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[Q] My new, stock Charge is getting ~6 hour battery life.

I've installed the Yelp, Movies, and Amazon app, nothing else, and I'm losing around 15% an hour with light/normal usage.
I've let the battery run down to 0 and recharged completely, I've turned off gps and wifi, and still get really bad life. I live in the Bay Area and get a solid signal all of the time. There's really no excuse for it.
Please don't tell me to flash to a rom, because that's obviously not fixing the issue. Light browsing and the occasional Google Maps has my phone at <20% by the afternoon.
Battery stats just show android system and screen brightness taking up power. What's the deal?

I also constantly have at least 255 / 328mb in use even with all applications closed.
Sent from my SCH-I510 using XDA App

The mb usage is normal i noticed this on stock because of Verizon apps that run in background. As far as not using the phone and only getting 6 good hours of use. i would take to the store and ask if they could change out the battery. Hope this helps.

+1 for that, sounds like you have a defective battery.
Sent from my Droid Charge

Thats about how long my battery gets me.
And if I forget to power down my phone at night, or put it on a charger it is dead by morning no matter how much of a charge it has before I go to bed.
I have an extended battery starring me in the face and can't use it yet since I couldn't find a door and had to have one shipped from Samsung.
Hopefully the extended battery cures my issues.
(I am running Gummy Charged 2.3.3 Beta, currently waiting for the 2.3.4 release)

Abradax said:
Thats about how long my battery gets me.
And if I forget to power down my phone at night, or put it on a charger it is dead by morning no matter how much of a charge it has before I go to bed.
I have an extended battery starring me in the face and can't use it yet since I couldn't find a door and had to have one shipped from Samsung.
Hopefully the extended battery cures my issues.
(I am running Gummy Charged 2.3.3 Beta, currently waiting for the 2.3.4 release)
Click to expand...
Click to collapse
I am curious as to what you guys are running. And if you go to bed with your phone on , and its dead by morning I can PROMISE you there is either something going on with your phone, or you are doing something wrong (i.e. you have your phone set to never sleep, your screen is set to maximum brightness, your are leaving your phone in desk cradle mode, etc etc etc.) But it's not the phone. May be a bad battery, but without being at your house and seeing what you are doing, I have no intelligent answer for you.

dragonstalker said:
I am curious as to what you guys are running. And if you go to bed with your phone on , and its dead by morning I can PROMISE you there is either something going on with your phone, or you are doing something wrong (i.e. you have your phone set to never sleep, your screen is set to maximum brightness, your are leaving your phone in desk cradle mode, etc etc etc.) But it's not the phone. May be a bad battery, but without being at your house and seeing what you are doing, I have no intelligent answer for you.
Click to expand...
Click to collapse
charge phone to 100%, boot into clockwork recovery and wipe your battery stats, then use the phone until you completely drain your battery until it shuts off. Then charge back up completely. This will calibrate your battery. try running a customer rom such as gummy charged or humble to see if you get bettery battery life... thousands of users have reported great battery life with both

I had same crummy battery life. I followed the calibration instructions and i went from about 5-6 hr batt life to ( right now im at almost 11hrs with 66% battery left on wifi with moderate use). Ill test tomorrow on 4g only and see how it does. I would get like 4-5 hrs before.
Sent from my LG-P920 using XDA App

danalo1979 said:
charge phone to 100%, boot into clockwork recovery and wipe your battery stats, then use the phone until you completely drain your battery until it shuts off. Then charge back up completely. This will calibrate your battery. try running a customer rom such as gummy charged or humble to see if you get bettery battery life... thousands of users have reported great battery life with both
Click to expand...
Click to collapse
I am running the latest humble and my battery drops really fast. If I go into task manager and clear my RAM, I get better battery. I calibrated per the instructions as well about a week ago or so and saw no improvement. Please note that I have not been scientific about it at all.
Stopping Data obv helps a million and clearing RAM seems to help as well.
EDIT: I am recalibrating in case it was not done properly before. Hopefully it will help. I am hopeful!

I charged my battery to full, booted into clockwork recovery and wiped my battery stats.
When I rebooted my phone it shows a 73% charge?

