Database Develop

Looking for a battery recalibrate hack...

Hiya,
I was poking around the forums a couple days ago and I stumbled across a hack that recalibrates the phone's battery STATUS, it doesn't do anything about helping battery life or anything.
Last night when I was about to go to sleep I had a battery life of 32%. I plugged in the phone, and immediately restarted it. When it booted up again, I kid you not, it had 63% battery life. I turned off the phone while plugged in to see the battery icon, the one that shows.the battery status while its charging with the phone off, and indeed it showed around 63,65%.
Anyone know where I could find this? I think its buried somewhere on the forums.
Sent from my SAMSUNG-SGH-I897 using XDA App

locsplitter said:
Hiya,
I was poking around the forums a couple days ago and I stumbled across a hack that recalibrates the phone's battery STATUS, it doesn't do anything about helping battery life or anything.
Last night when I was about to go to sleep I had a battery life of 32%. I plugged in the phone, and immediately restarted it. When it booted up again, I kid you not, it had 63% battery life. I turned off the phone while plugged in to see the battery icon, the one that shows.the battery status while its charging with the phone off, and indeed it showed around 63,65%.
Anyone know where I could find this? I think its buried somewhere on the forums.
Click to expand...
Click to collapse
THIS WILL HELP RECALIBRATE YOUR BATTERY SO YOU DON'T HAVE THAT ISSUE
1.Charge till full when powered on
2.power off
3.charge till full again
3.boot into recovery(adb reboot recovery or Power off the phone and then hold the volume up + Volume down + the power key. When it goes black the 2nd time release the power button and keep holding the volume buttons.)
3.wipe stats by going into Clockworkmod recovery -> advanced -> wipe battery stats.
4.boot and continue to use as normal

Heres 1 from another board:
""So, you are having trouble with your battery seemingly draining too quickly, especially after having flashed many ROMs/Kernels/etc...
It is possible that the problem (or part of the problem) is not necessarily the phone using too much power. If this is the case for you, you should see some results from doing the following:
1. Connect the phone to the charger with the phone powered on, and allow the phone to charge until it shows 100%
2. Disconnect the phone from the charger, and power it off.
3. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the battery indicator shows 100% (you can use vol-up/vol-down to make the indicator come back up when the screen goes to sleep).
4. Disconnect the phone from the charger and power it on.
5. Once the phone is powered completely on, power it off again and reconnect it to the charger until the battery indicator shows 100%.
6. Disconnect the phone, power it on, and use it.
You should only need to use this sequence one time.
Hope this helps.-Joeybear23"""

Please help with battery charge issues (differt issue than normal)

I just got my captivate and it is clean except from root and sideload and have lead to my first issue. I put my phone on charge over night and went to bed. Then after I woke up I unlocked the phone and saw the phone fully charged sign. I then checked my battery percentage which indicated 100, but when I pulled the charger out it shows 59! I rebooted but it still shows it and I pretty much am sure that it is really 59 and not a miss reading. But why did not fully charge? IS there a setting that I did wrong because my hunch is that when the fully charged sign comes, it stops charging (the zigzag on battery goes of) and the battery drains and the phone never charges again. This is really retarded implementation! Does anyone else have the same problem or any solutions?
Sent from my SAMSUNG-SGH-I897 using XDA App
EDIT: PLEASE DON'T POST ANY RECALIBRATION THREADS IT IS NOT AN ISSUE ABOUT CALIBRATION (HENCE I HAVE DIFFERENT ISSUE ON THREAD TITLE) THE ISSUE IS FURTHER EXPLAINED THREE POSTS BELOW.

