Develop Bugs

Best way to calibrate battery

Everytime I reboot my phone my battery drops a significant amount. I tried charging it in full, unplugging it, & doing it again & then wipe battery stats but its still the same. Anything else I could do?
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shakim24 said:
Everytime I reboot my phone my battery drops a significant amount. I tried charging it in full, unplugging it, & doing it again & then wipe battery stats but its still the same. Anything else I could do?
Sent from my SPH-D700 using XDA Premium App
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There are different theories/methods for this. I charge to full, unplug, wipe battery stats, plug in and charge to full again, wipe stats then let it run down to about 15% and recharge and wipe one last time. People will say my way is crap but it seems to help. Also, just letting the battery run down and charging back up seem to condition the battery to your new setup. There are several little tweaks made by devs in pursuit of better battery life so it may read inaccurately at first. Let your battery settle in. I say in a day or two, you will see improvement
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Dunno about the "best way", but this is a convenient way without having to boot into CWM.
Battery Calibration
NéMa
Market link

ghostrid3r said:
Dunno about the "best way", but this is a convenient way without having to boot into CWM.
Battery Calibration
NéMa
Market link
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Thanks man. Worked well for me
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best way!!!!

[Q] Never have to calibrate battery?

You can wipe battery stats from a file, I just don't remember what it is. My question is if I want to switch to a new rom, can I backup and restore it and not have to calibrate my battery?

ugothakd said:
You can wipe battery stats from a file, I just don't remember what it is. My question is if I want to switch to a new rom, can I backup and restore it and not have to calibrate my battery?
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From my understanding, what youre saying is that you have a current rom now. And if you back that up, flash to a new rom, and then go back to the rom you backed up do you still have to calibrate?
I believe your battery stats are saved when you back up, so I doubt you do, but for best results calibrate it .. especially because your phone dies different every day because you use it differently, so once a month, even with the same rom wouldnt hurt to calibrate.

There is an app called "Battery Calibration" by Ne'Ma that does exactly that. Its free. You have phone plugged in charging and when phone gets to 100%, you press it and it wipes the stats from the file
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Or wipe battery stats in cwm.

The Root said:
Or wipe battery stats in cwm.
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This too.
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JohnCorleone said:
There is an app called "Battery Calibration" by Ne'Ma that does exactly that. Its free. You have phone plugged in charging and when phone gets to 100%, you press it and it wipes the stats from the file
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I think he means something else ..
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Wipe battery stats from clockwork then recharge to max then turn on phone
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No, lets say I'm already calibrated. If you switch to a new rom, the stats are wiped, right? If that's so, couldn't "/data/system/batterystats.bin" be backup up before flashing a new rom, and restored after flashing it so you don't have to re calibrate the battery?

[Q] battery drain problem JB back to stock.

i updated to jellybean LI8 from stock t999 LH2 version, but because of super heavy battery drain i flashed it back to LH2 thru odin.
However i still get same heavy battery drain. i use up 10% every 1 hr just with screen on. before i used up about 3~5% for 1 hr.
i was able to get about 14~16hrs with normal use before, but now i dont think i can even get 10hrs.
it seems that the sim card area gets hot whenever the screen is on, and cools down when off. before flashing my phone was never heated
unless i was playing heavy graphic games..is there a way to completely flash the system files? or to fix this problem...pls help. thanks

Your numbers don't make sense. Need a screenshot.

I also observe the battery drain.
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Aerowinder said:
Your numbers don't make sense. Need a screenshot.
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phone this morning for 2.4 hr usage and already 74% left...

Give it a few full charge/discharge cycles to work itself out.
How did you update to jb? How did you revert to ics? Custom roms, otas or full firmwares?
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DocHoliday77 said:
Give it a few full charge/discharge cycles to work itself out.
How did you update to jb? How did you revert to ics? Custom roms, otas or full firmwares?
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I did jellybean update thru OTA here http://forum.xda-developers.com/showthread.php?t=1850534, then i reverted to ics using odin and using the stock ota file here http://androidromupdate.com/2012/08/25/restore-back-t-mobile-samsung-galaxy-s3-sgh-t999-back-to-original-ics-4-0-4-t999uvalh2-stock-firmware/

Screen time is fine. I don't see a problem here.