Abradax said:
I charged my battery to full, booted into clockwork recovery and wiped my battery stats.
When I rebooted my phone it shows a 73% charge?
Click to expand...
Click to collapse
If you are on humble 1.x then that means your battery stats were way off. Basically your battery still needs 23% more charge before its full... thus better battery life... because you had a miscalibrated battery, your phone is erroneously reporting a full charge... charge it back to 100% then discharge fully then charge all the back up
Sent from my SCH-I510 using XDA Premium App

I'm on Gummy Charge GRE, but I assume the same reason?

I exchanged my battery at verizon. So far it seems better. Ive let it drain and am recharging now. I will also try uninstalling g+ if the new batt hasnt solved the problem. I will post back with an update.
Sent from my SCH-I510 using XDA App

I switched out my battery 2 days ago, and I'm still getting under 6 hours with moderate use.
Has anyone had luck with ROMs drastically improving battery life? I can't imagine it being the phone itself, but I might try exchanging it too.
EDIT: it seems like the new battery charges a bit faster. My old battery would take around a minute for one percentage gain. Can anyone comment on their charge times?

[Q] Battery Calibration

I read a lot of thread about battery calibration so I want to know if someone try this on XT720 and if it's really usefull and not dangerous for the phone.
Thank you

It is useful and not dangerous at all. Your battery has, if stock that came with phone, a full charge of 4.2v.
So let's say that you have been conservatively using you phone most of the day and are at 70%. You decide to flash the Hellmonger edition or CM6 but you make a nandroid backup first. You flash them and it goes horribly wrong and your phone power dwindles down to 30% and you freakout and charge it back up.
When it is charging, you decide to hold off on flashing for a bit and want to go back to your "home" ROM, whatever that may be. You let your phone charge up to 100% and re-flash your back up. Once it reboots and settles down, you happen to notice that just 5 mins ago you were at 100%, but now after flashing your backup, your battery shows 70%.
30% drop in 5 mins is rediculous. Yes it is, bit it didn't really drop 30% in 5 mins because when you backed up your original ROM, you also backed up your data/system/batterystats.bin that was calibrated to 70%.
If you use Battery Calibrator and charge it up fully, run app, hit it and then unplug, it deletes the data/system/batterystats.bin and in a few seconds (5 ithink) it creates a new one with you proper charge and voltz.
So if you flash a lot, this is good for you. Or you can delete the batterystats.bin manually if you want, but there's an app for that.

Woodrube said:
It is useful and not dangerous at all. Your battery has, if stock that came with phone, a full charge of 4.2v.
So let's say that you have been conservatively using you phone most of the day and are at 70%. You decide to flash the Hellmonger edition or CM6 but you make a nandroid backup first. You flash them and it goes horribly wrong and your phone power dwindles down to 30% and you freakout and charge it back up.
When it is charging, you decide to hold off on flashing for a bit and want to go back to your "home" ROM, whatever that may be. You let your phone charge up to 100% and re-flash your back up. Once it reboots and settles down, you happen to notice that just 5 mins ago you were at 100%, but now after flashing your backup, your battery shows 70%.
30% drop in 5 mins is rediculous. Yes it is, bit it didn't really drop 30% in 5 mins because when you backed up your original ROM, you also backed up your data/system/batterystats.bin that was calibrated to 70%.
If you use Battery Calibrator and charge it up fully, run app, hit it and then unplug, it deletes the data/system/batterystats.bin and in a few seconds (5 ithink) it creates a new one with you proper charge and voltz.
So if you flash a lot, this is good for you. Or you can delete the batterystats.bin manually if you want, but there's an app for that.
Click to expand...
Click to collapse
So, if I understand, it's not so usefull because after I lose my 30%, if I charge and I have 100% it's really 100% not 70% right ?

I would say that it is always best to start from a clean slate. It deletes that batstat file and starts anew. Can't hurt, but if you are flashing ROMs every 3rd day like most of us, it does come in handy.
For the moral of the stroy, it will not damage your phone. Just a one click app that you can do manually with Root Explorer if you wanted to.

Woodrube said:
I would say that it is always best to start from a clean slate. It deletes that batstat file and starts anew. Can't hurt, but if you are flashing ROMs every 3rd day like most of us, it does come in handy.
For the moral of the stroy, it will not damage your phone. Just a one click app that you can do manually with Root Explorer if you wanted to.
Click to expand...
Click to collapse
Ok, thank you, I will use it when I will flash a new ROM.

