Database Users

Galaxy Tab getting better battery life than official specs?

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 ...

[HOW TO] Read your battery stats correctly!

Everyday i have a ton of people asking me and complaining about battery life.
So i figure i give you guys a small insight on how to properly read your battery stats.
when you are in the battery stas section of your phone.
settings > battery & data manager > battery usage = battery percentage
the screen looks something like this
4h 35m 10s
phone idle 36%
screen 25%
etc etc
when you are looking at this screen, the percentages do not resemble the amount of battery consume. but the amount of time that particular service/status its ran on battery
so no. your phone idle has not consume 68% of your battery
your phone is being idle 68% of the time its been on battery.
so no. your screen did not consume 25% of your battery
your screen is been on 25% of the time your phone is been on battery.
i hope this helps to clear up so of you guyses doubts and concerms about battery life.

so what app would we use to determine how much % of the battery is being used by certain things, like the screen?

I dont understand why its been so hard for people to understand this. Everyone that has been complaining about phone idle using battery has caused my brain to hurt.

Thanks for putting this out there SamCripp, I don't think many people understand this.

Are you sure sam. Numbers don't add up on my phone to support that.
I thought the percentages of each service is what percentage they have used of the total used battery.
Example:
Battery at 80% (20% used)
So if phone idle says 30% I thought that meant it has used 30% of that 20% or approximately 7% of the total battery.
I say this because for example my wifi shows being on the whole time I have been unplugged but its percentage is only 6%.
Sent from my MB860 using XDA Premium App

Anthonok said:
I dont understand why its been so hard for people to understand this. Everyone that has been complaining about phone idle using battery has caused my brain to hurt.
Click to expand...
Click to collapse
I started writing a rebuttal to this, with math and everything, but when I was doing the math, I realized that my battery is in fact working fine. If the phone was idle for four hours, the battery should be around 96 percent, and phone idle will have taken around 100% of the battery usage. Thank you for making me do the work and figure it out. Now, to make sure that this is indeed the case with my battery once I fully charge it and calibrate it.
Sent from my MB860 using XDA Premium App

helifixer said:
Are you sure sam. Numbers don't add up on my phone to support that.
I thought the percentages of each service is what percentage they have used of the total used battery.
Example:
Battery at 80% (20% used)
So if phone idle says 30% I thought that meant it has used 30% of that 20% or approximately 7% of the total battery.
I say this because for example my wifi shows being on the whole time I have been unplugged but its percentage is only 6%.
Sent from my MB860 using XDA Premium App
Click to expand...
Click to collapse
You don't question samcripp.
Sent from my MB860 using XDA App

I'm going to have to question this theory.
I charged my phone yesterday afternoon and left it off the charger overnight so it's been 16 hours since charged. Well, when I check my stats it says "Phone Idle" is 49% and "Display" is 31% but when I click on them the "Phone Idle" says it's been on for 14 hours and the "Display" has been on 2 hours.
So, according to your explanation the "Phone Idle", in theory, should read around 88% and my "Display" should be around 12%.
So to me, the stats are telling you how much of your battery has been consumed by those particular processes/components. Not how much time those processes/components have been on.
samcripp said:
when you are looking at this screen, the percentages do not resemble the amount of battery consume. but the amount of time that particular service/status its ran on battery
so no. your phone idle has not consume 68% of your battery
your phone is being idle 68% of the time its been on battery.
so no. your screen did not consume 25% of your battery
your screen is been on 25% of the time your phone is been on battery.
i hope this helps to clear up so of you guyses doubts and concerms about battery life.
Click to expand...
Click to collapse

I believe Sam is right.
My phone idle is at 54%, with 91% battery left. When I tap on phone idle, it says 2h 35m (when I woke up). For display, at 32%, it says 15m. Android OS is at 2%, and cell standby at 10%.
So I don't see how my phone idle is taking up 54% of my battery.

