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I've got this problem with my tab (quick battery drainage). Symptoms would be your 100% charged tab would go down to 0% in unusual shorter time ( like 2-4 hours). You put it on charger and tab would be charged back to 100% again in substantial short time like 2-3 hours instead of 6-7 hours.
Well, after looking at this issue I think I have come up with solution.
At least, my tab looks like it's back on track... though, to say for sure I would need another couple days of testing.
The problem is not runaway wild application on a background but battery control circuit. This chip reports to OS much smaller battery capacity as it is for some reason. I will not go into details but here is what you need to try:
Flash stock kernel (may be custom kernel is not the reason for bad chip calibration and I'm 90% positive but just to be on safe side). You don't need to do factory wipe in OEM recovery for our purpose.
You also don't need to wipe batterystats.bin or use "Battery Calibration" apps from market (which does exactly the same wipe just in more end user friendly way). This wipe serves no other purpose then refreshing your usage statistics.
You also don't need to drain your battery all way down... nice, this way you don't have to wait for too long.
Well, here we go:
charge tab somewhere in between 80 and 100%.
edit: remove charger
shutdown tab (not put in hibernate/sleep) for 1 hour.
edit: turn tab on and run it for 30-40 min. or whatever it takes to drop charge to 40-50%.
shutdown tab again for 5 hours (overnight).
turn tab again and check... you should be fine now, charge it again 100% and use as usual.
That should do correct chip calibration.
PS: the reason why this chip calibration went bad at the first still remains open.
EDIT: just want to give a shortcut for those who does not feel like reading through the thread.
http://forum.xda-developers.com/showpost.php?p=16771651&postcount=41
Edit: here is calibration procedure which was modified down this thread ...
1. in CWM/recovery let it sit till battery in terminal will show less then 3700. The less you can get it the better. 3400 is probably absolute minimum.
2. shut down tab and let it sit for 1 hour.
3. plug it to charger and charge it for 5 hours.
4. disconnected charger and let it sit for 1 hour.
5. boot up your tab and test it, it your battery still not calibrated you can flash back your backup and repeat calibration procedure.
Edit: if you physically disconnect battery (you have to disassemble tablet) and keep it for couple min. that would trigger FG chip to start with default SOC curve.
Any follow up? Did this fix work for you since yesterday or anyone else?
yup, this is it...
This is how properly calibrate sg tab's batteries. There are some variations to the process but essentially battery will be calibrated in two measurements which stand apart by minimum 40% when battery is at rest on time intervals 1 and 5 hours.
No need to do factory reset, wipe batterystats, use battery calibrator apps from market or dance around with rain stick... all this will give same result as woodoo magic... though if by some reason battery calibration conditions are met then one may claim a miracle.
*sigh of relief* looks like this worked. More people that have this issue should now about this. Thank you for the fix.
Sent from my DROID2 using XDA App
Is this the same as the Sleep on Death (SOD) syndrome? that while charging it dies overnight and then you have to long press the power button and/or charge it to get it back?
Worked for me so far all good thanks
Sent from my GT-P7510 using XDA Premium App
Thanks will try this after flashing many custom roms I've been suffering from fast drainage which is not normal from when I had it on stock.
hyann said:
Is this the same as the Sleep on Death (SOD) syndrome? that while charging it dies overnight and then you have to long press the power button and/or charge it to get it back?
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Click to collapse
How long your tab usually works on one charge? if 8 and more hours - then no, I would think that there is a bug in Android charger control.
Vlad_z said:
yup, this is it...
This is how properly calibrate sg tab's batteries. There are some variations to the process but essentially battery will be calibrated in two measurements which stand apart by minimum 40% when battery is at rest on time intervals 1 and 5 hours.
No need to do factory reset, wipe batterystats, use battery calibrator apps from market or dance around with rain stick... all this will give same result as woodoo magic... though if by some reason battery calibration conditions are met then one may claim a miracle.
Click to expand...
Click to collapse
May I ask what do you mean by rest time intervals of 1 and 5 hours?
Does it mean that the calibration will only take place when the tab is off for 1 hour, then switch on and used till battery depleted by a further 40% minimum and the switch off for another 5 hour. Correct?
Also , is this 40% refer to value before or after calibration? I asked this because when I restart my tab the value changed (ex: 36% before restart to 53% after restart)
wlighter said:
May I ask what do you mean by rest time intervals of 1 and 5 hours?
Does it mean that the calibration will only take place when the tab is off for 1 hour, then switch on and used till battery depleted by a further 40% minimum and the switch off for another 5 hour. Correct?
Also , is this 40% refer to value before or after calibration? I asked this because when I restart my tab the value changed (ex: 36% before restart to 53% after restart)
Click to expand...
Click to collapse
Yes that's correct.