Do you actually have to drain the battery fully after calibration?
Sent from my MilestoneXT720 using XDA App

eejin2 said:
Do you actually have to drain the battery fully after calibration?
Sent from my MilestoneXT720 using XDA App
Click to expand...
Click to collapse
Its recommended that the battery drain fully, and then be recharged without interruption. I guess thats to give android a full scale from full to empty, to help better report battery stats and consumption.
However for me full drain means 10-15%, its hurts the battery to be drained till the phone powers off.

sohrab.naushad said:
Its recommended that the battery drain fully, and then be recharged without interruption. I guess thats to give android a full scale from full to empty, to help better report battery stats and consumption.
However for me full drain means 10-15%, its hurts the battery to be drained till the phone powers off.
Click to expand...
Click to collapse
Haha battery calibration definatly helps the battery a lot but u suggest not draining battery fully??

androidlover123 said:
Haha battery calibration definatly helps the battery a lot but u suggest not draining battery fully??
Click to expand...
Click to collapse
I used to drain it fully till my phone turned off before calibration but I read a very detailed article about how draining the battery completely can hurt it. So I choose to drain it till 5-10% which is good enough

How come sometimes when the battery is full it shows 4200mah like it should but sometimes it shows less like around 4165mah in the battery calibration app? At 4165, I still left it there to charge to see if it would increase or not but it didn't...
Sent from my MilestoneXT720 using XDA App

I know that the last little bit of charge just trickles in and takes a long time. If mine is at somewhere between 4150 and 4200, i call it good and go from there. If it was showing at say 4095 and 100%, then there might be something wrong with either the data or the battery. If you are sitting at 4165, then it is charged for the most part.
The app and what it does is more for when you are flashing a ROM and have around 60% and then once booted up fully, you charge it up to 100%. Decided you don't like your ROM and go back to your original ROM via backup, it will show 60% instead of the 100 or 90% you had before you went back to back up b/c you backed up the batstat bin when you nandroided your original ROM.
How about this:
ROM: Epicsteelblue 70% (and you made a backup) Then went to CM6, charged and hit calibrate battery at 100%. Used CM6 for a few hours and decided it wasn't your bag. Your batter is at 50%. You flash back to your Epicbluesteel ROM and you know for a fact you had 50% before you flashed back, but now once totally booted, you are showing 70%. This is why you use the battery calibrator after you flash a ROM. Gotta create a new batstat bin for you "fresh" ROM (even though it is a backup).
Hope this helps explain better.

eejin2 said:
How come sometimes when the battery is full it shows 4200mah like it should but sometimes it shows less like around 4165mah in the battery calibration app? At 4165, I still left it there to charge to see if it would increase or not but it didn't...
Sent from my MilestoneXT720 using XDA App
Click to expand...
Click to collapse
That happens sometimes to me aswell. The battery calibration app shows the battery full at 4165 or somewhere in that range. What I do with that is bump charge it. So if battery calibration shows 4165, i just calibrate it and turn the phone off while it is connected to the charger. When it turns off the charging screen appears and shows 100%, i leave it there for an hour or two. Then remove and turn the phone on. If you go into the battery information itll show the charge to be 4200 or close to that. Hope that was helpful you can try it next time.
EDIT: The reason I turn the phone off and let is charge is that when it reboots after fully charging to 4200 it can create a fresh battery stats. Remember battery stats are only rebuilt upon boot. If you calibrate your battery and then dont reboot its useless. To test calibrate it, and then use it for awhile and then try to recalibrate it the app will indicate that there are no battery stats avaible to delete. This is because the ROM has not made any new battery stats and will only make them on boot.

hey guys has anyone tried this method (http://forum.xda-developers.com/showpost.php?p=11803458&postcount=10) of calibrating battery? it seems the dev says that if u use his method, you can calibrate without downtime!!

wow this is damn cool. but its kinda complicated. the old way feels better for me i think...

Battery Updates
The battery updates every 10%, is there any way to make it update more precisely, like every 5%?

I've never been able to get anything better that 10% battery increments

Okay thanks maybe in a future rom this would be nice.

Hi
Is their a way to change from 10% to 1% increameants.
Sent from my XT720 using xda premium

eejin2 said:
How come sometimes when the battery is full it shows 4200mah like it should but sometimes it shows less like around 4165mah in the battery calibration app? At 4165, I still left it there to charge to see if it would increase or not but it didn't...
Sent from my MilestoneXT720 using XDA App
Click to expand...
Click to collapse
It is the property of all rechargetable battery, 4.2V can only see at the moment charging progress just finished. when the power management IC pull of charge current, battery's voltage will drop a litte in a very short time, like you said, 4.165V for example. And, because of your charger is connected, battery will not drain, It won't be another charging progress witch you are expecting.

