the brightness?? Sure it saved SOME battery, but not enough to matter...maybe two hours extra which is not even close to being enough for me to justify turning it down. I have two Nexus Ones and have tried the turning down the brightness trick on both and the battery savings is minimal. No-matter how much I turn down the brightness, the display is ALWAYS listed as the biggest battery hog(unless I use the phone for calls a BUNCH that day)
and I never claimed any of this was scientific. Try a 3200 mAh battery or don't, I don't care...I'm just posting my results. To me getting 18 hours out of a battery and not even being at 50% yet is a huge difference...far better than turning down the brightness.
But again these are my results and I cannot PROMISE anyone else will see the same thing. Can't hurt to try and just return it if it doesn't work out. God knows I tried everything else over the course of a year.
If you want to fault me, I guess I shouldn't have said "there IS" a solution since I cannot promise this result for everyone or anyone but myself.
well the battery is double the capacity of the stock one, why would you be surprised that you get so much battery life? I'd be surprised if it doesn't.
Mokurex said:
well the battery is double the capacity of the stock one, why would you be surprised that you get so much battery life? I'd be surprised if it doesn't.
Click to expand...
Click to collapse
Because i'm getting FAR better than double battery life. If I had gone from 9-12>>>>>18-24, I wouldn't have even made this post. But I have gone from 9-12(oftentimes 6-9 with heavy Flash use)>>>>>>>over 40 hours with normal to heavy use, even streaming Flash episodes and movies.
This is not for the normal person with pretty good Nexus battery life: this post was/is for people like me who have been frustrated by people posting that they get all kinds of great battery life from their Nexus but are never able to get it themselves. I finally got it for myself.
hell I saw a video review by some kid of this Mugen battery and he said he thought it was great but was giving it away because he already gets great battery life on his Nexus ....that pissed me off right there. I was like what the hell???
here it is:http://www.youtube.com/watch?v=AzSm2fBOBFQ
so yeah I'm excited to finally have great battery life myself and thought I would pass it along as a possible solution for others
Old MuckenMire said:
Uh, yeah, no kidding the display brightness kills battery...but I do not like turning down the brightness at all, it hides that beautiful display. Besides don't you think that over the course of a YEAR I tried turning down the brightness?? Sure it saved SOME battery, but not enough to matter...maybe two hours extra which is not even close to being enough for me to justify turning it down. I have two Nexus Ones and have tried the turning down the brightness trick on both and the battery savings is minimal. No-matter how much I turn down the brightness, the display is ALWAYS listed as the biggest battery hog(unless I use the phone for calls a BUNCH that day)
and I never claimed any of this was scientific. Try a 3200 mAh battery or don't, I don't care...I'm just posting my results. To me getting 18 hours out of a battery and not even being at 50% yet is a huge difference...far better than turning down the brightness.
But again these are my results and I cannot PROMISE anyone else will see the same thing. Can't hurt to try and just return it if it doesn't work out. God knows I tried everything else over the course of a year.
If you want to fault me, I guess I shouldn't have said "there IS" a solution since I cannot promise this result for everyone or anyone but myself.
Click to expand...
Click to collapse
Your original problem wasn't that your stock battery was bad, it was that you kept your screen brightness too high to be suitable for daily usage. Proposing that the only working solution for yourself was to buy an extended battery is very misleading, because really all you had to do was turn down the display brightness, and make sure to turn off unnecessary services like GPS, Bluetooth, etc.
Furthermore, your solution, which is to outfit the Nexus One with the Mugen extended battery, costs $80, while it costs absolutely nothing to simply press a button and save your battery by turning things off and dimming the screen.
It's fine if you want to buy an extended battery so you can blast your display, but it's not the only solution, and is possibly the worst in terms of cost-effectiveness. Anybody at their wit's end about their battery life should try everything else first, and only then when they are completely dissatisfied with the way the screen looks, the lack of available services, or the lack of speed in processing, should they consider purchasing an extra battery.
earlyberd said:
Your original problem wasn't that your stock battery was bad, it was that you kept your screen brightness too high to be suitable for daily usage. Proposing that the only working solution for yourself was to buy an extended battery is very misleading, because really all you had to do was turn down the display brightness, and make sure to turn off unnecessary services like GPS, Bluetooth, etc.