Deggy said:
You don't question samcripp.
Sent from my MB860 using XDA App
Click to expand...
Click to collapse
If you don't question you don't learn you just become a parrot. I'm sure sam won't be offended.
Sent from my MB860 using XDA Premium App

no its obvious there is battery issues, with reporting correct percentage and all. but this is tutorial on how to read the battery stats section, not on how its correctcly reported
correctly reporting we can fix once theres source!

Sinful Animosity said:
I believe Sam is right.
My phone idle is at 54%, with 91% battery left. When I tap on phone idle, it says 2h 35m (when I woke up). For display, at 32%, it says 15m. Android OS is at 2%, and cell standby at 10%.
So I don't see how my phone idle is taking up 54% of my battery.
Click to expand...
Click to collapse
Lets see:
Sams way - IF phone was idle for 54% of the time since change that would mean the phone has been unplugged for (rough math just woke up) about 5hrs
Therefore for display if it was 32% it should have been on for 32% of 5hrs or about 96min. For 15min it would only be about 5%.
My theory: Display used up 32% of the total 9% of battery that has been used so far or about 3% of the total battery.

i welcome questions and critisims, this is a comunity, is a group effort. the only thing i wont accept is flame and trolling!
and you are right sir im not offended!
helifixer said:
If you don't question you don't learn you just become a parrot. I'm sure sam won't be offended.
Sent from my MB860 using XDA Premium App
Click to expand...
Click to collapse

helifixer said:
Lets see:
Sams way - IF phone was idle for 54% of the time since change that would mean the phone has been unplugged for (rough math just work up) about 5hrs
Therefore for display if it was 32% it should have been on for 32% of 5hrs or about 96min. For 15min it would only be about 5%.
My theory: Display used up 32% of the total 9% of battery that has been used so far or about 3% of the total battery.
Click to expand...
Click to collapse
leds, notifications and all general visual and vound and vibration would account for display. == theory as i dont have the source to confirm.
on programing INPUT is extremly generic. anything from mouse to monitor is in this category. so it only makes sense display would be the engineers way of categorizing!

Sinful Animosity said:
I believe Sam is right.
My phone idle is at 54%, with 91% battery left. When I tap on phone idle, it says 2h 35m (when I woke up). For display, at 32%, it says 15m. Android OS is at 2%, and cell standby at 10%.
So I don't see how my phone idle is taking up 54% of my battery.
Click to expand...
Click to collapse
It's not so hard to understand. The phone already drained 9% of your battery and in that there is 54% of drainage caused by idle, 32% caused by display and so on. You can't say that 2h 35m caused 54% and 15m caused 32%. It's obvious percentage and time aren't connected. I think some ****ty moto-app is running whet phone is idle and that cause short battery life. I had few android phones before and idle was never higher than 20-30%

Utilising the scientific method!
3 days ago i drain my battery clear battery stats charged up to 100% and spend the next days with out recharging once. each time i got to 24 hours i rebooted, so my battery stats would clear in the battery stats section.
my last battery stats
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FOR PEOPLE CURIOUS ON WHAT THEY LOOKED BEFORE THE BATTERY RESET ONLY AFTER 8H BEFORE THE EXPERIMENT TOOK PLACE

przez said:
It's not so hard to understand. The phone already drained 9% of your battery and in that there is 54% of drainage caused by idle, 32% caused by display and so on. You can't say that 2h 35m caused 54% and 15m caused 32%. It's obvious percentage and time aren't connected. I think some ****ty moto-app is running whet phone is idle and that cause short battery life. I had few android phones before and idle was never higher than 20-30%
Click to expand...
Click to collapse
No there is a correlation between percentage and time its all relative to the total battery used:
1 hr unplugged total battery at 90%
-Display on for 20min might be read something like 50% / 20min (50% of 10% of total battery used this far)
-Idle might be 50% / 40min
but if you then just idled the phone for 8 hours new readings would be
Total Battery 60%
Display 15% / but still 20min ( 15% of 40% of total battery used this far)
Idle 85% / 7h 40min (85% of total battery used this far)
-Display
If you add up the numbers they always come up to around 100% (+/- a few percent for rounding errors) if it was app on time then there would be over 100% as we have "multitasking phones" ie display is on but so is my XDA app and irc running in background.