Fuel gauge chip will take 1 measurement of open circuit voltage and internal resistance only when battery is at rest (no charge/discharge) for at least 40min. - so I say 1 hour just to be sure...
Consecutive measurements, from which gauge chip can derive capacity of the battery have to be at least 40% and 5 hours apart.
Technically speaking, that 40% difference can be in either directions. Say you have 40% as of now, leave it in rest for 1 hour, then charge it to 100% and leave it at rest for 5 hours and you will have same result.
Condition "at rest" means voltage change less then 4mV (or mkV) per sec. - I don't remember.
When tablet is in sleep some background processes may awake tablet briefly and reset the 1 hour counter - so to make it work for sure, simply do shutdown.
if you want additional reading on my findings then look here:
http://forum.xda-developers.com/showpost.php?p=16615800&postcount=517
I tried this method...
1.Charged tab t0 80%, then shut down (removed charger) for 1 hour.
2.Turned on tab and played games for about 45min till battery was 49%.
3.Turned off tab and let sleep for 5 hours (charger still removed).
4.Turned tab back on and battery reads 79%, used for about 20min and battery reads 68%... Seems battery drain is still happening?
Right now i'm charging the tablet back upto 100% then perhaps try this method again... Did I do something wrong?
jzen said:
I tried this method...
1.Charged tab t0 80%, then shut down (removed charger) for 1 hour.
2.Turned on tab and played games for about 45min till battery was 49%.
3.Turned off tab and let sleep for 5 hours (charger still removed).
4.Turned tab back on and battery reads 79%, used for about 20min and battery reads 68%... Seems battery drain is still happening?
Right now i'm charging the tablet back upto 100% then perhaps try this method again... Did I do something wrong?
Click to expand...
Click to collapse
same problem im facing. This is why im wondering is the 40% value of before or after calibration. Because although it might drop 40% before calibration is done, the real drop value might be less then that. Which means to the chip it might just see a drop of example 20% of real drop and hence it didn't perform the calibration because conditions of 40% is nt met.
I did forget to flash back to the stock kernel (using pershoot's).
I just flashed to doc's slim 6.5 which has a modified stock kernel (couldnt find just the stock kernel and my internet is too slow to download the entire stock rom.). Going to try this method again but starting at 40%
1.Battery at 40%, shutdown tablet for 1 hour.
2.Charge tablet to 100% (while shutdown)
3.Leave tablet shutdown for 5 hours
4.Pray to droid gods, find my rain stick and begin dark resurrection ritual while watching true blood.
My only question now is... Should I turn the tablet back on after the 1 hour shutdown? Or should I leave it shutdown and just plug in charger till its 100% charged, then let it stay shutdown for 5 hours?
This is what worked for me:
1. Charged tab to 100% removed from charger.
2. Power down for 1 hour.
3. Power on (tab at 96%)
4. Drain to 46%
5. Power off for 5 hours
When I powered the tab back on after the 5 hours, i used it for a while and rebooted and the battery reading stayed the same which it wasn't doing before the calibration. It has been draining and charging at a normal pace since then and has remained the same after reboots and ROM flashes since the calibration.
FillTheVoid said:
This is what worked for me:
1. Charged tab to 100% removed from charger.
2. Power down for 1 hour.
3. Power on (tab at 96%)
4. Drain to 46%
5. Power off for 5 hours
When I powered the tab back on after the 5 hours, i used it for a while and rebooted and the battery reading stayed the same which it wasn't doing before the calibration. It has been draining and charging at a normal pace since then and has remained the same after reboots and ROM flashes since the calibration.
Click to expand...
Click to collapse
I'm going to go ahead and try this method right now! But for me... sometimes my battery will not charge unless the unit is shutdown (ever since battery issues started.). I hope this time it will charge while its on.
Also the instructions say to flash the stock kernel before trying this method... Did you do this? And were you able to flash back to pershoot's without issue?
*Update:
It doesn't look like its charging, (system on). Should I just shutdown and charge it to 100%? Then continue with said method? Anyone know if this method will work while tablet is shutdown through the entire process?
jzen said:
I'm going to go ahead and try this method right now! But for me... sometimes my battery will not charge unless the unit is shutdown (ever since battery issues started.). I hope this time it will charge while its on.
Also the instructions say to flash the stock kernel before trying this method... Did you do this? And were you able to flash back to pershoot's without issue?
Click to expand...
Click to collapse
My tab was charging while on, sometimes it wouldn't show it till after a reboot. I did mine from stock 3.1. (A backup I made before I took the TW OTA) I have not re-flashed pershoot's kernel and probably wont till the bug is worked out. I did however flash the deodexed stock TW and flashed a theme and have had no issues.
