I have a problem with the battery on my SK17i (MFG date 11W30).
My phone is stock - Locked Bootloader, stock launcher and so on.
The problem I have is that when the battery level comes to about 20%, it jumps from 20 to 15 and then to 1% and shuts down, this in a timeframe of about 5 minutes.
Anyone had a similar problem and/or a solution to this problem??
almost same, battery callibration not works... full phone reset with 100% seems to work, but note - phone shold be charget from android, not offlined!!! in offline mode hardware seems to use another voltage for chagre and after reseting or callibrating you would have some hours of 100% charge indicator... any way i'm sick from that problem... with new .58 firmware my best result is 10%... then drop to 1%... no callibration or reset helps probably problem in battery hardware or battery driver software.
And one last thing I've noticed: if you use phone in lite mode, when it stays in idle for a long time, then drops comes often... but in case if you stress your phone with some apps and calls then drops are not so often, and battery goes smooth from 100 to 1... so probably main problem in battery itself.
ps. sorry for misstakes, text was writed from phone.
still no solution for the battery drain?
Did somebody figure out if it is based on the kernel itself (I myself have the latest firmware, but still no better battery life, and yes everything off except cellphone coverage) or some program running in the back that isn't visible?
solved!
found solution for avoid battery drop from 20-30 to 1% percent. (personal data would be lost)
1) discharge phone to 0% or 1% (this is !!!important!!!, because offline charge should be full, I spend several weeks in (_!_)-pain before catch a moment)
2) turn it off
3) wait for 2 hours (probably 1 hour would be enough too, phone charges to 100% dam fast , but to be sure lets say it would be 2 hours)
4) do not remove charge cable (this is voodoo thing, not sure if it is important), boot up phone
5) go to "Settings -> Privacy -> Factory Reset" (not sure that it called exact, but be sure that all data would be erased)
6) phone would start to erase data and go to reboot, in chat moment remove charge cable (this is voodoo thing too, not sure if it is important)
7) after boot up battery should be ok!
as I understand problem in locked firmware, and if your bootloader is locked, then any battery calibration software with root access would be loosed during reboot, so you need "SE native" method
battery drain
Hi.I have had this same problem whit the battery,the reason for this was that the battery was not format properly during first view chargings.In result I just clear the battery cache for couple of times every time the baterry was draind and recharge it again.My battery show every % now,so that was the resolusion.I hope you guys anderstand my english.
Related
Been using the g tab since December and have always been impressed by its battery life. Only issue was the battery meter never seems to reflect the true battery level. I had times when it just shut off without warning with the battery meter at 100% while other times, it drained rapidly to 0% within 20 minutes.
I know the general fix is to delete battery stats with recovery (which i have been doing frequently) but that still doesn't quite solve the problem. As such, i decided to test the exact battery life of the tablet. I am quite shocked at just how good it is o.0.
I've had a (1hr 17 mins) video looping with wifi on and connected for exactly 9 hours now as i am typing this. The battery meter still reads 100% but i think it will turn off/drain rapidly soon.
I am on TNT Lite 3.1.4 btw (old but gold).
Update: Tablet just shut off after 10h and 56 minutes on video loop + wifi. Video was stored on tablet memory.
Issue: Battery meter never drained and was 100% till death (i plugged in and rebooted and it read 100%). I had just wiped battery stats before doing this experimental run. Any suggestions to deal with the battery meter issue?
I had a similar problem with another tablet after wiping the battery stats and still don't know if that was the issue or not. From my recollection, you were supposed to discharge the tablet completely and then delete the battery stats (or was it charge it completely?). Is it possible you deleted it in the wrong state, so it thinks an empty battery is full? I always wonder if I might find a similar fix for the other tablet or if the charging hardware simply failed (not a gTablet -- a flytouch2 type device).
wd5gnr said:
I had a similar problem with another tablet after wiping the battery stats and still don't know if that was the issue or not. From my recollection, you were supposed to discharge the tablet completely and then delete the battery stats (or was it charge it completely?). Is it possible you deleted it in the wrong state, so it thinks an empty battery is full? I always wonder if I might find a similar fix for the other tablet or if the charging hardware simply failed (not a gTablet -- a flytouch2 type device).
Click to expand...
Click to collapse
From what I've read about calibrating the battery on other devices (specifically in the EVO forums), you're supposed to charge it until it's full, immediately wipe the battery stats, run it until it's dead without turning it off at any point, then charge it until it's full with the device off. Turn the device on and it should be properly calibrated. I'm not sure if this will fix your problem, but it's worth a try.
If that doesn't work, you could try flashing a different ROM and see if the problem persists (backup everything in clockworkmod first, so you don't lose anything if you want to go back to that ROM). If the problem goes away, it's probably an issue with TNT Lite 3.1.4. If the problem persists, it's probably an issue specific to your gTab.
Thanks guys. Ill give it a go.
Sent from my GTablet-TnT-Lite using Tapatalk
raphenucleus said:
From what I've read about calibrating the battery on other devices (specifically in the EVO forums), you're supposed to charge it until it's full, immediately wipe the battery stats, run it until it's dead without turning it off at any point, then charge it until it's full with the device off. Turn the device on and it should be properly calibrated. I'm not sure if this will fix your problem, but it's worth a try.
If that doesn't work, you could try flashing a different ROM and see if the problem persists (backup everything in clockworkmod first, so you don't lose anything if you want to go back to that ROM). If the problem goes away, it's probably an issue with TNT Lite 3.1.4. If the problem persists, it's probably an issue specific to your gTab.
Click to expand...