I know I'm digging up an old thread here, so sorry for that. I've recently tried a few other ROMs, but since have come back to CM6.3.7. I always do the battery calibration thing when I flash ROMs and each time I've tried it lately, it gives me odd information in the Battery Usage screen. I charged my phone to 100% yesterday before leaving work and when I got to work today, it showed 70%, which seemed normal, but the Battery Usage screen showed "1h 24m since last unplugged" and I know I hadn't plugged it into the wall or USB for about 12 hours. I did restart once....could that be the reason why the time since last unplugged is incorrect?

Bad Battery? Or just stats?

So this has happened twice now. I'm running on ARHD 4.1.0 w/ Bricked 1.0.
My battery will be running normally, normal drainage, etc., and then it'll just drop from 90 to 70% in less than an hour, and normally drain for another hour or so, and then at around 60% just die. I can't attach a screenshot since normal screenshot apps aren't working and the stock function keeps producing invalid images, otherwise I would, but it literally just looks like it got to 60% and instantly dropped to 0%, there's just a vertical line of missing percentage. I took my phone out of my pocket, expecting it to be around 40 or 50%, and it wouldn't turn on. When I hooked it up to the charger, it took a good 5 or more minutes to even respond to the power button. Do I have a bad battery or just incredibly out of whack battery stats? I have never had this problem with an android phone before, and I thought for sure one full charge overnight would fix it, but I guess not because it happened twice. Any suggestions?
Edit: I use an app called battery snap to monitor the battery level and temperature with a widget, I checked a snapshot history while it was charging and for a few seconds it was at 0.002 volts. But then it jumped back up to 3.897 or something around there. That doesn't sound very good to me.

MusicMan374 said:
So this has happened twice now. I'm running on ARHD 4.1.0 w/ Bricked 1.0.
My battery will be running normally, normal drainage, etc., and then it'll just drop from 90 to 70% in less than an hour, and normally drain for another hour or so, and then at around 60% just die. I can't attach a screenshot since normal screenshot apps aren't working and the stock function keeps producing invalid images, otherwise I would, but it literally just looks like it got to 60% and instantly dropped to 0%, there's just a vertical line of missing percentage. I took my phone out of my pocket, expecting it to be around 40 or 50%, and it wouldn't turn on. When I hooked it up to the charger, it took a good 5 or more minutes to even respond to the power button. Do I have a bad battery or just incredibly out of whack battery stats? I have never had this problem with an android phone before, and I thought for sure one full charge overnight would fix it, but I guess not because it happened twice. Any suggestions?
Edit: I use an app called battery snap to monitor the battery level and temperature with a widget, I checked a snapshot history while it was charging and for a few seconds it was at 0.002 volts. But then it jumped back up to 3.897 or something around there. That doesn't sound very good to me.
Click to expand...
Click to collapse
I don't know much about this, but I don't think battery stats have anything to do while the phone is dead. Even if it does, the phone would at least respond after a minute or two, not 5..
My suggestion is that you can order an Anker battery which is kinda cheap ($15 I think) and try.
You won't loose anything
Edit: Try wiping battery stats, do a full charge, fully discharge and fully recharge again and see if it helps (In your case I don't think this will help, but huh, let's hope ;D)
Sent from my HTC Sensation Z710e

claudenegm said:
I don't know much about this, but I don't think battery stats have anything to do while the phone is dead. Even if it does, the phone would at least respond after a minute or two, not 5..
My suggestion is that you can order an Anker battery which is kinda cheap ($15 I think) and try.
You won't loose anything
Edit: Try wiping battery stats, do a full charge, fully discharge and fully recharge again and see if it helps (In your case I don't think this will help, but huh, let's hope ;D)
Sent from my HTC Sensation Z710e
Click to expand...
Click to collapse
Thanks, I'll try it. I flashed the new cm7, since I just got tired of sense woes. I read battery life on this was amazing, and I'm hoping it was just a bug with the kernel/rom I was using. Battery stats would've been wiped when I wiped for flashing this ROM, so I'll do a full battery cycle and cross my fingers. My only thought is that maybe, if the battery stats were screwed up enough, it thought it was at 50 or 60% but really it was more like 10%. I remember having issues after I flashed the custom kernel, where before I flashed I was at 70%, and when I rebooted I was at ~10%, and I was like what the hell? So it ended up dying on me, but then I turned it back on and it said 50% or something around there. And then it functioned as normal until it died again, for real that time. Hopefully it was the kernel causing the issue. I'll run a few tests with this and see. If it is the battery, I'll try t-mobile for a warranty replacement of the battery.