Edit: if its not chargin while on, i would charge it all the way while off then turn it on so it can read the battery then start the 1 hour power down.
Correction guys...
I was sure that our p7510 model was using TI bq20z75 fuel gauge chip but with new information looks like it's Maxim 17042 chip... It's embarrassing but I have to stay corrected. TI chip would calibrate itself in procedure outlined above as for Maxim - I don't know yet. I'm looking at it.
These are good and bad news. Good one - with this new fact, it's very possible that the reason of chip's SOC counter corruption is in software. Driver for Maxim is pretty messy and complex (because it's messy). In contrast driver for TI is simple and straight forward (because TI chip is smart). Software can be fixed but problem in hardware design not so easy.
Well, I will report back when I find something.
So, will FillTheVoid 's method work with my GT-p7510? :x
Vlad_z said:
Correction guys...
I was sure that our p7510 model was using TI bq20z75 fuel gauge chip but with new information looks like it's Maxim 17042 chip... It's embarrassing but I have to stay corrected. TI chip would calibrate itself in procedure outlined above as for Maxim - I don't know yet. I'm looking at it.
These are good and bad news. Good one - with this new fact, it's very possible that the reason of chip's SOC counter corruption is in software. Driver for Maxim is pretty messy and complex (because it's messy). In contrast driver for TI is simple and straight forward (because TI chip is smart). Software can be fixed but problem in hardware design not so easy.
Well, I will report back when I find something.
Click to expand...
Click to collapse
A lot of this is way over my head, but my battery calibration seems to be accurate, although I can't be absolutely sure because I have no stats from the previous calibration to compare it to. I do know for sure that after this process the bug of it draining then after reboot going back to what it should be is gone.
so i guess we need to flash back the stock ROM w/o TW for this procedure to work? I was trying the same steps with StarBurst + pershoot kernel it seem that it doesn't work. Anyone manage to calibrate with pershoot kernel?
I'm having this problem with my i777.
Sometimes when I reboot the phone the battery charge drops enormously, like 30% or so. For example, I will be doing things with the phone, the charge will be at something like 60% then reboot and right after reboot it says charge is 30% which doesn't make much sense.
this happens with the stock battery but the effects seems to be more pronouced with some batteries I bought on ebay.
Anyone has any idea what's going on?
what rom are you running on?
bartolo5 said:
I'm having this problem with my i777.
Sometimes when I reboot the phone the battery charge drops enormously, like 30% or so. For example, I will be doing things with the phone, the charge will be at something like 60% then reboot and right after reboot it says charge is 30% which doesn't make much sense.
this happens with the stock battery but the effects seems to be more pronouced with some batteries I bought on ebay.
Anyone has any idea what's going on?
Click to expand...
Click to collapse
Normal behavior of our fuel gauge hardware - high load (boot process) immediately after a reset confuses it and makes it report low. Effect is much more pronounced at lower states of charge.
pham818 said:
what rom are you running on?
Click to expand...
Click to collapse
Rooted stock 2.3.4
build number: GINGERBREAD.UCKH7
Entropy512 said:
Normal behavior of our fuel gauge hardware - high load (boot process) immediately after a reset confuses it and makes it report low. Effect is much more pronounced at lower states of charge.
Click to expand...
Click to collapse
That's exactly right. Tends to happen more on lower states of charge.
Does this mean that the charge indicator will go up after the reboot? Or maybe it will take longer to drop and the effective battery life will be the same.
Yes when this happens to me my bettery either dies extremely slow or my percent just goes up..
Sent from my SAMSUNG-SGH-I777 using XDA App
Smacdallas said:
Yes when this happens to me my bettery either dies extremely slow or my percent just goes up..
Sent from my SAMSUNG-SGH-I777 using XDA App
Click to expand...
Click to collapse
I see this too. I will be at ~40%, reboot and see 10%. Come back after a while to 12%, and it stays on 12% with like an hours worth of heavy use before going lower. If I look at the battery usage, it trends down, then drops, but stays level, then about when the trend would have been it starts dropping again.
I thought I just needed to calibrate the battery, as I just flashed a new ROM. But, it keeps doing this after a week, and several charge cycles.
Guess I'm relieved to see this weird behavior is not indicative of a problem.
Sent from my Galaxy S II (i777)
bartolo5 said:
That's exactly right. Tends to happen more on lower states of charge.
Does this mean that the charge indicator will go up after the reboot? Or maybe it will take longer to drop and the effective battery life will be the same.
Click to expand...
Click to collapse
Correct - because the gauge thinks the battery is lower than it actually is when this happens.
Attached a screenshot of the battery use with the big drop in effect.
I particularly think this is a bug and Samsung should fix this behavior.
It can't be changed without hardware alterations.