Furthermore, your solution, which is to outfit the Nexus One with the Mugen extended battery, costs $80, while it costs absolutely nothing to simply press a button and save your battery by turning things off and dimming the screen.
It's fine if you want to buy an extended battery so you can blast your display, but it's not the only solution, and is possibly the worst in terms of cost-effectiveness. Anybody at their wit's end about their battery life should try everything else first, and only then when they are completely dissatisfied with the way the screen looks, the lack of available services, or the lack of speed in processing, should they consider purchasing an extra battery.
Click to expand...
Click to collapse
dude I already told you that turning brightness all the way down only netted me about two hours more battery life using stock battery. And thanks for quoting my post about being at "wit's end"...by definition if you are at your wit's end you have already tried everything else.
is this the best you can do or are you just argumentative tonight??
I fully stand by everything I have written
and for the record, turning off GPS, turning down brightness, turning off bluetooth, etc.., is not a REAL solution, unless you consider crippling your device to keep it powered a solution, which apparently you do.
Maybe I should just turn the whole device off.... then I'll get weeks and weeks of battery life.
Thanks for taking the time to post pics. I too use my display at 100% bright and love the effect. I have a spare battery i use and a charging dock ( not oem ) and i get by doing it that way and can make it abotu 12 hours before i have to reload the other battery ( stock battery )
I had a mugen on my g1 and it was an awesome addon. However, the otterbox defender im using now wont fit a modded case, so this was the best solution for me.
i think we all are great to find solutions. Even if different ones. One thing i did find with the "fat phone" was that it felt better in my large hands and was more comfortable to type on.
Make sure to post a follow up to this with final thoughts on the battery . and thanks again for tits
android01 said:
Thanks for taking the time to post pics. I too use my display at 100% bright and love the effect. I have a spare battery i use and a charging dock ( not oem ) and i get by doing it that way and can make it abotu 12 hours before i have to reload the other battery ( stock battery )
I had a mugen on my g1 and it was an awesome addon. However, the otterbox defender im using now wont fit a modded case, so this was the best solution for me.
i think we all are great to find solutions. Even if different ones. One thing i did find with the "fat phone" was that it felt better in my large hands and was more comfortable to type on.
Make sure to post a follow up to this with final thoughts on the battery . and thanks again for tits
Click to expand...
Click to collapse
No problem man, and I agree with you about us each finding our own solution. After I get done cycling it two more times(per instructions) I will post final results. I have to admit I do fear it losing capacity...almost like I can't believe these results will be maintained. My worst fear is that in a couple weeks things will start going downhill again. If it does go downhill later I will report that, too.
Good to know. When I see these threads I wonder what I'm missing with my phone, cause I get 2-3 days with my battery. I must be missing out on something cool.
I can get that with mobile data turned off, but when it's contatly syncing 3 email accounts, facebook, twitter, news, weather etc over 3G, I kind of expect it to take a hit.
Mokurex said:
well the battery is double the capacity of the stock one, why would you be surprised that you get so much battery life? I'd be surprised if it doesn't.
Click to expand...
Click to collapse
Except it's not.. All of these third party extended batteries are 75-80% of their stated capacity. Therefore his battery is at best 83% larger.
http://batteryboss.org/ says that Mugen 3200 are 75% of their rated capacity, therefore more like 71% more capacity than the stock battery.
Old MuckenMire said:
Because i'm getting FAR better than double battery life. If I had gone from 9-12>>>>>18-24, I wouldn't have even made this post. But I have gone from 9-12(oftentimes 6-9 with heavy Flash use)>>>>>>>over 40 hours with normal to heavy use, even streaming Flash episodes and movies.
Click to expand...
Click to collapse
To me this sounds like your stock battery is defective.. You ever tried replacing it? Try this, I bookmarked it a few days ago just in case..
http://forum.xda-developers.com/showthread.php?p=9517689#post9517689
I would be really interested to hear at what percentage your phone would shut down when this battery was empty.
wow nice i'd buy a mugen battery only if they didn't lie on the specs blatantly.