Aerowinder said:
Screen time is fine. I don't see a problem here.
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yes the screen % is fine so i dont know where its draining the battery...
i think something wrong with system file because my phone really didnt get warm just from having the screen on.
is the method i reverted to ics correct? or is there another way to completly reset/overwrite my phone back to stock?

If your phone is working, your method wasn't incorrect. If you flashed the stock firmware through Odin, that's as virgin as it gets.
Battery Info and KakaoTalk are obvious culprits. Tell me about your wifi situation. Are you connected to a wifi network?

yeah usually i leave wifi and kakao talk on most of the day but it doesnt drain battery this fast...it just messed it up after the jellybean update., it was 100% this morning, 4 hours and now i got 60%. usually i would probably still have around 85%+

I'm in xquizit v26 and observed that I'm not getting a deep sleep and the battery drain in less than 5 hours. I reflash the rom with full wipe and still have the same issue. I step back and investigate what cause this problem. It seems that when I flashed the kitchen v6 with open vpn cause not to have a deep sleep. With out the open vpn I was able to get a deep sleep. On the first cycle I was able to get the 15hrs battery life. I will continue to observe this because the battery behavior can only be observed after 3 days.
I tried to post this in the ROM section but XDA wont allow it because I only have less than 10 post.
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accrisostomo said:
I'm in xquizit v26 and observed that I'm not getting a deep sleep and the battery drain in less than 5 hours. I reflash the rom with full wipe and still have the same issue. I step back and investigate what cause this problem. It seems that when I flashed the kitchen v6 with open vpn cause not to have a deep sleep. With out the open vpn I was able to get a deep sleep. On the first cycle I was able to get the 15hrs battery life. I will continue to observe this because the battery behavior can only be observed after 3 days.
I tried to post this in the ROM section but XDA wont allow it because I only have less than 10 post.
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You should pm this to wildchld. As far as i can remember this is the first ive heard of it and maybe the same for others.
Search the thread first to see if anyone else has reported. If not or if you think you have information to add shoot him a quick pm.
If you dont want to let me know and ill get the info to him so we can test it out.
Thanks man!
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---------- Post added at 10:50 PM ---------- Previous post was at 10:46 PM ----------
yjsjin said:
yeah usually i leave wifi and kakao talk on most of the day but it doesnt drain battery this fast...it just messed it up after the jellybean update., it was 100% this morning, 4 hours and now i got 60%. usually i would probably still have around 85%+
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If you can go without, try uninstalling those two apps and see if it settles at all. Also get cpuspy to see how often the phone goes into deep sleep.
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okay so i jus instaled the cpuspy and saw that theres a lot of deepsleep so i guess theres no problem..?
and i think its not the app but the thing with screen. whenever the screen turns on, it gets hot and the batt uses alot..
i tried re-flashing using odin while ago but still the same.