Have you tried any of these methods?
HOW TO: Reconfigure Battery Stats
When you flash a new ROM it may be necessary to reconfigure your battery stats.
Signs you may need to re configure:
1. . Using more then 10% battery in an hour or less
2. . While plugged into the charger you lock screen shows a different percentage charge then the battery icon
3. . After a full charge your battery icon only shows 99% and quickly drains.
4. . Any general weird battery activity
Step by step battery reconfigure process: (This is the process that has worked for me time and time again with ROM after ROM)
1. . Flash the Rom on a full battery. (skip to step 6)
2. . If you flashed on less then full plug into AC charger asap and charge to full while the phone is powered on
3. . Once the phone blinks full 2.1-battfull popup shows 2.2-battery sign shows on left of notification bar power off
4. . Charge till full while powered off. the phone will vibrate and the green battery will show 100% in white text
5. . Unplug phone and power on.
6. . Using Root Explorer or a comparable program navigate to (Mount R/W first): data>system> and delete file batterystats.bin
7. . Reboot
8. . While the phone reboots it will rebuild that file and the software and phone should now match.
9. . If any of the symptoms persist start at step 2 and repeat.
10. . As with any rechargeable battery fully discharging the battery once in a while isn't a bad idea
HOW TO: BATTERY Calibrate
1. Connect the phone to the charger with the phone powered on, and allow the phone to charge until it shows 100%
2. Disconnect the phone from the charger, and power it off.
3. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the battery indicator shows 100% (you can use vol-up/vol-down to make the indicator come back up when the screen goes to sleep).
4. Disconnect the phone from the charger and power it on.
5. Once the phone is powered completely on, power it off again and reconnect it to the charger until the battery indicator shows 100%.
6. Disconnect the phone, power it on, and use it.
You should only need to use this sequence one time.

dfuse06 said:
Have you tried any of these methods?
HOW TO: Reconfigure Battery Stats
When you flash a new ROM it may be necessary to reconfigure your battery stats.
Signs you may need to re configure:
1. . Using more then 10% battery in an hour or less
2. . While plugged into the charger you lock screen shows a different percentage charge then the battery icon
3. . After a full charge your battery icon only shows 99% and quickly drains.
4. . Any general weird battery activity
Step by step battery reconfigure process: (This is the process that has worked for me time and time again with ROM after ROM)
1. . Flash the Rom on a full battery. (skip to step 6)
2. . If you flashed on less then full plug into AC charger asap and charge to full while the phone is powered on
3. . Once the phone blinks full 2.1-battfull popup shows 2.2-battery sign shows on left of notification bar power off
4. . Charge till full while powered off. the phone will vibrate and the green battery will show 100% in white text
5. . Unplug phone and power on.
6. . Using Root Explorer or a comparable program navigate to (Mount R/W first): data>system> and delete file batterystats.bin
7. . Reboot
8. . While the phone reboots it will rebuild that file and the software and phone should now match.
9. . If any of the symptoms persist start at step 2 and repeat.
10. . As with any rechargeable battery fully discharging the battery once in a while isn't a bad idea
HOW TO: BATTERY Calibrate
1. Connect the phone to the charger with the phone powered on, and allow the phone to charge until it shows 100%
2. Disconnect the phone from the charger, and power it off.
3. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the battery indicator shows 100% (you can use vol-up/vol-down to make the indicator come back up when the screen goes to sleep).
4. Disconnect the phone from the charger and power it on.
5. Once the phone is powered completely on, power it off again and reconnect it to the charger until the battery indicator shows 100%.
6. Disconnect the phone, power it on, and use it.
You should only need to use this sequence one time.
Click to expand...
Click to collapse
Ill try that but the thing is that I didny flash any roms so i don't know if it is a calibraion problem. Also can anyone confirm that the battery stops charging once full while connected into charger?
Sent from my SAMSUNG-SGH-I897 using XDA App

http://forum.xda-developers.com/showthread.php?t=765656

PROBLEM
EDIT: I did some more searching and found that some people said they have this problem and some people don't?!? Pretty much what happens is that when it hits 100% it stops charging so then it drains over night without charging again. This is STUPID! But just to make sure this is a stock problem I want to test if this happens to people here. Can you please post if this happens to you or not? (also post if your on a custom rom)

joeshmoe08 said:
EDIT: I did some more searching and found that some people said they have this problem and some people don't?!? Pretty much what happens is that when it hits 100% it stops charging so then it drains over night without charging again. This is STUPID! But just to make sure this is a stock problem I want to test if this happens to people here. Can you please post if this happens to you or not? (also post if your on a custom rom)
Click to expand...
Click to collapse
It's never happenned to me stock or custom ROMS, it really looks like you need to callibrate your battery. I've experienced a similar issue as you and a simple callibration fixed it. I've never had it stop charging when plugged in after a full charge.