When was the last time that you cycled your stock HTC battery?
khaytsus said:
To me this sounds like your stock battery is defective.. You ever tried replacing it? Try this, I bookmarked it a few days ago just in case..
http://forum.xda-developers.com/showthread.php?p=9517689#post9517689
Click to expand...
Click to collapse
Yes I've replaced my stock battery with two others: stock HTC batteries and a Seido 1600mAh extended battery, all with the same results(bad battery life). I just bought them tho and didn't bother with warranty replacement. Looking back I guess I should have. Anyway I DO think it's possible they are all defective due to my having repeatedly run them down to 0% at times. The Mugen came with a warning to never ever run the battery down to zero percent. I have also read here and at other sites that running them all the way down is bad for them. I'm no battery expert so I cannot say for sure, but you make a valid point.
pwig said:
I would be really interested to hear at what percentage your phone would shut down when this battery was empty.
Click to expand...
Click to collapse
My stock batteries would sometimes shut down the Nexus even tho it still showed 15% of power left: I would resolve this by wiping batter stats in recovery. Yes this is a concern I have but I cannot test it as I am not willing to drain this Mugen below 20%. Right now the battery has been off charge for 21 and a half hours and I am at 59% battery life left. When I am done cycling this battery I will hopefully never have to deal with seeing that battery get to even close to 15%, 20%, etc.. because I will be going to bed and putting it on charge long before then. Also, I do not want to risk draining this battery 100% as Mugen warns not to do that. They are very explicit about this.
Rusty! said:
I can get that with mobile data turned off, but when it's contatly syncing 3 email accounts, facebook, twitter, news, weather etc over 3G, I kind of expect it to take a hit.
Click to expand...
Click to collapse
I must also add that I do not use Facebook or Twitter(I use launcherPro Twitter widget but sync it manually) I removed the official apps via Titanium. Thought I should mention this since you reminded me with your post. This can also contribute to my good battery life, although it never did much good with the stock batteries, but again maybe they are defective.
greenstuffs said:
wow nice i'd buy a mugen battery only if they didn't lie on the specs blatantly.
Click to expand...
Click to collapse
i've read the same here at XDA and at other sites and it's a valid concern worth mentioning. For me it doesn't matter what they rate the battery at as I'm experiencing fantastic results, but that does not mean Mugen does not fudge numbers. So again a valid concern. My advice is to try it and return it if you do not get satisfactory results. If you get horrible battery life, my opinion is that it's worth a try.
Paul22000 said:
When was the last time that you cycled your stock HTC battery?
Click to expand...
Click to collapse
hey Paul, yes I cycled the stock and Seido as recently as last week. I've tried every trick you find in a search here at XDA or Google. I even tried that trick where you drain the battery repeatedly to reset the battery meter, then charge it back. Also tried the trick of power to 100%, letting it drop to 99%, then turning off and placing back on charge. Light turns amber again and charges for another 30 minutes or so. All this did was make it stick at 100% for some extra time(usually an hour) then it would start dropping faster than normal tho.
Just for the record guys: I understand the skepticism. I was always skeptical of battery power claims. I suppose I wouldn't believe me either if I were just reading my posts and not experiencing this.
Again: I have been off power since 2pm yesterday and I am at this moment at 58% battery power left. I did sleep for six hours and didn't use the device for that period, but still, for me, this is incredible.
EDIT: one other thing I forgot to mention I do: I am ALWAYS checking and making sure my Nexus is sleeping properly via Spare Parts. I have had apps that cause my device to not sleep properly and that hurts battery life. In fact, just yesterday I caught the latest WeatherBug Elite update causing my Nexus not to sleep for the second time since they started recently updating it. I have now returned to a previous version I backed up and am having no sleeping issues at this time. If you are having poor battery life it is something to check and keep an eye on.
Many of you have read byrong's article on actual battery charge.
http://forum.xda-developers.com/showthread.php?t=871051
He discusses the creep down from 100% to 90% overnight; as well as bump charging.
I am offering a solution that will give you 100% (or over 100% if you so choose) every night without any effort after initial setup.