as you can see from my pic above all those times are solid. i used my phone for about 4 hours yesterday, with the hear and there of opening stuff up we can added up to about 5hrs and a few minutes the rest of the time is sit, as i was at work and compiling cm! i do see your math checks. but run the experiment for yourself.

samcripp said:
as you can see from my pic above all those times are solid. i used my phone for about 4 hours yesterday, with the hear and there of opening stuff up we can added up to about 5hrs and a few minutes the rest of the time is sit, as i was at work and compiling cm! i do see your math checks. but run the experiment for yourself.
Click to expand...
Click to collapse
I must be a little slow this morning because I don't understand your experiment or what it has to do with "Reading" the stats. Your pictures don't show any times which is what we are talking about.
We can both agree that people get confused and thing that if there idle says 50% they think it has used 50% of there total battery which is not true.
So the question is simply - does the individual stat for say Display or phone idle represent either:
a) percentage of time since unplugged that app/service has been used/on for or
b) percentage of "total used battery up to that point"
Not sure how your experiment proves or disproves either of the above. Except that again as I said above the percentages add up to 100% +/- so I am not sure how that could be unless its b.

[How To] get 100% charge, overnight, lazily.

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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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

official LG battery drain/degradation

I've had one battery since I bought my phone in August 2015
Over the past few weeks I began noticing much less standby and screen on time as before.....
I looked for any rogue apps that could be causing the drain...
I contemplated whether it was the new v20e and f updates..
I then got two official LG batteries from am Amazon seller for $15 (out it curiosity really)
Any now my battery drain is GONE.
I didn't realize I could have battery degradation so soon.... I've used the official charger for 8 months and a certified Qualcomm quick charger for the last 2 months
Not sure... But possible that I crossed 400 charge cycles on my original battery... As I use it as my primary smartphone and primary camera (mirrorless got relegated to the box)
Maybe the marshmallow battery drain is really decreased battery capacity?
Anyone else experience anything similar?
This also makes me wonder if phones like the Nexus 6p really have a shorter service life than I thought.
I hope LG keeps trying with what is now their exclusive feature of removable batteries. Not too impressed with the friend modules so far.... But I think I'll be buying the lg360 cam asap once it's compatible with my g4.

Same here!
Got the phone on May 2015. Battery life started to get worse with first MM update.
I used to get about 4-5 hours of screen-on time, now I get about 2-3 max.
Sometimes I need to recharge in the middle of the day(never happened before, even with moderately heavy use).
I'll get a new battery as well and post results, thanks for bringing up the issue OP

+1
Envoyé de mon LG-H815 en utilisant Tapatalk

tsimpoyris said:
Same here!
Got the phone on May 2015. Battery life started to get worse with first MM update.
I used to get about 4-5 hours of screen-on time, now I get about 2-3 max.
Sometimes I need to recharge in the middle of the day(never happened before, even with moderately heavy use).
I'll get a new battery as well and post results, thanks for bringing up the issue OP
Click to expand...
Click to collapse
Same situation here. Flashed 5.1, but still have max 3h SOT.

