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Now to start of, I have a T-mobile MDA with the 2.17 rom upgrade. My problem is my battery would jump from say 50 % to like 90%. Like today the battery was completely dead and i charged it up to 57% and hat to stopp because i had to run to the gym. Im at the gym and look at my power it mysteriously jumped up to 91%. now i know it doesnt have 91% because it was only charging for about a half hour. anyone know why it does this. Also i notice that when it does this the battery drains really fast until it gets down to the number it would normally be at if it didnt jump. Thank you in advance
about the battery...
If you recharge your battery every day when it has anything between 45% and 70% leaving it charging overnight, what effect will it have?
The battery producers claim that batteries don't have the "memory effect." Is it entirely true?
jok3sta said:
Now to start of, I have a T-mobile MDA with the 2.17 rom upgrade. My problem is my battery would jump from say 50 % to like 90%. Like today the battery was completely dead and i charged it up to 57% and hat to stopp because i had to run to the gym. Im at the gym and look at my power it mysteriously jumped up to 91%. now i know it doesnt have 91% because it was only charging for about a half hour. anyone know why it does this. Also i notice that when it does this the battery drains really fast until it gets down to the number it would normally be at if it didnt jump. Thank you in advance
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I have had this issue as well - my suggestion leave it charging and try not to use it while its charging - or if you do remove it from the charger. Last night my charge went from 85 to 100% and light went green. But today during light usage I went from 100 right back to like 86% immediately not gradually.
Some sort of bug I think
yah i guess its just a bug. I wonder how many others are experiencing this
Wierd charge readings
I'm getting the same thing. I am also running the 2.17 ROM but I only noticed it yesterday. I've had the 2.17 ROM for about 3 or 4 weeks but never noticed it happening before. For me it happens if I'm charging and then for whatever reason disconnect the unit from the charger. It jumps to 100% and i guess there is some internal circuitry which prevents any further charge being applied. Nothing scientific but it doesn't appear to happen if I'm charging off the laptop using a USB cable. Has only happened with mains charger. Might do some tests later on to try and find something more concrete but on the other hand I'm not sure that it bothers me much.
I've been slowly draining my G1 since yesterday, with wifi on and auto-check email every 10 minutes. It lasted almost 24hrs before 2%.
I noticed it slowly went to 2% around 12pm today and at around 5:30pm, it finally shutdown. That's almost 6 hours using the last 2% of battery. I did check battery status a few times and also checked websites/market for a few minutes during the last 2%.
Is this odd? Should I wipe my battery stats? It doesn't seem calibrated to me.
Does it happen often that it hangs at 2%, if so wipe the stats and drain and shut off and recharge. Could just be the new battery breaking in.
aceo07 said:
I've been slowly draining my G1 since yesterday, with wifi on and auto-check email every 10 minutes. It lasted almost 24hrs before 2%.
I noticed it slowly went to 2% around 12pm today and at around 5:30pm, it finally shutdown. That's almost 6 hours using the last 2% of battery. I did check battery status a few times and also checked websites/market for a few minutes during the last 2%.
Is this odd? Should I wipe my battery stats? It doesn't seem calibrated to me.
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When you wipe stats you should let the battery die out then fully charge to 100. You should be happy you get so much time out of 2% though
Actually this has happened to me, it seems that once the phone enters the 5% range, it lasts just as long as everything else put together.
i wish i were that lucky to claim any of these things. My phone under very very moderate usage lasts about 2-3 hours from fully charged. It has been like this for a while and the ROM i'm running now is just making it worse. if i dont touch and send a couple texts messages it'll last up to 4 hours but that's it. I'm going to reset the stats and see if that corrects it before i go and buy a new battery.
bdveteran18 said:
i wish i were that lucky to claim any of these things. My phone under very very moderate usage lasts about 2-3 hours from fully charged. It has been like this for a while and the ROM i'm running now is just making it worse. if i dont touch and send a couple texts messages it'll last up to 4 hours but that's it. I'm going to reset the stats and see if that corrects it before i go and buy a new battery.
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Which is weird because using the stock battery I can get 12+ hours with moderate usage, this includes browser and wireless tethering.
I've been recharging it for a few hours now. The phone is off. It'll charge for another 10 hours before I turn it on.
Should I have wiped battery stats before I started charging? Or can I just wipe it before I boot up Android?
aceo07 said:
I've been recharging it for a few hours now. The phone is off. It'll charge for another 10 hours before I turn it on.
Should I have wiped battery stats before I started charging? Or can I just wipe it before I boot up Android?
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I guess wiping them at full power wont hurt, but then you must then let it fully die again and recharge it fully.
I just unplugged it from the charger. Booted into recovery, wiped battery stats, then rebooted. It now says it's at 87%. Somehow it took 13% to do those 2 things.
Hrmm, your battery life shouldn't be that bad, custom rom or not. Did you overcharge your battery? That seems to be a common cause for poor battery life.