Lets first look at the charger:
Output:
5v
1000 mAh
So every hour, your charger could potentially flow 1000 mA into your battery, right? There's actually two contingencies:
How much can the battery pull, and the roll-off at the peak of the charge.
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"lightbox_download": "Download",
"lightbox_share": "Share",
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According to byrong's data, the last 10% charge rate rolls from 650 to 100mah in 45 minutes almost linearly. Prior to this roll-off, we are seeing 650 mAh pull from the battery which appears to be linear.
Ok now we can do our time calculation:
mAh of your battery: A = (1300 for stock)
Charge Rate: CR = (650)
10% roll-off: -(650-100)/(45/60) = -733 mAh/h (approx) Feel free to do the integral .1A/∫(650-733t)dt. Im just going to call it a flat +45 mins.
(A-A*.1)/CR + (45/60) = charge time in hours.
For stock, this is:
(1300 - (.1*1300))/650 + (45/60) = T (h)
T(h) = 2.55 hours. FROM ZERO CHARGE
I normally run down to about 30%. In that case... 1300*.3 = 390 -1300 = 910 mAh to charge
Run the calc again:
(910 - (.1*910))/650 + (45/60) = T (h)
T(h) (30%) = 2.01 Hours
Now what do we do with this?
Say hello to the appliance timer (you can get them at the dollar store):
http://www.amazon.com/50460-24-hour-Multi-Event-Appliance-Timer/dp/B000G1MD80
100% Charge Procedure:
Set ON 2 hours before you normally wake up.
Set OFF sometime prior to when you go to sleep.
You get:
100% charge every morning
If you oversleep, worst case scenario you end up with 90%.
BUMP Charge Procedure:
Set ON 3-4 hours before you normally wake up.
Set OFF 2 hours after that.
Set ON immediately after OFF,
Set OFF .5 hours after,
etc... until you've bumped to your desired level.
From now on just plug your phone in when you go to bed, and wake up to a 10% fresher battery every morning!
If you normally deplete your battery to a point where it will not make it until 2 hours before you wake up, consider setting your first OFF to 30 mins after you normally go to sleep.
ENJOY.
(+ Thnx if it helped you plz!)
After testing different batteries I have sort of a mini stockpile going on, so I'll be using this to bump charge my phone. Before it was just too much of a hassile to bump charge but this makes it easy
awesome, how many bumps do you normally do?
sweeeet. but question; do these appliance timers tick like a timeR? haha that would drive me insane while sleeping
jayochs said:
sweeeet. but question; do these appliance timers tick like a timeR? haha that would drive me insane while sleeping
Click to expand...
Click to collapse
nope. it will tick once when it switched from off to on etc. There are also digital ones.
Simple, ingenious and falls into that "Why didn't I think of that" category. Thanks for the tip.
Just tried this last night, worked flawlessly; woke up @99% charge
vassskk said:
Just tried this last night, worked flawlessly; woke up @99% charge
Click to expand...
Click to collapse
Yep woke up to 97% here so still some tweaking to do, but better than the 92% I normally wake up to.
UHF3 said:
Simple, ingenious and falls into that "Why didn't I think of that" category. Thanks for the tip.
Click to expand...
Click to collapse
Yes it does. Thanks for the idea!
i greatly appreciate mashing of the thnx button
I thought that bump charging was bad for the battery. Is the slight increase in initial charge worth degrading the life of the battery? Any insight on how bad this actually is for the batter?
pharpe said:
I thought that bump charging was bad for the battery. Is the slight increase in initial charge worth degrading the life of the battery? Any insight on how bad this actually is for the batter?
Click to expand...
Click to collapse
Bump charging while the phone is fully turned on has almost no affect because it doesn't truly bump charge- you're just keeping it at 100% instead of having your phone drain it down to ~90% and keeping it there. If you want to go over 100% you have to turn off Android (phone) and purely charge the battery, then if you unplug and do it again that's real bump charging.
If done regularly (with phone turned off) it can and will damage your battery degrading the overall lifespan. The benefit is you can end up with 105-115% normal battery capacity where when you turn on your phone, it will stay at 100% for hours.