As with anything in engineering, there are tradeoffs. The positive aspect of this fuel gauge design is that it does not require ANY calibration. No wiping battery stats, no "always flash firmware at 100%" - none of that.
The negative is that in a few corner cases, it gets thrown off temporarily. This is basically the only known one.
Ive noticed this as well with both Stock and ICScreweD. I just try to reboot as least as possible.
greystealth said:
Ive noticed this as well with both Stock and ICScreweD. I just try to reboot as least as possible.
Click to expand...
Click to collapse
If you reboot at higher states of charge, OR reboot when on external power, you should not see this issue.
I just had this same problem lol. I was at 42% and when I rebooted my phone it dropped to 23%....This was a few hours after the OTA update to 2.3.6.
I had the same problem also.
-Battery would not charge to 100% ( it would charge between 97% -98%)
-Battery would drop 20% or 30% percent (when reboot).
I tried to recharge many times and cycles the battey but nothing would work.
I tried changing kernal, modem and roms . Nothing would work.
I actually thought i messed my phone up.
So i tried something that work for me.
1) i would let the battery drain till it was completely dead!
2) I would take battery out for 5 minutes.
3) put battery in and charge with phone OFF till it reaches 100%.
4) unplug charger from phone and take battery out and wait 5 minutes.
5) put battery back in and plug charger up and wait till phone marks 100% again ( This time the wait was longer to get to 100%).
6) i repeated step 5 untill finally the phone would mark 100% faster
7) unplug phone and then wait to see the battery status ( if your phone mark 99%) plug charger to phone and let it charge till it reaches 100% again. once it reach 100% reboot and repeat step 7 untill you reboot and it would show 100%.
not sure if this might work for anyone else but it did work for me. battery would charge to 100% and i don't have my phone drop 20-30 percent after reboot.
If it drops 20-30% on a reboot when the battery is near full, you may have a defective battery.
I've only seen major drops on reboot when the battery is low to begin with, never when at higher states of charge.
Doing a full discharge on Li-ion batteries puts a huge stress on it and greatly decreases the life of the battery. To get the longest life out of a battery, you want to generally stay in the medium range of charge (Don't over charge it, and don't discharge it too much). Cars like the Chevy Volt employ these techniques to encourage a longer battery life, however with phones, you get users that think discharging the battery all the way solves problems. If you want to see the true battery life that the fuel gauge averages from, press *#0228# in your dialer and check the battery voltage. Full is around 4.1v and discharged I believe is around 3.5v or so. (maybe 3.3? not sure)
3) put battery in and charge with phone OFF till it reaches 100%. <-- is probably what fixed it, and why I switch batteries instead of charging on my phone because the charger is able to control the current and voltage better than with a slight load on it (with phone on)
I'm sure that that user cut off at least 5% of his overall battery life with overcharging it like that though...
Same issues here pending the ROM I'm using.
4.2 volts is the upper limit for li-ion - and actually, it hits that at around 95% charge.
The method for charging Li-Ion:
Charge with a current limit initially - on our devices this is 650 mA.
Once you hit 4.2 volts, do NOT go above this - maintain voltage at 4.2 volts or lower regardless of current
Once current drops to around C/10 (on our devices, this is about 160 mA), shut off charging completely.
The phone's charge controller does this all automatically for you.
There's usually a timer/averaging filters in the final stages of charge termination - which is why "bump charging" can push a little extra into the battery - but this will lead to degradation in battery total capacity.
As somewhat of an extra trivia on Li-ion batteries, Motorola has apparently managed to get batteries that have nominal voltage at 3.8v and max charged voltage is around 4.3v as opposed to 4.2v.
Hunt3r.j2 said:
As somewhat of an extra trivia on Li-ion batteries, Motorola has apparently managed to get batteries that have nominal voltage at 3.8v and max charged voltage is around 4.3v as opposed to 4.2v.
Click to expand...
Click to collapse
is it Li-ion tech though?
Sent from my SGH-I777 using Tapatalk
If I keep my phone on charging even after its on 100%, it starts rolling back. As in from 100 to 99 then 98, even if its pluggen in.
Don't know what kind of a problem this is, hardware or software.
Or there's some issue with the battery.
Please help.
lakshay03 said:
If I keep my phone on charging even after its on 100%, it starts rolling back. As in from 100 to 99 then 98, even if its pluggen in.
Don't know what kind of a problem this is, hardware or software.
Or there's some issue with the battery.
Please help.
Click to expand...
Click to collapse
Sometimes I have the same problem. I dont know if it is caused of a program running in a background or what, but reboot helps
jakuburban said:
Sometimes I have the same problem. I dont know if it is caused of a program running in a background or what, but reboot helps
Click to expand...
Click to collapse
I know the reboot helps.
But usually I put it on charging at night before sleeping.