AroundTheWorld said:
Hrmm, your battery life shouldn't be that bad, custom rom or not. Did you overcharge your battery? That seems to be a common cause for poor battery life.
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How do you overcharge it? Shouldn't it stop when it think it's full?
This morning I used 'battery info' in the settings area and it only said the voltage was 4.05v or something and at 91%. This was for at least 9hrs with phone off and using HTC usb charger. I plugged it back in, while the phone was on, and it charged to 'full' in 10 minutes.
I'm recharging with phone on now tonight. I'm also currently using my motorola razr usb charger. It seems to charge faster than the HTC usb charger. It's voltage is now 4.15v and 61% now.
AroundTheWorld said:
Hrmm, your battery life shouldn't be that bad, custom rom or not. Did you overcharge your battery? That seems to be a common cause for poor battery life.
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Click to collapse
How do you overcharge a battery? If you mean leaving it plugged in long after it's fully charged, that is such a common thing to do it seems like lots of people would have battery problems. Almost everyone I know plugs their phone in before bed, and unplugs it in the morning. Most phones are fully charged in under 4 hours, so that leaves roughly 4-5 hours of being plugged while already fully charged every single day.
Well I'm basing that claim off of a t-mobile rep (hahah reliable isnt it?) who told me that overcharging the battery, or keeping it plugged for the majority of the day (which is what i tended to do) could harm the battery, causing it to give off false percentages or making it unable to hold a charge.
And also, from personal experience, my battery did begin to bulge outwards, and would not hold a charge for more than 4 hours. So I just assumed it was because I had a tendency to plug my g1 in when it wasn't necessary, and keep it charging. So perhaps my previous claim wasn't so well supported. I just based it off of my experience and what the reps told me.
aceo07 said:
I just unplugged it from the charger. Booted into recovery, wiped battery stats, then rebooted. It now says it's at 87%. Somehow it took 13% to do those 2 things.
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lol haha that sucks
since i download a font pack, keyboard skin and better keyboard once my battery hits 10% it usually dies within 5-7 minutes if i have swift running in the background
but before the most recent updates my battery would last about a hour or more with just swift updating in the background and the music player on pause
My X2's battery seems charging in eternity. Have it plugged almost half a day and still is charging. I'm always turning my X2 off when I'm going to charge it, so I can see the battery icon when it's full. But this one's crazy, when I turn on my phone and looked at how many percent that it has been charged...it says 100%. But then again when I turned it off (still plugged to a charger)...it's still is charging.
titus1 said:
My X2's battery seems charging in eternity. Have it plugged almost half a day and still is charging. I'm always turning my X2 off when I'm going to charge it, so I can see the battery icon when it's full. But this one's crazy, when I turn on my phone and looked at how many percent that it has been charged...it says 100%. But then again when I turned it off (still plugged to a charger)...it's still is charging.
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Click to collapse
Same issue as mine. I wonder what's causing this?
dont worry
this is the problem that many of us are facing with.
no way to get rid of. phone jast charges till 100%, and illumination stops , but the status remains charging. but really its stopped. the charger and battery both get cool.
Had anyone of you did try to send it to SE service center to address this issue?
Many times when I charge the phone the % indicater will just stay at whatever it was when I plugged in the charger. If unplugg the charger for a few seconds and reconnect it again the % indicater will update.
It's just one of those bugs.....
l have contact SE about a month ago..still no reply
titus1 said:
My X2's battery seems charging in eternity. Have it plugged almost half a day and still is charging. I'm always turning my X2 off when I'm going to charge it, so I can see the battery icon when it's full. But this one's crazy, when I turn on my phone and looked at how many percent that it has been charged...it says 100%. But then again when I turned it off (still plugged to a charger)...it's still is charging.
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Click to collapse
It's better to leave the phone on when charging, that way the OS itself can control power management.
Really though, don't worry about it... as it has been said... it's just one of those things
mtechfan said:
It's better to leave the phone on when charging, that way the OS itself can control power management.
Really though, don't worry about it... as it has been said... it's just one of those things
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Click to collapse
Thank you for that info. But, how long does your battery lasts? Mine wouldn't even last 24 hours.
titus1 said:
Thank you for that info. But, how long does your battery lasts? Mine wouldn't even last 24 hours.
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This is a question that is very difficult to answer as it depends on which applications you are running and how you use your phone.
Earlier this week I experienced that the battery dropped from 100% in the morning to less than 20% around 5 PM after having used the phone quite frequently throughout the day.
Yesterday I used the phone very little and from 100% battery yesterday morning I'm now down to 59% after 26 hours of use.