One first charge cycle with new LG battery
Will report back tomorrow maybe
Obvious difference already

GPS seems the issue for me
Battery life was good on lollipop. After the marshmallow update, started having significant drain. Did a factory reset, was slightly better. After analyzing for a bit, noticed massive GPS use, mostly in play services. Turned off location, and now use it only as needed. Giant increase in battery life.
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I have no real battery issues with MM v20d, still on the original battery from June 2015.
Had the bootloop so MB replaced 506-->601.
After flashing v20f I started to experience battery drain (Android-system), it was caused by my Fitbit charge hr bluetooth connection.
Turning off bluetooth and only turning it on when I want to sync my Fitbit stopped the Android-system wakelocks.

novastar1 said:
One first charge cycle with new LG battery
Will report back tomorrow maybe
Obvious difference already
Click to expand...
Click to collapse
Results? [emoji2] I have just received my new LG battery and almost done with the first charging cycle. I will report after few days.

dedovec said:
Results? [emoji2] I have just received my new LG battery and almost done with the first charging cycle. I will report after few days.
Click to expand...
Click to collapse
Yes
Back to 1% drain on wifi overnight
And 4 hrs sot
I could see the battery percentage drop every few minutes of screen on with the original battery
So more that worth the $16 I paid for 2 new batteries
I really wasn't expecting to see a difference as my initial battery is now 10 months old

novastar1 said:
Not sure... But possible that I crossed 400 charge cycles on my original battery... As I use it as my primary smartphone and primary camera (mirrorless got relegated to the box)
Click to expand...
Click to collapse
Depends at which point you recharge.
ideally up to 90, back on at 40. Trying not to go below. With my 3+ yr old tab tab i've mostly followed that regime now and still can get almost 8h sot. 1500 cycles possible.
if you charge to 100 and then again at 5 & 10. Those are deep discharges which will decrease battery life sooner so around 300-500 cycles you see less battery life. (see table 2)
hey, it just might not be possible to do the former and this is why replaceable batteries are best.
This also makes me wonder if phones like the Nexus 6p really have a shorter service life than I thought.
Click to expand...
Click to collapse
There is a catch here, the 6P isn't the easiest of devices to service. it gets a ifixit score of 2 (!). So a battery replacement is going to be involved and cost appropriately.
I hope LG keeps trying with what is now their exclusive feature of removable batteries.
Click to expand...
Click to collapse
Definitely and the problem gets exacerbated with quick charge. Quick charge isn't good for batteries but everybody loves it.
QC 2 tries to get as much charge as it can up to a certain point then tapers off. Its more stressful than QC3 which tries to get as much as the phone will allow.Subtle difference.
It's possible with quick, fast, turbo whatever charge that people will require to change batteries sooner than in the past.

Just update to MM yesterday. My phone is just 2 days old so I have nothing weird to report about battery. Last night, I left my phone at 40%, after 5 hours of sleep, my batt is at 39%. So I guess this is a pretty good one. I also play games for 20 minutes and got 5% drain only.

Usually the battery drain after updating to mm is caused by fast dormancy.
U have to disable it.
Go to the hidden menu, type *#546368#*815# (replace 815 with ur model number, so 812 if u have the 812 model etc)
Then go to field test>Modem settings>PDP setting>0 and sellect fast dormancy off.
Reboot phone and you should be fine
This worked for me, try before u buy a new battery

Definitely we talking about battery degradation. Same usage, same condition, disabled MLT, Fast dormancy, etc etc etc... I am not new in Android world and LG phones. This is the result after first charging of my new battery. That was impossible with the old one. Result was 3h SOT and only 15% to 20% battery left on LP with the old battery. Now i have 3h 40 min SOT and 44% battery left. Usually i have 25 to 30 min SOT from 100% to 90%. Today from 100% to 90%= 1h 12 min SOT. If this is not improvement and proof for battery degradation...
PS: This is close or equal to my initial result, when the phone was new.

Could you send me a link to that battery that you have ordered?
Sent from my LG-H815 using Tapatalk

This is original LG battery, which i bought from the store of the official LG importer in my country and unfortunately i can't provide you a link. I presume that on Ebay you can find original battery and may be cheaper than mine (25€).

G4 dual models are better than others i think , i usually get 4:30 hours SOT with wifi on and sync and one day standby on my H818N dual sim model.