I would suggest flashing wildchlds XquiziT or DJintrigues Frosty JB. They both have done very good jobs at getting more out of your battery while still remaining stable. Being on the full stock leak i doubt you will easily find a way to acceptable battery life. At full stock i kind of remember LI8 being one of the worst for battery.
There are actually multiple causes, some depend on how you use the phone.
Another thing you can do to help hunt it down is get Better Battery Stats.
Also in Settings > Dev Options check show cpu usage and itll tell you what processes are using the processor in real time. You will likely see 2 or more that seem to stay at the top of the list.
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DocHoliday77 said:
I would suggest flashing wildchlds XquiziT or DJintrigues Frosty JB. They both have done very good jobs at getting more out of your battery while still remaining stable. Being on the full stock leak i doubt you will easily find a way to acceptable battery life. At full stock i kind of remember LI8 being one of the worst for battery.
There are actually multiple causes, some depend on how you use the phone.
Another thing you can do to help hunt it down is get Better Battery Stats.
Also in Settings > Dev Options check show cpu usage and itll tell you what processes are using the processor in real time. You will likely see 2 or more that seem to stay at the top of the list.
Sent from my SGH-T999 using xda app-developers app
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i checked the XquiziT's ROM and i think lots of people are saying the battery problem was solved so mayb ill try it with this one, however when i went over the posts it seemd that theres prob with the kitchen? thingy and they took it down. is it possible to jus flash the XquiziT Rom without the kitchen features?

Yes you can flash rom without kitchen. Hes actually working on a new release hoping for today I believe.
Kitchen was taken down due to possible bricks when using wallet and mobile odin.
Also, battery problems are not 100% solved in either rom but are close!
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hey thanks for the replys...
ive tried to flash the v26 through recovery boot menu but it says E:verification error. i think its because i flashed back stock by odin, how can i solv this problem?

Have you reinstalled twrp or cwm? Stock recovery wont flash that.
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Remove the battery for 5 min...and then check for the drain. Mine fixed itself up this way.

okay so i installed twrp and did the install but still same prob with the heating battery lose. i will try few more wipeout+install and the battery takeout thing too and post up

[Q] Xperia S modded battery issue

I am new to the custom rom thing but I am loving it because I was about to throw this phone away "Xperia S" but after playing around with roms and kernels I am back to liking my phone again. My question is related to the battery, I added the PAC rom V18 and I also added the Nova kernel V5 but my only complaint is the battery is drained very fast that it doesn't go through the day, I am an average user so I don't listen to music or watch movies. Is there a solution or a kernel that can improve the battery life.
Thanks

Did u celebrate your battery?
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pharix said:
Did u celebrate your battery?
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No I didn't, do you know how to calibrate it? Thank you for your reply

amagdy81 said:
No I didn't, do you know how to calibrate it? Thank you for your reply
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Follow these steps:
1. Use your battery to 0%
2. Charge it to 100%
3. Go to CWM > Advance
4. Wipe Battery Stats.
5. Fix Permissions (This may take sometimes).
6. Again use your battery to 0%
7. Again charge it to 100%

I looked for wipe battery data in the advanced tab in CWM recovery but I didn't find it
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amagdy81 said:
I looked for wipe battery data in the advanced tab in CWM recovery but I didn't find it
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There is no "Wipe Battery Stats" in advance tab? But it must be there.

I will try it today and let you know
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Batt started drainning very fast

Guys, I don´t know what happened but 2 or 3 days ago I started noticing that every once in a while my battery starts draining super fast. I mean 10% in 20min. I went to bed yesterday with 67% and when I woke up I had zero battery. I notice that when this is happening the phone gets really hot. I didn´t change anything on the phone but I did get some updates these days (1 small system update, facebook, smooth calendar, facebook, whatsapp.....at least I think these were the ones). Any ideas what might be happening? It´s random thing. Yesterday it was good all day long and then at night it happened.
I´ve just tried doing a factory reset but nothing happened.