Rhiannon224 said:
It's never happenned to me stock or custom ROMS, it really looks like you need to callibrate your battery. I've experienced a similar issue as you and a simple callibration fixed it. I've never had it stop charging when plugged in after a full charge.
Click to expand...
Click to collapse
Really??? Ok I will try recalibrating, but I don't know how my calibration got messed up since I really didn't flash any roms.

I think ( dont know for sure) this happens when you first get the phone and do not charge it fully before first power on. I think android stores this half chrged battery as full and starts the cycle from their so it never actually charges.
i would use rom manager delete battery status pull battery for 5 min then put battery in and charge from the wall till it sais full and repeat this over once
Sent from my SAMSUNG-SGH-I897 using Tapatalk

bwill87 said:
I think ( dont know for sure) this happens when you first get the phone and do not charge it fully before first power on. I think android stores this half chrged battery as full and starts the cycle from their so it never actually charges.
i would use rom manager delete battery status pull battery for 5 min then put battery in and charge from the wall till it sais full and repeat this over once
Sent from my SAMSUNG-SGH-I897 using Tapatalk
Click to expand...
Click to collapse
Ya thats actually a likely explanation. Recalibrating now. Almost to the point to remove battery stats.

[Q] Battery problem?

A strange thing happened to me: last night I turned off the phone with about 60% of charge remaining, this morning I turn it on and I find 13%, after a reboot it gave me 50% ...
What can be the cause?

I found that here:http://forum.xda-developers.com/showthread.php?t=755903&page=33
You can try it :
This is the procedure that works for me:
The following steps should significantly extend the battery life on your phone:
1. Let the battery drain close to empty (5% or less).
2. Connect the phone to the charger (AC or USB, USB is better) while powered on and allow the phone to charge until the notification LED is green, indicating the device is fully charged and untill the voltage is at least 4187mV. A higher voltage like 4192mV or more is even better. Use a tool like Overcharged or Battery Indicator to monitor this. Note that a green notification LED does not automatically mean that the voltage is good too.
A higher voltage means in practice that it will take longer to discharge, a lower voltage means that the battery will discharge a lot quicker! The difference can be quite significant!
3. Disconnect the phone from the charger and power it off.
4. Reconnect the phone to the charger while powered off and allow the phone to charge until the notification LED is green. The notification LED may turn green immediately. Leave it on the charger for another hour.
5. Disconnect the phone from the charger and power it on.
6. Once the phone is powered on completely (has restarted fully) wait 2 minutes and power it off again.
7. Reconnect the phone to the charger while powered off and allow the phone to charge until the notification LED is green. The notification LED may turn green immediately. Leave it on the charger for another hour.
8. Leave the phone on the charger and reboot into the ClockWorkMod recovery menu and wipe the battery stats via -> Advanced -> Wipe battery stats.
9. Disconnect the phone from the charger, restart the phone and start using it as normal.
From then on always let the battery drain close to empty (5% or less) as often as possible and then charge untill the voltage is at least 4187mV. A higher voltage like 4192mV or more is even better.
Normally you will have to do this only once. However, on all Android ROMs, if you flash a ROM while charging or during the first boot screen on, first boot mucks up the levels Android thinks the phone is at, i.e. Android will think you’re at 100% when maybe you’re only 90% or whatever. So in theory you will need to repeat this every time you flash a ROM while charging!
Better is to make sure the battery is charged before you flash a ROM and just remove the USB/charge cable before you flash a ROM. Put it back in (if you must) after the first boot screen (when the custom screen or whatever shows).