The battery measurements seem to be really quirky on this phone. When the phone is idle it seems to drain anything from 50ma to 400ma for no particular reason. You cant really rely on the % too closely

Yeah, I've found the percentages to be pretty inaccurate. Hardly an hour and a half on the battery and it's down to 84%. I did play a game for like 10 minutes and the screen has probably been on for 20 or so, so that's not incredibly unreasonable. I'm just waiting for that dropoff to 0%, if that happens again I'm thinking it's hardware, because I'm running an entirely different ROM and kernel right now.

So it just happened again, went from 42 to 14 after reboot, had to remove battery and reinsert to fix. But other people have reported this issue on cm7. So, I'm thinking maybe that it's an issue with android 2.3.5 or the kernel for it, since it's happened on both arhd 4.1 and cm7, both 2.3.5 roms. I'm going to try and flash faux's cm7 kernel over it and see if it fixes it. May or may not, might be a long shot but worth a shot, I'd rather not switch roms for a third time in the same day.

[Q] Power Issue.. Please Help!

Hi all,
There's this problem with my phone that everytime I charge it, it takes an elongated time to do so. This issue first emerged when I was on stock GB after a minor OTA update which added the power saver toggle to the quick settings menu..The problem is that it takes about 4-5 hours to fully charge the phone, and if I rebooted in the middle of charging when it's about 70% or 80%, it suddenly shows that the phone is fully charged, and the indicator becomes green! But afterwards the battery drains as quickly!
Now I have S-Off and using ARHD 6.6.3 ROM, but it seems the problem persists ..I wiped battery stats as soon as I flashed the ROM as well..Although it's not a problem I cannot live with, it's annoying enough when it happens.
Can someone please help me? And suggest me what to do?

Prabash said:
Hi all,
There's this problem with my phone that everytime I charge it, it takes an elongated time to do so. This issue first emerged when I was on stock GB after a minor OTA update which added the power saver toggle to the quick settings menu..The problem is that it takes about 4-5 hours to fully charge the phone, and if I rebooted in the middle of charging when it's about 70% or 80%, it suddenly shows that the phone is fully charged, and the indicator becomes green! But afterwards the battery drains as quickly!
Now I have S-Off and using ARHD 6.6.3 ROM, but it seems the problem persists ..I wiped battery stats as soon as I flashed the ROM as well..Although it's not a problem I cannot live with, it's annoying enough when it happens.
Can someone please help me? And suggest me what to do?
Click to expand...
Click to collapse
its common thing...the battery calibration is not proper that's all...
also you need to wipe stats once you charge your phone to 100%
then battery will try to calibrate ...and after 3-4 full complete cycles (100-0 and 0-100)
the battery will settle..
the battery drain will be there ...whenever you flash a rom or flash a kernel....battery only settles atleast after 2 full cycles
EDIT: also download currentwidget from market..as the name says its a widget..so you will see it in widgets once you installed it...this will give you more proper reading of battery...when you plug your phone to charge...and when current widget reads 0mah then your battery is charged completely...(it might take a long time to read 0mah...but charge it until you see 0mah)..then wipe the battery stats...so after this battery calibration will be proper
Also the sudden jump of battery percentage is due to improper battery calibration
so dont worry you got no problem

So
I read somewhere that you are not supposed to let the phone go to zero because it could cause your phone to not power back on anymore..is this fact. I couldn't find where I read it to back and read again. Mine has been doing some weird things as well...the led turns green before it is 100% and it goes from 100% and drops to like 89% out of no where.

toreone said:
I read somewhere that you are not supposed to let the phone go to zero because it could cause your phone to not power back on anymore..is this fact. I couldn't find where I read it to back and read again. Mine has been doing some weird things as well...the led turns green before it is 100% and it goes from 100% and drops to like 89% out of no where.
Click to expand...
Click to collapse
when i meant 100%-0% means until your phone turns off due to less power..it might not(or won't be) be 0% then
as i told you that kind of jumps are common ...in my case it went to 60% to 100% when i rebooted ...also the dropping used to be in large scale too

ganeshp said:
its common thing...the battery calibration is not proper that's all...
also you need to wipe stats once you charge your phone to 100%
then battery will try to calibrate ...and after 3-4 full complete cycles (100-0 and 0-100)
the battery will settle..
the battery drain will be there ...whenever you flash a rom or flash a kernel....battery only settles atleast after 2 full cycles
Click to expand...
Click to collapse
Thanks mate! I will try this out! cheers!