But yea when I said bump charging before I meant with the phone on :s
This walkthrough assumes you have read the linked article. Definitely turn your phone off first if you are planning on doing the bumpcharge method.
Sent from my ADR6300 using XDA App
Question for the expert
vassskk said:
This walkthrough assumes you have read the linked article. Definitely turn your phone off first if you are planning on doing the bumpcharge method.
Sent from my ADR6300 using XDA App
Click to expand...
Click to collapse
Love the linked article and this walk through. My questions are do these timers(or the one you linked on Amazon) allow for multiple settings (like 4 different on/off times) or just one time for on and one time for off?
And I'm assuming the initial method is with your phone left on, bump charge with phone turned off? Since you are definitely the expert, which method do you prefer and why?
wkupike2000 said:
Love the linked article and this walk through. My questions are do these timers(or the one you linked on Amazon) allow for multiple settings (like 4 different on/off times) or just one time for on and one time for off?
And I'm assuming the initial method is with your phone left on, bump charge with phone turned off? Since you are definitely the expert, which method do you prefer and why?
Click to expand...
Click to collapse
Almost all timers you can set an on/off time for half-hour increments- the digital ones you can probably be more specific.
Mine I set off/on 3 times right before I wake up.
Bump charging with your phone on will just keep your battery at 100%, since android by default keeps it around 90% if plugged in constantly (keeping a battery fully charged for extended periods of time is potentially damaging/ also reports of cheap batteries that are overcharged or on the charger too long exploding)
Bump charging with your phone off will overcharge your battery, this will cause some battery cells to die and lessen the amount of charge your battery can hold the next time you charge it. If you continue to do this then after 2-4+ months of bump charging, you may end up with a battery that will only bump charge as much as a normal charge used to be. This would be where you either buy a new battery or live with that fact.
+1
Byrong calls bumpchargers 'power users' that will 'buy new batteries every few months.' So it really doesnt matter that your trashing your battery if you perceive the temporary life gain to outweigh the loss of longevity.
Most timers have "multiple events." You just set them using little plastic pins so it really doesn't cost them anything to give you a bunch of pins.
I personally leave my phone on, as it is my 2nd alarm clock. I have my inital off set to 2am (about 30 mins after my usual sleep time) to bring the battery up to the optimal 40% charge it should sit at. My on is set to 6am, 2 hours before i normally wake up. I do not bump, as i am not baller' $$$$$.
vassskk said:
This walkthrough assumes you have read the linked article. Definitely turn your phone off first if you are planning on doing the bumpcharge method.
Sent from my ADR6300 using XDA App
Click to expand...
Click to collapse
i thought if you charge you phone when its "off" you dont need to bump charge. I always charge mine at night and i will turn it on in the morning after boot i get 99% 2 min later after everything is done loading it still at 99% and i can get a whole day out of it. (stock battery) or if i run pandora for 11 hours (work 8 hours and commute 1.5 hours each way.) i will end up with 13%
Cool, Going to try tonight.
synisterwolf said:
i thought if you charge you phone when its "off" you dont need to bump charge. I always charge mine at night and i will turn it on in the morning after boot i get 99% 2 min later after everything is done loading it still at 99% and i can get a whole day out of it. (stock battery) or if i run pandora for 11 hours (work 8 hours and commute 1.5 hours each way.) i will end up with 13%
Click to expand...
Click to collapse
Well ya, charging your phone regularly with it off will get you 100%, but people like bump charging because you can overcharge the battery to 105-120%
Unless.. what you're saying is I don't need to 'bump charge' with my phone on when I can just normal charge with it off? And to that I say neh! I use mine as my main alarm clock and would like to be woken up if someone calls or texts me (most of the time anyway..)
For some or maybe even most people turning off your phone and charging might be the better choice.
I believe that even charging your phone with it off, will still allow it to creep down to 90% though yea? Those protect circuits are physically part of the battery.