This is the final result with the new battery after one charging cycle. Considering my usage and my results with the old battery, i am absolutely glad from my purchase.

dedovec said:
This is the final result with the new battery after one charging cycle. Considering my usage and my results with the old battery, i am absolutely glad from my purchase.
Click to expand...
Click to collapse
Same here.
But do you happen to use a quick charger?
I used a quick charger for only 2 out of the 10 months that I had mine.... I'd like to think the quick degradation isn't due to that

imarcel99 said:
Could you send me a link to that battery that you have ordered?
Sent from my LG-H815 using Tapatalk
Click to expand...
Click to collapse
I got mine from "gadgets and supplies" on Amazon

novastar1 said:
Same here.
But do you happen to use a quick charger?
I used a quick charger for only 2 out of the 10 months that I had mine.... I'd like to think the quick degradation isn't due to that
Click to expand...
Click to collapse
I didn't use a quick charger even a single time, only charger from the box of the phone.
Overall... My device have two super weak spots: bootloop problem from the last week, and battery that lasts only 10 months...
Oh, and image retention/ burn in/ bla bla display...
D*mn, my experience with this phone it's not so good... [emoji1] [emoji1] [emoji1]

CyanogenMod 13 (Santhosh) - Low Battery Life

I was hoping that flashing this ROM would solve the only problem I had with AOSP 5.1 which was bad battery life (around 5h SOT) compared to the most of other people (8-10h SOT) and sadly it didn't. I'm getting even less on CM13 while I see other people also with insane battery life at almost 10h SOT while I get less than half of that.
Can someone help me out in this matter?
Yesterday I was at 32% battery left, 2h 40min SOT.
I have LTE and mobile data always on, a geolocated weather widget (Chronus) refreshing every 60 min, ambient display off.
I have xposed installed with the following modules:
- Amplify
- Greenify (haven't selected any apps, only working on boost mode, not sure if it still works like this)
- YouTube AdAway
Potential battery affecting apps:
- AdAway
- AppSales
- Chronus
- Disa
- Facebook
- Instagram
- Forza
- Twitter
- WhatsApp
- XDA Labs
I'm using BetterBatteryStats to track out what's going::
on Kernel Wakelock:
- PowerManagerService.WakeLocks - 9%
- event0 - 5%
- event2 - 5%
- event3 - 5%
- event6 - 5%
- [timerfd] - 5%
- ipc00000165_FLP Service Cal - 4%
- qseecom_ws - 2%
- IPA_WS - 1%
- alarmtimer - 1%
- [timerfd] - 1%
From here down everything's at 0%.
on Partial Wakelocks everything's at 0%.
The CPU has spent most of the time on Deep Sleep (78% - 9h)
Today I uninstalled Greenify and Amplify, tweaked some settings on the Facebook app, removed my weather widget and change location not to use as much battery.
I'm now at 70% battery life remaining, 1h15min SOT, the phone has been on for 9h40min. The kernel wakelocks are pretty much the same as the ones of yesterday.
I'm sorry for the wall of text but at this point I'm really desperate cause I really want to be least a bit closer to the battery life most people are getting. Thank you for your patience.

Discharge your phone until it shuts down totally then make a full 100% charge without touching the phone . Also tell me exactly how much time it took (in minutes) and the charge rate of your charger. Once it's done make a battery calibration, saw somewhere in commits of cm13 that for some cases it could recognize battery only as 2000mah

aaz03 said:
Discharge your phone until it shuts down totally then make a full 100% charge without touching the phone . Also tell me exactly how much time it took (in minutes) and the charge rate of your charger. Once it's done make a battery calibration, saw somewhere in commits of cm13 that for some cases it could recognize battery only as 2000mah
Click to expand...
Click to collapse
No, it would kill the Battery Cell (Lithium): www.batteryuniversity.com
Sent from my Redmi Note 3 using XDA-Developers mobile app