Strange battery stats.

Hi, my phone battery keeps messing up. I have done a battery calibration but it still seems to mess up.
The main problem is that the battery runs out, 10 mins later I have like 3 percent battery, then that runs out so I start to charge it, it charges up to around 20 percent then it jumps to around 60 percent.
By the way I have terrible battery life too - maybe 1 to 2 hours of use before running out.
Edit - I didn't say this but I am on albinoman887's cm10.1 rom.

hellfire191 said:
Hi, my phone battery keeps messing up. I have done a battery calibration but it still seems to mess up.
The main problem is that the battery runs out, 10 mins later I have like 3 percent battery, then that runs out so I start to charge it, it charges up to around 20 percent then it jumps to around 60 percent.
By the way I have terrible battery life too - maybe 1 to 2 hours of use before running out.
Edit - I didn't say this but I am on albinoman887's cm10.1 rom.
Click to expand...
Click to collapse
I'm facing a similar issue, and changing Kernels doesn't seem to help either.
Things have gotten slightly better now in today's build. If updating doesn't help then you should try staying in an older build, the last where the issue was not present.

I don't think its the ROM's issue. Even by itself, after reboot I gain a few % of battery but those deplete quickly.
And then while charging. I restart, from 20% to 60% is possible too. So its not recommended restarting while charging.
Full charge then calculate drain pattern.

I have similar problems. My phone also shuts down very often. When I turn it on again it shows strange readings like 0%, 11% etc. If I reboot my phone it might either stick with the percentage it showed before, not boot at all, or jump back to 80% or so. However, it never takes long before it shuts down again. Even happens sometimes when using my charger...
Chances of my phone shutting down instantly are nearly at a 100% when using the flash while taking a picture.
I don't know what to think in terms of whether or not this is a software or hardware issue as many other people have similar problems, all on different roms and kernels.
Currently I am on:
Firmware build: 3.33
Kernel: Sultan Kernel r21
Rom: JBMIUIv4.1 #3.3.1

about battery percentange when chraging it's a commonn htc issue
i have the same too
no one has found a solution for it yet

Do you all get bad battery life too? Because I don't seem to get a very long battery life.

hellfire191 said:
Do you all get bad battery life too? Because I don't seem to get a very long battery life.
Click to expand...
Click to collapse
No. The battery life on Albino's builds has been nothing short of fantastic for most. You might consider replacing your battery if it's the original stock one. It's bound to be wearing out by now.

I have just bought an anker battery so I will see how it fairs vs he original battery.

R: Strange battery stats.
I believe its something that occasionally happens when u change a rom and kernel. I remember theres somewhere where u can reset battery stats....i think in clockwork...
Sent from my GT-I9300 using xda app-developers app

hellfire191 said:
I have just bought an anker battery so I will see how it fairs vs he original battery.
Click to expand...
Click to collapse
In fact, kernel and ROM do affect battery life, search for what fits your cell phone the best.
I get amazing battery life on ViperS 1.6.3 and the latest Faux + Yank555's kernel besides TurboBoost MOD... These can make up a great combination
------------------------------------------------
That pretty "thanks" button's waiting for U, in case I helped
Sent from a shaken up HTC Sensation XE using... Whatever! Differs?!

R: Strange battery stats.
I dont think they affected the rom so much as to ruin the battery or drain it faster. Charge the battery and reset stats 90% i bet it works.
Sent from my GT-I9300 using xda app-developers app

I have had this problem through numerous roms so i have put it down to the phone and not the software.