If you want your battery to last make sure you:
- turn off the screen when you do not use the phone
- turn off WiFi and Bluetooth
- don't use the radio
- turn of GPS
Maby someone else have more tips on how to get the battery to last.
here issue is not standby of battery-it is simple charging time and unacceptability of x2 to stop charging procedure. it just go on and on with charging(it does not display when it the battery is full it display that it is still charging-even if the phone is on charger more then 10h!!)
titus1 said:
Thank you for that info. But, how long does your battery lasts? Mine wouldn't even last 24 hours.
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Click to collapse
Sometimes I can use it all day and still have somewhere around 40% to 60% left at the end of the day. If I don't use it that much, it will maybe drop 10% per day. I have gone 3 days once without needing to swap my battery.
I have a standalone charger and 3 batteries. So I swap out the batteries from there every time it is low. It could be possible that the standalone charger does a better job of charging to full capacity.
EDIT: I also leave my 3G on always!
My battery lasts 3 days,about 30min of talk every day,5-10sms,20-30min of wifi,3g is off,gps not using yet...so that is about that.
kronos1 said:
My battery lasts 3 days,about 30min of talk every day,5-10sms,20-30min of wifi,3g is off,gps not using yet...so that is about that.
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3 days? And mine was just about....damn!
Hello,
I noticed some crazy things happening to my N4 during charging yesterday.
It was at about 20% and I had a few hours to charge it before going out for the night. I charged it to about 50% and then stepped out of the house.
After I came home at night, I plugged it in like I do before I go to bed. I woke up after 5-6 hours to use the bathroom and checked my phone. It was stuck at 76% charging. I knew something was wrong because it shouldn't of taken 5-6 hours to get to 76%. I opened my battery settings and noticed something very weird happening.
The indicator was saying "76% Charging" and then "76% Not Charging" and it was alternating between the 2 really fast. It was as if I was taking the plug out of the wall and putting it back in REALLY fast. I checked the outlet and it was fine, it was plugged in just fine (I've been using the same outlet fine for a week)
I restarted the phone and suddenly the battery jumped to 86%. WTF?
I kept it charging and went back to sleep. Woke up few hours later and it got stuck at 76% again! And it sat there bouncing back and forth like before.
I restarted the phone a FINAL time and then finally it fully charged to 100%.
WTF is going on?
Seems like your battery indicator might have been messing up, reboots fix this
Sent from my Nexus 4 using xda premium
Yeah sounds like it but really odd how it got stuck at 76%.
When it hit 86% it just stayed consistently charging but the % wasn't increasing. Looking at the battery graph from last night it seemed to be at 86% for at least a few hours.
Sent from my Nexus 4 using xda app-developers app
I would leave it charging for such a period that it would be at 100% if it was at all normal.
Then reset battery stats, let it fully discharge through use, recharge, and see how it goes.
Ranguvar said:
I would leave it charging for such a period that it would be at 100% if it was at all normal.
Then reset battery stats, let it fully discharge through use, recharge, and see how it goes.
Click to expand...
Click to collapse
Reset battery stats without root permissions? Don't think it's possible, right?
A few others experiencing this, here's one other thread, there are more mentions of it elsewhere. http://forum.xda-developers.com/showthread.php?t=2012885
I submitted a report here: http://code.google.com/p/android/is...4"&colspec=ID Type Status Owner Summary Stars
CMNein said:
A few others experiencing this, here's one other thread, there are more mentions of it elsewhere. http://forum.xda-developers.com/showthread.php?t=2012885
I submitted a report here: http://code.google.com/p/android/is...4"&colspec=ID Type Status Owner Summary Stars
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Click to collapse
Thank you for the info!
mortal300 said:
Thank you for the info!
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Click to collapse
NP. I'm trying to get data on Li-Po batteries that doesn't originate from an RC plane/car/heli website, turns out it's really, really hard
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
Tony_YYZ said:
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
Click to expand...
Click to collapse
this hasn't happend on my nexus yet but something similar happened to my LG Nitro HD. I basically rooted it and tried some battery calibrating apps on the Play store. In custom recoveries there's also this option to wipe batter status which i think might fix it but i've never tried it.
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
Tony_YYZ said:
will just simply power off as if it doesn't have any power left at all.
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Click to collapse
It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
tni.andro said:
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
Click to expand...
Click to collapse
NovaSense said:
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
Click to expand...
Click to collapse
Kohawk09 said:
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
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Click to collapse
millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
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Click to collapse
I had tried completely discharging it and then leaving it to charge overnight a handful of times without any luck. I ended up just restoring it to factory state and getting a replacement via Google Play Warranty Support. The new unit works just fine. It's an 07/2013 build unit just like the first one if anyone was interested.
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
I can confirm this!
Did help on many devices for me with battery calibration erros...
Last one was a Galaxy S2 last weekend - turned of immediately, showed 0% upon start.
Took battery out for 4 hours, put it back in then and voila... 92% and everythings fine again.
junkinmytrunk426 said:
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
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Click to collapse
No, I do not have a QI charger. I was always using a USB wall charger.