And when I wake up in the morning, the battery % becomes even less than what it was when i plugged it in.
I'm usually in a hurry then to leave for college in the morning . Can't go to college with battery % less than even 10
Thanks for the reply anyway !
lakshay03 said:
I know the reboot helps.
But usually I put it on charging at night before sleeping.
And when I wake up in the morning, the battery % becomes even less than what it was when i plugged it in.
I'm usually in a hurry then to leave for college in the morning . Can't go to college with battery % less than even 10
Thanks for the reply anyway !
Click to expand...
Click to collapse
Maybe You have some program that syncs something all the time. Did You try to turn off data and wifi. You can always check it if the reason is the hardware or Software. Just make a backup of Your whole ROM, delete the data and leave the phone over night. I hope it is only software problem.
EDIT: Does Your battery go hot while charging? Oh, and try to wipe battery stats
jakuburban said:
Maybe You have some program that syncs something all the time. Did You try to turn off data and wifi. You can always check it if the reason is the hardware or Software. Just make a backup of Your whole ROM, delete the data and leave the phone over night. I hope it is only software problem.
EDIT: Does Your battery go hot while charging? Oh, and try to wipe battery stats
Click to expand...
Click to collapse
Yes, my battery does get hot while charging.
And I did wipe the battery stats but its of no use.
lakshay03 said:
Yes, my battery does get hot while charging.
And I did wipe the battery stats but its of no use.
Click to expand...
Click to collapse
Maybe there is really some program that is causing that. I had this problem rarely so I never cared. I had one program called Batterymonitor or sth. like that and it was the reason. Do You have such a program, that shows Your battery level or temperature?
jakuburban said:
Maybe there is really some program that is causing that. I had this problem rarely so I never cared. I had one program called Batterymonitor or sth. like that and it was the reason. Do You have such a program, that shows Your battery level or temperature?
Click to expand...
Click to collapse
Yes, I have setcpu and rom toolbox.
But would these applications really cause this problem?
Sent from my X10 using XDA
The x10 charges the battery to full then if still plugged in it will stop charging until batt drains to set level ,then will charge to full again and over and over all night. X10 wont over charge batt when left plugged in. Kernel/bootloader handle this. There is an app current widget that can log charge levels.
EDIT: I had a tip on charging here but removed it after further research read more about batt here..
http://forum.xda-developers.com/showthread.php?t=871051
ToledoJab said:
The x10 charges the battery to full then if still plugged in it will stop charging until batt drains to set level ,then will charge to full again and over and over all night. X10 wont over charge batt when left plugged in. Kernel/bootloader handle this. There is an app current widget that can log charge levels.
EDIT: the best tip I usr for battery life is, let batt runout until phone shuts off, then pull batt, then plug in charger, then replace batt into phone, then phone will boot, enter xrecovery on first boot and wipe batt stats. After wipe while still in xrec pull batt then unplug. Now plug in phone then insert batt. Phone should boot in charge mode( big batt icon only on screen) dont start phone untill light green for 1-2 hours to get full charge . I do this about once a month, when phone starts to shut off around 15%
Sent from my X10S using XDA
Click to expand...
Click to collapse
As mentioned above as well, this is normal. After charging to 100%, the phone stops battery charging, and will activate charging again only when battery falls a bit (say 97%). Also, battery heating while on charging (and also when using the phone continuously while playing a game) is normal. Relax.. your phone is fine
@ToledoJab
I am having the same issue with battery... phone switching off at 15%, even at 22-23%, when playing a game or something. But switching it back on, and leaving it idle, phone might run for another 2 hours. So it is the extra load while running a game that the phone cant take any longer (i remember getting the 15%,10% and 5% reminders earlier while playing games)...? Does the battery calibrate method actually help in your case? does it go all the way down to 0% or 1% before shutting down.. ?
I just did this after posting that. And yes my phone reported warnings @ 25% 15 10 5 and then shutdown @ 1%.
This way is like reconditioning an old rechargeable ni-cad batt.
All this does is completey drain batt then, with least amount of drainage (phone on, apps& radios running) allows battery to full charge.
There is also a way called recalibrate battery. But this way over charges the batt.
EDIT: I think the phone load will effect reported batt left. I think batt gage use average loads to estimate remaining power. Meaning games, full brightness of LCD, radios -3g -GPS -WiFi -Bluetooth will use more than avg power
edit 2: I found this thread also has some very good points and links. after reading this i will not intentionally take my batt to 0%. I hit 0% about 1-2 times a month on accident as it is. i will just make sure when i do go 0% to wipe stats (dont know if it helps or not) then preform a long (overnight) full charge with phone off.
http://forum.xda-developers.com/showthread.php?t=1445698
SORRY for ranting on about this, i thought i was smart but i am still/always learning.