Heres one:
http://datasheet.sii-ic.com/en/battery_protection/S8200A_E.pdf
Ever since I've been on the developer preview for android m, my nexus has been charging from ~10%-100% in about 30-40 minutes using the turbo charger. I was suspicious whether or not the electrical current was lowering as the battery was getting closer to a full charge so I decided to use the app Ampere to see what was going on. From the results I got in the app, I can confirm that the turbo charger isn't working properly and might even be damaging your battery. With a regular charger, the app showed the max output at 380mA and current output was varying around 200-360mA most of the time at ~90% charged. As for the Turbo charger, the max output was 1420mA with the current output varying around 1300-1420mA at ~90% charged. That is significantly higher than the regular charger when the battery is almost fully charged. If these results are accurate, I would highly recommend not using the turbo charger on the android m developer previews since it can potential damage and shorten your devices battery life. I'll update this post if the next preview fixes the issue.:fingers-crossed:
ive been using the turbo charger on my phone every single day since m, now m v2, has been released. not a single issue with using it. and my battery life has been normal as well, about 5-6.5 hours sot daily.
and at 90%, when charging, it should be higher than in a regular charger. the voltage will drop at 92%, and again at like 97 or 98%. and at 100% it rarely stops, as it isnt full yet normally. itll stop when it actually hits full, not 100%.
will it is normal i would say even for 5.1
it get to 1620 mah
and i have another turbo charger(auky) where it reach 2040 mah
simms22 said:
ive been using the turbo charger on my phone every single day since m, now m v2, has been released. not a single issue with using it. and my battery life has been normal as well, about 5-6.5 hours sot daily.
and at 90%, when charging, it should be higher than in a regular charger. the voltage will drop at 92%, and again at like 97 or 98%. and at 100% it rarely stops, as it isnt full yet normally. itll stop when it actually hits full, not 100%.
Click to expand...
Click to collapse
That and m2 preview has battery calibration issues and it may say say battery is at 90% full but it probably isnt
The charging continues even when the indicator is at 100% (i use a different widget to monitor that)
Charging does stop about half an hour after hitting 100%
It does not matter what charger you use.
The calibration is way off with Android M.
holeindalip said:
That and m2 preview has battery calibration issues and it may say say battery is at 90% full but it probably isnt
Click to expand...
Click to collapse
i guess that when my battery dies at 0%, that it isnt accurate either? that 5-6.5 hour sot that i normally get is just my imagination? btw, i charge not til it reaches 100%, but until it actually stops charging. which us usually within 30 min of hitting 100%. oh, and full battery it is.
---------- Post added at 11:29 AM ---------- Previous post was at 11:27 AM ----------
Brotuck said:
The charging continues even when the indicator is at 100% (i use a different widget to monitor that)
Charging does stop about half an hour after hitting 100%
It does not matter what charger you use.
The calibration is way off with Android M.
Click to expand...
Click to collapse
its always like that, not just on m. ive been watching my n4, n5, and n6 charge over the last few years, and it never ever stops charging at 100%. it stops charging when there's no more voltage going in.
I suppose no one has a multimeter they could hook up inline with the charger to actually read the current without relying on software? Even if the current displayed in that app is accurate you'll then have to check the voltage of the battery to eliminate the possibility that a bug is causing the level of charge to be displayed incorrectly, and need a frame of reference for comparison.
simms22 said:
ive been using the turbo charger on my phone every single day since m, now m v2, has been released. not a single issue with using it. and my battery life has been normal as well, about 5-6.5 hours sot daily.
and at 90%, when charging, it should be higher than in a regular charger. the voltage will drop at 92%, and again at like 97 or 98%. and at 100% it rarely stops, as it isnt full yet normally. itll stop when it actually hits full, not 100%.
Click to expand...
Click to collapse
Can you link the source where you got those percentages from? Because those numbers are off from an article I read in the past. Can't seem to find it though.
elvintopalov said:
Can you link the source where you got those percentages from? Because those numbers are off from an article I read in the past. Can't seem to find it though.
Click to expand...
Click to collapse
no, i cant, sorry. the numbers are guesstimates according to me watching them over the years. most articles i never listen to anyways, as most the people who write those articles are generally clueless(in reality).
simms22 said:
no, i cant, sorry. the numbers are guesstimates according to me watching them over the years. most articles i never listen to anyways, as most the people who write those articles are generally clueless(in reality).
Click to expand...