Thank you, I'll try it

+ [Solution] Empty 0% battery bootloop on 4.3 Xperia T

I still didn't get my OTA in Croatia so I decided to try this. I came across an issue which wasn't present in official 4.1.2. and maybe someone had (and still has) it as well. I'm posting this here so that it's easier to find if anyone has this issue and wants to fix it.
I have installed 4.3 on my Xperia T with Locked Bootloader and everything worked fine. However, I have come across a issue and managed to solve it as well. Here's what happened and how I solved it, maybe it helps someone with same problem.
Today my battery drained to 0% and the phone shut down. Now when I plug it in to wall socket to charge, red LED goes on and it turns the phone on. Once Android boots I can see 0% in status bar and it starts shutting down again. Then it boots up again and loops like that. I remember that on 4.1.2. there would be a battery icon when it was completely empty and it wouldn't boot the system. Now it just loops. This didn't happen on official 4.1.2.
I have Googled for solutions and have tried this.
"1. Press and hold down the power key on the right side of the phone. If the battery status LED flashes red, try plugging the charger into the phone at the same time as you are pressing and holding in the power key.
When plugging the charger into the phone there is a risk that nothing happens – no red battery status LED as indication of charging, or nothing appearing on the screen.
If the charging doesn’t start, follow the instructions under To let the charger be plugged in for 24 hours.
2. If the charging starts, keep charging the phone until it’s fully charged. Indication of charging is that the battery status LED lights up in red, or that the SONY symbol appears on the screen and then the LED lights up."
Problem was that when I left it to charge (screen off, LED red) it would start booting again after a few minutes. When it started to boot, I would press volume up + power key to shut it down and keep charging. I had to do this many times (10 to 15) and it was very frustrating but it worked in the end. I decided to let it boot and voilà! it showed 1% battery and didn't start shutting down. Now it's charged to 2% and keeps on charging.
The lesson - don't EVER let your Xperia discharge below 1%, you'll have a world of problems.

I have the exact same problem, except that it doesn't even charge when my screen is off.

Great find! I used a separate way to get it to charge but I can assure you it gave me a world of pain! Thank you for sharing

What about the Xposed module DisableCriticalBatteryShutdown?
If or devices were no longer turning off again after booting when battery is 0%, the problem would be fixed, right?
Sent from my LT25i using xda app-developers app

Endless boot cycle, don't know if it's power or OS issue

I looked in the previous threads about non-booting but no one I could find had my issue. Bought the Nook HD+ about 4 months ago and rooted it and installed Android (not sure which version but cm11). Out of the blue, last week I pulled it out of my bag and the battery % was flipping between 1% and 31%, so I put some stuff on it via USB and then shut it down to charge. I plugged it in overnight and tried turning it on in the morning. All I was getting was the low battery picture, so I kept trying to charge it, but it wasn't charging, the power light would go to orange when I plugged it in, thena fter 3-5 seconds it would flip green and then turn off and retry. My assumption is the battery is dead, but it could be a corrupted OS now as I got it to charge long enough to get to the CM11 boot menu. But I even went out and bought a new charger and converter to rule that out and it still is stuck in the same boot sequence. I obviously can NOT charge this thing while it is off because of it's reboot loop, it can't charge. I'm not quite sure what is going on or whether it is a battery or boot issue but after I leave it for a big it freezes on the cyan picture (which is frozen on some scrambled version of it) until I turn it off.
I can't power it on enough to charge it to rule out the battery, I tried holding the power and n button for 3 seconds, letting go of the power, and then pressing it again to get into the recovery menu, but that isn't working either. And I prepared another SD card for a second flash for a corrupted OS and that didn't seem to work either.
I'm stuck here and I'm not sure what to do now to get it running again. I don't care about the data on my tablet at the moment.

Try plugging it into a PC USB port over night.
Sent from my SPH-L900 using XDA Free mobile app

That's what I did that got it charged enough to get to try to boot, where it now shuts down. But now as it tries to boot it reboots, maybe from too much power consumption? I only had it plugged in for half hour or hour before that got it charged to the point where it boots to the logo screen. I have a feeling it is not charging because every reboot the light turns off (orange light stays on for like 5 seconds)
I will plug it in to my PC and charge it overnight and let you know what happens. It's interesting, I plug it in now and the orange charge light comes on, shows the Nook screen, then shows the low battery screen and shuts off, then the orange light turns off, but it remains plugged in... not sure if it is still charging but as I said, I will leave it overnight and see what that gets me.

No success. I can turn it on and the charging lights turns on for 5 seconds and shows the nook screen, then goes black and shows the low battery screen, then immediately shuts off and the charging light turns off and it no longer charges.

Any other suggestions? I can't seem to do anything with the Nook now.