From my XPERIA X10S v8.2 on kCernel @ 1.19ghz
Hi everyone i have been using wifi 5.0 about 3 months now it satisfied me enough and i am sure will continue. But the only issue which makes me unhappy is when i am gaming or using gps battery finishes rapidly. I would like to learn when to charge the device is 25% ok and when i am using it on charge even when its full is it bad for the battery life?
Yes you should unplug it when it gets full.
Sent from my YP-G70
durukankurum said:
Hi everyone i have been using wifi 5.0 about 3 months now it satisfied me enough and i am sure will continue. But the only issue which makes me unhappy is when i am gaming or using gps battery finishes rapidly. I would like to learn when to charge the device is 25% ok and when i am using it on charge even when its full is it bad for the battery life?
Click to expand...
Click to collapse
don't leave it on the charger longer then 20-30 minutes after it reaches 100%, any longer can be damaging to the battery if done repeatedly.
Wish these chargers were more like the motorola ecomoto chargers that cut off charging automaticaly once the battery hits capacity.
daniel644 said:
don't leave it on the charger longer then 20-30 minutes after it reaches 100%, any longer can be damaging to the battery if done repeatedly.
Wish these chargers were more like the motorola ecomoto chargers that cut off charging automaticaly once the battery hits capacity.
Click to expand...
Click to collapse
Thank you for your answer but every time i am charging it over nights i am always turning it off and go to sleep what i want to say i cant wait to be 100% then sleep is there any app to stop charging when its fully done. And isnt it ok while gaming o keep the charger cuz u know after playing 1 hour of fifa12 battery nearly going dead? thanks again.
Mevordel said:
Yes you should unplug it when it gets full.
Sent from my YP-G70
Click to expand...
Click to collapse
So you mean this devices are not made for using on charge like laptops?
durukankurum said:
Thank you for your answer but every time i am charging it over nights i am always turning it off and go to sleep what i want to say i cant wait to be 100% then sleep is there any app to stop charging when its fully done. And isnt it ok while gaming o keep the charger cuz u know after playing 1 hour of fifa12 battery nearly going dead? thanks again.
Click to expand...
Click to collapse
stopping charging has to be done within the charger itself, so no there is no app that can stop it, plus apps couldn't do anything when the device is powered down anyway.
An hour of a game kills your battery? I can play atleast an hour probably closer to 2 of angry birds and thats from less then 30% and i'm on the 4.0 player which has a much smaller battery, sounds like you've got some battery drain issues to work thru.
daniel644 said:
stopping charging has to be done within the charger itself, so no there is no app that can stop it, plus apps couldn't do anything when the device is powered down anyway.
An hour of a game kills your battery? I can play atleast an hour probably closer to 2 of angry birds and thats from less then 30% and i'm on the 4.0 player which has a much smaller battery, sounds like you've got some battery drain issues to work thru.
Click to expand...
Click to collapse
yeah u are right about apps no way any app to work when the device off.
I mean maybe 1h and 20 min. with 50% brightness on and i guess fifa use more data than angry birds when ur playing.
anyway its important to know that i shouldn't keep charger on when its 100% because usually when i am home i was using it like that thanks again.
do u think the app called 'sense analog' may make the battery life shorter.
Something is definately wrong, because I can play MC3, which is even more intensive the FIFA on my Gplayer 4.0 for more than 1.5 hours and still have some life left, and the Gplayer 4.0 is only rated for 4/5 hrs and yours is rated for over eight!
After a full recharge, while still plugged in download battery calibration from the market, and follow it's instructions, after you do, while STILL plugged in, reboot. After a full reboot, unplug it, and DO NOT REBOOT until your gplayer completely dies (forces shutdown). Once that occurs, plug it in, let it charge to 100% (while on), leave at 100% for about 15 minutes, unplug, and use as normal. That should fix your issue, unless your battery is dying, which should not occur, even if you are abusing it badly, for awhile longer.
durukankurum said:
yeah u are right about apps no way any app to work when the device off.
I mean maybe 1h and 20 min. with 50% brightness on and i guess fifa use more data than angry birds when ur playing.
anyway its important to know that i shouldn't keep charger on when its 100% because usually when i am home i was using it like that thanks again.
do u think the app called 'sense analog' may make the battery life shorter.
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haven't seen the 5.0 screen in person but if the brightness levels are anything like the 4.0 why do you have it so high? My brightness is at like 15-20% with autobrightness OFF.
First, like many others already said, it sounds like something is wrong with your battery. I'm on a 4.0 and playing two hours of a really intense 3D game with auto-brightness indoors will bring the battery from 100% to 50% (maybe it even uses less battery).