R: Strange battery stats.
It can happen at any point if u ever flashed a not-so-secure or old rom.
Once the battery percentages, for any reason, get corrupted, theyre gonna stick to being corrupted no matter how many flashes u try.
Really its not that difficult u just have to press a button (i believe, as i said, in clockwork but im not sure) and all that will happen is when phone reboots battery will get reanalyzed and resynced, nothing else gets modified. might save ur day.
Sent from my GT-I9300 using xda app-developers app

I do this every time I flash a new rom anyway, but thanks for the suggestion.
Sent from my HTC Sensation using xda app-developers app

Does it still happen with the Anker?

killbubble said:
It can happen at any point if u ever flashed a not-so-secure or old rom.
Once the battery percentages, for any reason, get corrupted, theyre gonna stick to being corrupted no matter how many flashes u try.
Really its not that difficult u just have to press a button (i believe, as i said, in clockwork but im not sure) and all that will happen is when phone reboots battery will get reanalyzed and resynced, nothing else gets modified. might save ur day.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
You are describing 'battery calibration'. Its complete urban legend hogwash. It does absolutely nothing.
Wiping the battery stats has no effect whatsoever on battery performance. Those stats get wiped every time you charge the phone to 100%.
However, you can improve the battery reporting by charging to 100%, then draining all the way to 0%, then charging all the way back to 100% again without rebooting (other than after it shuts off at 0%). This is not calibration. Its just running the battery through a full charge and discharge cycle. This helps to stabilize how the draining is reported. It does nothing to actually make the battery last longer.
Sent from my GT-P5110 using xda app-developers app

Then please explain how I can drain my battery to 0% if my phone shuts off every minute. As long as I keep the charger plugged in, my phone will function like it should. However, as soon as the charger gets disconnected, it's only a matter of minutes before the screen goes blank and my phone shuts itself off without notice. Then when I reboot, chances are that either 1) it won't even boot and shut itself down at the splash screen 2) it's gonna give me a strange battery reading and shut itself off again after 10 seconds of activity. So how am I supposed to drain my battery if I can't even get it to drain, because it constantly shuts itself off?

tcusniper said:
I have similar problems. My phone also shuts down very often. When I turn it on again it shows strange readings like 0%, 11% etc. If I reboot my phone it might either stick with the percentage it showed before, not boot at all, or jump back to 80% or so. However, it never takes long before it shuts down again. Even happens sometimes when using my charger...
Chances of my phone shutting down instantly are nearly at a 100% when using the flash while taking a picture.
I don't know what to think in terms of whether or not this is a software or hardware issue as many other people have similar problems, all on different roms and kernels.
Currently I am on:
Firmware build: 3.33
Kernel: Sultan Kernel r21
Rom: JBMIUIv4.1 #3.3.1
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Click to collapse
The stock battery that comes with the Sensation is known to have this problem. I experienced this problem quite often before I was rooted; a new 1900mAh battery remedied the issue. Here is proof that this isn't software related: after becoming extremely frustrated with the lags and random reboots of my recently ICS-updated Sensation, I decided to do a factory reset. The phone restarted normally with all data wiped and everything seemed like normal again. So I was just sitting there happily with my phone at 50% battery. I decided to open the browser to go and browse the web, and the phone was quite goo- BOOM! RANDOM REBOOT! After my phone finished rebooting, it was at 4% battery!
Moral of the story: HTC doesn't know how to make batteries. Buy a third party battery like Anker.

hellfire191 said:
Hi, my phone battery keeps messing up. I have done a battery calibration but it still seems to mess up.
The main problem is that the battery runs out, 10 mins later I have like 3 percent battery, then that runs out so I start to charge it, it charges up to around 20 percent then it jumps to around 60 percent.
By the way I have terrible battery life too - maybe 1 to 2 hours of use before running out.
Edit - I didn't say this but I am on albinoman887's cm10.1 rom.
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battery life varies from phone to phone, kernel to kernel and rom to rom. but your battery behavior sounds exceptional.
Like stated previously, wiping battery stats in recovery (Battery Calibaration does exactly the same on rooted phones) has never proved me to be efficient. Random shutdowns occur when the phone isn't recieving enough juice from the battery, the demand in voltage will exceed the CPU's capacity and the phone shuts down to prevent damage.
here's something you can try and it worked for me. I used to have random shutdowns and poor battery life aswell.
Wedge a piece of paper, like 0,5-1mm thick, between the upper right corner of your battery, and the battery housing. This way the battery will be presses firmly against the 4 contact pins. Also make sure the contacts are clean.
maybe it's just a battery issue. What does the battery info section say about the condition of the battery?

My anker battery arrived 2 to 3 days ago and it seems to have stopped all problems with the battery.
Thanks for all the suggestions though. I will refer back to this thread if any other problems arise.