aaz03 said:
Discharge your phone until it shuts down totally then make a full 100% charge without touching the phone . Also tell me exactly how much time it took (in minutes) and the charge rate of your charger. Once it's done make a battery calibration, saw somewhere in commits of cm13 that for some cases it could recognize battery only as 2000mah
Click to expand...
Click to collapse
It only displays as 2000mah, in reality battery capacity is 4000mah indeed
MOVZX said:
No, it would kill the Battery Cell (Lithium): www.batteryuniversity.com
Sent from my Redmi Note 3 using XDA-Developers mobile app
Click to expand...
Click to collapse
No it won't.
Its the best thing to do, everytime you upgrade your device to a new rom

MOVZX said:
No, it would kill the Battery Cell (Lithium): www.batteryuniversity.com
Sent from my Redmi Note 3 using XDA-Developers mobile app
Click to expand...
Click to collapse
Electric lesson today : yes it could kill a cell but only if this cell is already at the end of his timelife (after 2-3years maybe) or if the discharge level is too low , the ultimate limit of a lithium cell is around 2.6-2.7v , if you go under that the cell may not be able to recharge at all , it's true but when you are a mobile device builder you can't let this happen just because someone forgot to charge his phone , that's why you have a security margin of a few percent even when the mobile isn't able to boot. A phone usually goes from 2.9-3v to 4.2v range when fully charged. The "no big charge cycle" legend is only there because the battery have a better efficiency around his nominal voltage (3.7v) so your battery Will last longer (talking about number of cycles not battery time) when maintained around this voltage

aaz03 said:
Electric lesson today : yes it could kill a cell but only if this cell is already at the end of his timelife (after 2-3years maybe) or if the discharge level is too low , the ultimate limit of a lithium cell is around 2.6-2.7v , if you go under that the cell may not be able to recharge at all , it's true but when you are a mobile device builder you can't let this happen just because someone forgot to charge his phone , that's why you have a security margin of a few percent even when the mobile isn't able to boot. A phone usually goes from 2.9-3v to 4.2v range when fully charged. The "no big charge cycle" legend is only there because the battery have a better efficiency around his nominal voltage (3.7v) so your battery Will last longer (talking about number of cycles not battery time) when maintained around this voltage
Click to expand...
Click to collapse
I have done this procedure with my old nexus 4 several times and it's the original battery.

I got the same problem.
Now, I am running Temasek CM13, and I saw battery was going pretty bad...
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It is in Spanish, but is understable.
Any solution?
Regards!!

miguelang611 said:
I got the same problem.
Now, I am running Temasek CM13, and I saw battery was going pretty bad...
It is in Spanish, but is understable.
Any solution?
Regards!!
Click to expand...
Click to collapse
Report this screenshot in temasek and santo's build , it's just a fault in source where the device is supposed to have 2000mah only

H
Enviado desde mi Redmi Note 3 mediante Tapatalk

aaz03 said:
Electric lesson today : yes it could kill a cell but only if this cell is already at the end of his timelife (after 2-3years maybe) or if the discharge level is too low , the ultimate limit of a lithium cell is around 2.6-2.7v , if you go under that the cell may not be able to recharge at all , it's true but when you are a mobile device builder you can't let this happen just because someone forgot to charge his phone , that's why you have a security margin of a few percent even when the mobile isn't able to boot. A phone usually goes from 2.9-3v to 4.2v range when fully charged. The "no big charge cycle" legend is only there because the battery have a better efficiency around his nominal voltage (3.7v) so your battery Will last longer (talking about number of cycles not battery time) when maintained around this voltage
Click to expand...
Click to collapse
You truly underestimate modern electronics..
AFAIK, All Lithium-ion / Li-Po Batteries in smartphones and tablets and every other electronic gadget has an overcurrent protection and low voltage protection circuit.
And please dont act like a know it all..