Second, as to how to conserve battery life, Rule #1 (as others have said): definetely do not keep it plugged it at 100% for too long. Then, something I tried on my iPod and have been using ever since: keep the battery between 50% and 100%, and once a month, completely empty the battery (until it shuts down) and after that charge it to 100% (this is called a charge cycle). As to my iPod's battery, before I was using this, the battery life got shorter and shorter, but after, it didn't shorten noticeably anymore. On the computer I'm writing this on, for a couple of months, I barely followed this plan, and I lost about 5% of my battery capacity (I have a battery widget that tells me what the total capacity is) within one or two months, but then I started following it a little more closely, and actually got some of it back. Over six months later now, I have lost about 10% of my battery capacity (from the original capacity), except that I should do a charge cycle in the next couple of days, and the last time I did a charge cycle, I got about 5% of the original capacity back, not to mention I have broken rule #1 probably too often and for way too long, often for several hours
My 5.0 can play games for hours before it dies but it has strange batery levels..From 100% to 75% it goes very fast.around 40 minutes when you play game..and then on 75% it stays there for 2hours when you play game and with regular use it can stay all day on 75-70% ..after that it fastly drops to 25% and just when you thing you need to recharge it can stay on 25% forever..you can play 2 more hours of game on 25% or with lighy use it will stay all day on 25%.
Sent from my GT-I9000 using XDA
daniel644 said:
stopping charging has to be done within the charger itself, so no there is no app that can stop it, plus apps couldn't do anything when the device is powered down anyway.
An hour of a game kills your battery? I can play atleast an hour probably closer to 2 of angry birds and thats from less then 30% and i'm on the 4.0 player which has a much smaller battery, sounds like you've got some battery drain issues to work thru.
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This is not correct. NO modern device has ANY smarts in the external charger - nearly all current phones (and every smartphone on the market for the past 3-4 years) has a constant voltage 5.0 volt USB input. Modern "chargers" are not chargers at all - they are dumb 5 volt power supplies, nothing more.
Charging "smarts" are handled by electronics in the device itself and have been for ages. (For all practical purposes, the Player 5.0 is a Galaxy S smartphone minus the cell radio...)
The kernel and charger hardware automatically handle charge termination and restart themselves. This is, for example, why Daily Driver can charge at higher current levels than stock at low battery (but drop the current as the battery reaches nearly full in order to stress the battery less).
Oh, as far as battery percentage display - the method used for estimating state of charge on the Players is abysmally primitive and highly inaccurate.
Battery Charging YP-G70
I always charge my completely standard YP-G70 overnight. As I understand it, the charger only provides voltage and in this case it's 5vdc. The device's battery management software draws the required current to charge the battery. If you install 3c's "Battery Monitor Widget Pro" you can see a charging graph showing the current levels drawn over the full period of charging. The charging current is stepped to control battery temperature and is reduced as the battery approaches full charge. By the time the battery reaches full charge the current draw is down to a trickle charge and will not overcook the battery. I usually leave the device switched on, which further protects it by maintaining a small load. One of the problems I have found with this device is that this charging regime, along with the fairly large capacity of the battery, mean that the battery can take up to six hours to fully charge, which confirms, in my view, that overnight charging is OK.
hanthesolo said:
Something is definately wrong, because I can play MC3, which is even more intensive the FIFA on my Gplayer 4.0 for more than 1.5 hours and still have some life left, and the Gplayer 4.0 is only rated for 4/5 hrs and yours is rated for over eight!
After a full recharge, while still plugged in download battery calibration from the market, and follow it's instructions, after you do, while STILL plugged in, reboot. After a full reboot, unplug it, and DO NOT REBOOT until your gplayer completely dies (forces shutdown). Once that occurs, plug it in, let it charge to 100% (while on), leave at 100% for about 15 minutes, unplug, and use as normal. That should fix your issue, unless your battery is dying, which should not occur, even if you are abusing it badly, for awhile longer.
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I downloaded the app but its not working i am going to charge my device like the way u said, thank u for ur advises
Entropy512 said:
This is not correct. NO modern device has ANY smarts in the external charger - nearly all current phones (and every smartphone on the market for the past 3-4 years) has a constant voltage 5.0 volt USB input. Modern "chargers" are not chargers at all - they are dumb 5 volt power supplies, nothing more.
Charging "smarts" are handled by electronics in the device itself and have been for ages. (For all practical purposes, the Player 5.0 is a Galaxy S smartphone minus the cell radio...)
The kernel and charger hardware automatically handle charge termination and restart themselves. This is, for example, why Daily Driver can charge at higher current levels than stock at low battery (but drop the current as the battery reaches nearly full in order to stress the battery less).
Oh, as far as battery percentage display - the method used for estimating state of charge on the Players is abysmally primitive and highly inaccurate.