Click to collapse
Quick Charge 2.0 was released about a year ago. And your numbers are guesstimates that have no proof or factual backing where as the article I read was backed by information from Qualcomm (if I recall correctly). The turbo charger starts slowing down around the 50% mark and then progressively gets slower as the battery gets closer to a full charge. If the turbo charger were to still output a significantly higher voltage compared to a regular charger at the percentages you listed, that would still harm the battery. The factual numbers don't lie, but your guesstimates can be inaccurate.
elvintopalov said:
Quick Charge 2.0 was released about a year ago. And your numbers are guesstimates that have no proof or factual backing where as the article I read was backed by information from Qualcomm (if I recall correctly). The turbo charger starts slowing down around the 50% mark and then progressively gets slower as the battery gets closer to a full charge. If the turbo charger were to still output a significantly higher voltage compared to a regular charger at the percentages you listed, that would still harm the battery. The factual numbers don't lie, but your guesstimates can be inaccurate.
Click to expand...
Click to collapse
thats fine, but you can watch the voltage yourself when you charge it. i can only tell you what i see, not what its supposed to be in theory. speaking of, ive been at 100% for 7 minutes, and am still having voltage enter my phone, i mean its still charging(my widget shows 83mA still going into the phone). if you listened to what qualcomm says, they say it stops charging at 100%, will drop to 98%, then itll start charging again. guess what? it doesnt work that way in reality.
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btw, im using the CurrentWidget.
The battery only has to last a couple of years. I wouldn't sweat it too much.
Sent from my Nexus 6 using Tapatalk
It's already been stated elsewhere that there is a bug in preview 2 and it thinks the battery capacity is only 2000mA.
That's why it charges so fast, and drains so fast, and the reason it will charge more if left charging after 100% - and why it doesn't trickle charge when it gets close to 100%..
Luxferro said:
That's why it charges so fast, and drains so fast, and the reason it will charge more if left charging after 100% - and why it doesn't trickle charge when it gets close to 100%..
Click to expand...
Click to collapse
well, no. considering it behaves this way on android 5.1.1, 5.1, 5.0, 4.4, 4.3, 4.2, 4.1, etc..
---------- Post added at 11:53 AM ---------- Previous post was at 11:51 AM ----------
brizey said:
The battery only has to last a couple of years. I wouldn't sweat it too much.
Sent from my Nexus 6 using Tapatalk
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Click to collapse
very true. the chances of me getting rid of the device, or a new device, way before the battery starts seeing age is much better than something happening to it before i get rid of it.
simms22 said:
well, no. considering it behaves this way on android 5.1.1, 5.1, 5.0, 4.4, 4.3, 4.2, 4.1, etc..
Click to expand...
Click to collapse
You are just wrong. So many people have this problem... but yet you don't. It's already been pointed out an issue with the kernel...
Normally when it gets to around 90% it's charge rate will slow to a crawl to prevent battery damage (trickle charging). This doesn't happen on preview 2 because it's not really fully charged, even though it will say it's at 100%.
Luxferro said:
You are just wrong. So many people have this problem... but yet you don't. It's already been pointed out an issue with the kernel...
Normally when it gets to around 90% it's charge rate will slow to a crawl to prevent battery damage (trickle charging). This doesn't happen on preview 2 because it's not really fully charged, even though it will say it's at 100%.
Click to expand...
Click to collapse
listen, as i said ive been watching my devices charge for years. when it hits 100%, it almost never stops charging. a little charge goes into the device for some time after 100%. again, you can watch this. you can flash 5.1.1 instead of m and it will do the same thing. my battery doesnt have an issue on m v2. it acts exactly the same as before m v2. no matter what, i see between 5-6.5 hours sot, that didnt change. now i know some people have issues with the battery on m v2, I AM NOT ONE OF THOSE PEOPLE. i have been with android since the very begining, and am by far not a noobie. all im saying here is exactly what i see, no more, and no less.
simms22 said:
listen, as i said ive been watching my devices charge for years. when it hits 100%, it almost never stops charging. a little charge goes into the device for some time after 100%. again, you can watch this. you can flash 5.1.1 instead of m and it will do the same thing. my battery doesnt have an issue on m v2. it acts exactly the same as before m v2. no matter what, i see between 5-6.5 hours sot, that didnt change. now i know some people have issues with the battery on m v2, I AM NOT ONE OF THOSE PEOPLE. i have been with android since the very begining, and am by far not a noobie. all im saying here is exactly what i see, no more, and no less.