rawfa said:
Guys, I don´t know what happened but 2 or 3 days ago I started noticing that every once in a while my battery starts draining super fast. I mean 10% in 20min. I went to bed yesterday with 67% and when I woke up I had zero battery. I notice that when this is happening the phone gets really hot. I didn´t change anything on the phone but I did get some updates these days (1 small system update, facebook, smooth calendar, facebook, whatsapp.....at least I think these were the ones). Any ideas what might be happening? It´s random thing. Yesterday it was good all day long and then at night it happened.
I´ve just tried doing a factory reset but nothing happened.
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Sometimes an app prevents your phone from going yo deep sleep. Install betterbatterystats. It shows which apps are causing wakeblocks. Uninstall all apps. Also, which rom and kernel u use?
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{< r o N o $ said:
Sometimes an app prevents your phone from going yo deep sleep. Install betterbatterystats. It shows which apps are causing wakeblocks. Uninstall all apps. Also, which rom and kernel u use?
Sent from my HTC One X using xda premium
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When I go to power and then usage, the biggest consumers there are "Android System" (54%) and "HTC Sense" (24%). I´ve downloaded Gsam Battery Monitor and it tells me sreen 50% and app usage 46%. When I click in app usage it tells me Android System 20% and Kernel 9,6%.
I have no idea if these numbers are excessive or not.
I did a factory reset and I´m not charging the phone to check out how long it takes to go down from 100%.

rawfa said:
When I go to power and then usage, the biggest consumers there are "Android System" (54%) and "HTC Sense" (24%). I´ve downloaded Gsam Battery Monitor and it tells me sreen 50% and app usage 46%. When I click in app usage it tells me Android System 20% and Kernel 9,6%.
I have no idea if these numbers are excessive or not.
I did a factory reset and I´m not charging the phone to check out how long it takes to go down from 100%.
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Go to recovery. Advanced, wipe battery stats. Nd deb see again after couple hours
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{< r o N o $ said:
Go to recovery. Advanced, wipe battery stats. Nd deb see again after couple hours
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Hi, can I do this if i'm not rooted?
Thanks!
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admp said:
Hi, can I do this if i'm not rooted?
Thanks!
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You can only do this with an unlocked bootloader and have flashed a custom recovery.
It's all in the 'One X All In One Kit'. Search for it .
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appiehappie94 said:
You can only do this with an unlocked bootloader and have flashed a custom recovery.
It's all in the 'One X All In One Kit'. Search for it .
Sent from my Galaxy Nexus using xda app-developers app
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Thanks mate!
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A factory reset resolved the issue.

appiehappie94 said:
You can only do this with an unlocked bootloader and have flashed a custom recovery.
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Or charging to 100%.

BenPope said:
Or charging to 100%.
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So you think that when you are at 100% of your battery, you suddenly get access to the recovery?... (this is what you literally say)
Or did you mean to say that your battery stats are wiped when the battery is at 100% .
Still I think that the second explanation is one big whoop, since my battery used to drain life too with a dubious combination of kernel, recovery and ROM. A fully charging of the battery (which I do every night) did not make this problem go away.
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Wiping battery stats does nothing. It's already been shown. Search Google. It's not going to magically make your battery lady longer
Unfortunately
Sent from my HTC One X using Tapatalk 2

In fact wiping the batt stats will not make your phone last longer on a full charge, it resolve the problem that the rom will not display wrong batt info
That's what i learned
As what Mr S says ... didn't see your post while i was writing mine

Factory reset resolved it

rawfa said:
Factory reset resolved it
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Glad you got it working.
But just to reinforce this for other people: wiping battstats does nothing. Your battstats are reset everytime you charge too 100%.
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kylec said:
Glad you got it working.
But just to reinforce this for other people: wiping battstats does nothing. Your battstats are reset everytime you charge too 100%.
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So does this mean battery calibration after installing a new ROM is useless? Or is that different than wiping battery stats?

yash777 said:
So does this mean battery calibration after installing a new ROM is useless? Or is that different than wiping battery stats?
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Pretty much lol. I mean theres no harm in it but its a waste of time because lithium ion/polymer batteries don't have a memory effect.
So pretty much after you flash a new rom, just use it as per normal. I've tried a lot of different scenarios over the past 3 or so years with battery calibration and roms and never noticed anything significant. Mostly placebo
Edit: with that said, if you feel more comfortable doing a calibration and you feel your battery is better. Just keep calibrating
For example: when I flash a rom, I still wipe dalvik cache out of habit even though devs have already said it gets wiped when you do a full wipe lol
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