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First of all thank you for this valuable information, thus I can keep my device on plug while i am driving and using gps otherwise on long distance its annoying to keep checking the battery while driving with gps app on.
Other think is i guess its normal but just to ask, The device becomes really hot on charging while i am gaming. What do u think?
Is there an app that takes time of your battery like today I turned on at lets say 7:00am and the battery dies at 9:00 and you forget the times but the app says how long it lasted. Is there some app like that?
Sent from my GT-I9000 using XDA
3c's "Battery Monitor Widget Pro" gives all the battery information you could ever need. A data log and graphs allow performance to be analysed over any period of time. You can set markers to indicate charger plugging and unplugging times. Hope this helps.
Sent from my YP-G70 using xda premium
durukankurum said:
First of all thank you for this valuable information, thus I can keep my device on plug while i am driving and using gps otherwise on long distance its annoying to keep checking the battery while driving with gps app on.
Other think is i guess its normal but just to ask, The device becomes really hot on charging while i am gaming. What do u think?
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Off course it will be hot..you play game which hots cpy and gpy and at same time you recharge batery which hots battery..but if battery reach 50 degrese celsius player automaticly stop recharging no matter whow much battery is full.
Sent from my GT-I9000 using XDA
durukankurum said:
Other think is i guess its normal but just to ask, The device becomes really hot on charging while i am gaming. What do u think?
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Gaming = CPU and GPU cranking at full tilt with the display on - of course it's going to get warm.
Although there are similar reports of battery issues, I haven't found anyone with the same issue. I have an SGS2 running 4.0.4 - all stock and although I'm on Orange, it's not an Orange handset. It's just over a year old.
Since being on 4.0.4, I've noticed the battery level drops when I switch it back on/reboot. It has been dropping by 20-30% but recently it's been dropping all the way to 1%. It has also taken to switching itself off with no warning (or shutdown) - I can only assume because it suddenly thinks the battery is at 0% despite what it was seconds beforehand.
As a typical example, it was charged to 100% (4200mV as shown via *#0228#). After a few hours standard use, it was around 60%. Then, seemingly when I'm doing something intensive like recording video or downloading something over a data connection, the screen goes off and I realise it's dead. I restart and the "battery critical" warning comes up - 1%. It dies again and I remove the battery for a minute, put it back, then power up. This time it says 9%. Then after a short while it dies again. So I connect the charger. After a couple of seconds, the battery charging indicator shows about a 1/3rd full. I switch on and the battery is now at 46%. Whatever the issue, reattaching the charger seems to rescue it - even if it's not back to the original level. The charge levels (in mV) seem to match the percentage.
This happened so much that a few weeks ago, it wouldn't even start and I had to wipe and reinstall everything. It does work now, but still crashes at least once a day. I'm not sure what else to do other than wait for Jelly Bean and hope that will miraculously fix the problem.
I have attempted "battery calibration" though it's a bit difficult - and I've read that it doesn't actually work anyway.
I am a noob - so please treat me like an idiot in case I've missed something obvious.
Thanks.
Dude, I believe it's time to buy a new battery.
1.Battery Calibration apps don't work(They don't do anythight good) Battery calibrates selfs...
2.I think that your battery is dead like my (Buy one it cheap)
3.And I think too that Insane gauge chip is very crazy...(You can reset it maybe helps... need flash Syiah and Get Stweaks)
I have the exact same problem, see this thread: http://forum.xda-developers.com/showthread.php?t=2062056
Tomorrow I will buy a new battery, I can tell you if this will help me out
Yup, battery calibration is a myth. Google already states that you do not need to reset your fuel gauge for ICS/JB devices. All battery parameters are automatically reset when it's 100% charge.
Sent from my GT-I9100 using Tapatalk 2
Thanks
I've ordered a new battery which I should have later this week. Let's see if that does anything useful. In the meantime, I'm attaching some battery meter screenshots to illustrate the problem.
Thanks for your suggestions so far!
xdanoober said:
Yup, battery calibration is a myth. Google already states that you do not need to reset your fuel gauge for ICS/JB devices. All battery parameters are automatically reset when it's 100% charge.
Sent from my GT-I9100 using Tapatalk 2
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No, this dont apply for us. Google stated that is useless wipe battery stats, the didnt say anything about our fuel gauge chip
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Solved
:victory: New battery installed and, 24hrs later, no crashes or glitches. My phone's as good as new. Thanks for the suggestions folks!:victory:
My battery went from 50% to 15% after a reboot.
The bizarre thing, though, was that I watched it increase from 15% to 20% charge even though it was not plugged in.
Weird...
Mr Anderson said:
My battery went from 50% to 15% after a reboot.
The bizarre thing, though, was that I watched it increase from 15% to 20% charge even though it was not plugged in.
Weird...
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fuel gauge.