Click to expand...
Click to collapse
I'm also not a noob, and been using Android since the OG Droid. Have had every nexus since. Don't use enable-a-noob tool-kits, blah blah blah. I'm also exclusively using the M Preview since it was released (haven't switched back to lollipop at all - full wipe going to preview 1), and there is a huge difference from preview 1 to 2. Basically I was fully charged when going from preview 1 to 2, and after flashing 2 it drained the battery at an alarming rate to below 15%. But it didn't really, since it was a full charge on preview 1, it ran at less than 5% for hours with no battery saver mode (playing movies trying to make it power off). Fully charged it afterwards, and while better than the 1st battery cycle, it's still messed up. It will charge to full from ~10% in like 30 minutes, and doesn't last as long as M1. So I'm pretty confident that it doesn't completely charge, and that M2 is just messed up...
I'm not sure how it's working fine for you, but since you don't daily driver it, and switch back and forth to different roms, then that might be a reason. But your case seems to be the exception, and not common - most people are complaining about the terrible battery life because something isn't right with the battery /stats/calibration/capacity setting/ of the battery. But your case seems like a one-off.
Luxferro said:
I'm also not a noob, and been using Android since the OG Droid. Have had every nexus since. Don't use enable-a-noob tool-kits, blah blah blah. I'm also exclusively using the M Preview since it was released (haven't switched back to lollipop at all - full wipe going to preview 1), and there is a huge difference from preview 1 to 2. Basically I was fully charged when going from preview 1 to 2, and after flashing 2 it drained the battery at an alarming rate to below 15%. But it didn't really, since it was a full charge on preview 1, it ran at less than 5% for hours with no battery saver mode (playing movies trying to make it power off). Fully charged it afterwards, and while better than the 1st battery cycle, it's still messed up. It will charge to full from ~10% in like 30 minutes, and doesn't last as long as M1. So I'm pretty confident that it doesn't completely charge, and that M2 is just messed up...
I'm not sure how it's working fine for you, but since you don't daily driver it, and switch back and forth to different roms, then that might be a reason. But your case seems to be the exception, and not common - most people are complaining about the terrible battery life because something isn't right with the battery /stats/calibration/capacity setting/ of the battery. But your case seems like a one-off.
Click to expand...
Click to collapse
lol, ive been reading about people with battery issues on m v2 since it came out, i know about it. ive even had one very bad battery day since, but it was a rare circumstance. generally, i keep my phone on a charger for long periods of time, even after 100%. i actually watch it until it stops charging, until 0-1mV is coming in. sometimes it happens 5 min after 100, sometimes 20-30 minutes after. but that charge that still goes in at that point is extremely light, less then 100mV, almost a trickle.
our battery % stats are also not 100% accurate, never have been, from the very begining. its more of an educated guesstimate. so thats another reason, i think, could be why it still charges a little after 100%.
oh, and if you look at my xda history, its extremely rare that i get an issue. most of the time i have no issues when many have them. i yend to fix them myself, if and when i actually have an issue.
simms22 said:
listen, as i said ive been watching my devices charge for years. when it hits 100%, it almost never stops charging. a little charge goes into the device for some time after 100%. again, you can watch this. you can flash 5.1.1 instead of m and it will do the same thing...
Click to expand...
Click to collapse
I concur. My phone on LP charges anywhere from 10 - 30 mins even after hitting 100%. I usually wait for it to stop charging but sometimes I unplug before and then within a few secs it drops to 99/98%.
I can't speak for M as I used it for a very brief period of time.
Khizar said:
I concur. My phone on LP charges anywhere from 10 - 30 mins even after hitting 100%. I usually wait for it to stop charging but sometimes I unplug before and then within a few secs it drops to 99/98%.
I can't speak for M as I used it for a very brief period of time.
Click to expand...
Click to collapse
its the same as in 5.1.1, 5.1, and 5.0 for me