Click to collapse
I've been having an issue where my battery show that it is discharging but then it abruptly shuts down when it hits ~50%. No warning of low battery voltage.
I'll try this calibration and report back with results.
Update...8 months on.
My G tablet is now running Flashback 10.3 (finally HC is stable enough).
Battery still does not reflect drain, stuck at 100% every time. (i've been told its a kernel issue)
On Flashback 10.3: Looping a youtube video (1hr 14 mins) with HD on, sound off, wifi on, brightness set to automatic in a dark room. Tablet died after 9hrs 21mins.
This is 1.5 hours shorter than the result i obtained when i looped a internal storage video, wifi on, brightness automatic, sound off 8 months back on TNT 3.1.4 (froyo).
I'm pretty impressed given the 3700mAh in our device (compared to most 5000mAh tablets). Anyone done any tests? Do share.
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?
Click to expand...
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?
Hi,
My phone goes to 99% charge without a hitch but wont go to 100%
At 99% battery my i got 4207mV
All i did was to follow the instructions on this thread
http://forum.xda-developers.com/showthread.php?t=1198333&highlight=battery
Before that 100% is no problem and after that stuck with 99%
and one more thing my phone shows me messahe on lock screen that phone is fully charged unplug but when i see the battery its just 90%.
From 90% onwards i see unplug message.
I am using Alien#4 ROME and Atrix-GB-Kernel-0.1.7-ext4-sv Kernel
Any suggestions or i am just over thinning ?
Same thing continually happens to me. I've done all the "fixes" and suggestions..and it still does it. Sometimes it goes up to 100%..sometimes 95%. All's I ever do is reboot with the phone still plugged in and "usually" (not always), it boots up showing 100%. IMO there is something with GB that is causing it..cuz i've noticed it on every rom i've tried (Alien, Cherry, CM7 etc)..
=>
Same here. It won't charge past 89%, and it did the same in the past at 92/93 %. I fixed it with a hard reset, but don't feel like doing that again.
Sometimes when I disconnect the charger, the phone still acts as if the charger is plugged in. Only solution is to reboot.
I will try to reboot with the charger connected to ser if that fixed my battery metter. Thanks for sharing.
Whipon said:
Same here. It won't charge past 89%, and it did the same in the past at 92/93 %. I fixed it with a hard reset, but don't feel like doing that again.
Sometimes when I disconnect the charger, the phone still acts as if the charger is plugged in. Only solution is to reboot.
I will try to reboot with the charger connected to ser if that fixed my battery metter. Thanks for sharing.
Click to expand...
Click to collapse
Another thing i've done (as per xploited's thread), is when phone is fully charged reboot the phone (while still being plugged in) and pop out the battery right away. The phone will reboot with a ? (looking for the battery)..then pop the battery back in and it will usually say 5%. Leave it charging until it reaches 10% (i've never gotten it to go higher)..at which point unplug and reboot your phone.
Just read this interesting tidbit from another thread:
"Recently i have tested "Battery left widget", a market app.
When i go in "Summary" and "History" and "Sensor usage" option, i see this :
Sensor is activ "all the time" since last "plug on wall".
Sensor is in use by "Android System"
I have test this :
Charge 100% (and calibrated with CMW wipe battery or "BatteryCallibration" app before), unplug, and REBOOT.
This manual reboot stop "Sensor" activated by recharg.
After this simple action, battery drain has disapeer, and "sensor" activity too
Battery drain is the same than Froyo, 1 day in suspend mode, 1 hour game, 1 hour web and 15% battery left. It's magic !
I think, System detect the wall plug, and activ "something" in system nether desactivated after unplug.
Reboot is the only way to stop this sensor, and baterry drain"
So basically..after fully charging your phone..reboot with it unplugged and it should eliminate some of the drain people are experiencing. Until a new version of GB comes out..I think we'll all have to deal with these weird battery issues.
same issue here with alien 4
it was all good i used to get a very impressive battery life. but after i put alien 4 ( before that i used first ken's release of GB ) the battery life is worse and it doesn't charge till 100% and the drain from from 98 to 90 is very quick compared to other drains in range of 10%
With the 1% mod your phone thinks that the battery is at 100% while at 95%... like 94% would be 90% so it would take a while to get to the full 100 because it doesn't want to overcharge the battery and damage it. Also don't worry about the 100% 4200mv is the normal capacity of the battery's cells aslong as it that or over its still fully charged
Sent from my MB860 using XDA App
As mentioned above, you're fine if you're at 4200mv. Ymmv because of battery. And the juice is calculated by software. No chip on the battery. If your mv are significantly under 4200 mv then you need to calibrate. If it's close or over, quit worrying and rebooting and just use it. Sometimes my phone flies through 90's but after that it settles down and everything is normal. If you keep trying reset battery stats your battery is not going to calibrate because you're not discharging enough for the software to figure out more accuracy with numbers it gives you.
I voided my warranty.
Without any thing doing battery is back to 100% charging
Yep, what the other posters wrote is right. To summarize:
1. If you are at 4200mv, stop worrying what % it shows, because you are at full charge.
2. Android software tries to keep the time when battery is @100% to a minimum, because fully charging and completely discharging on regular basis hurts the battery.
3. The battery meter is lying to you, and it's not such a bad thing, read the article -
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
I love u guys.
No Homo OFC
Hey all
Well this problem has been persistent for a while now, even when I was on my phone pre root and pre custom ROM.
Phone is with Optus in Australia. The problem is sometimes when I reboot the phone(mostly when its at about 50 - 60%) and it starts back up, I end up on about 10% battery and it insist I plug the charger in. All I did was restart the phone and lost 40% battery.
The odd thing is the battery slowly ramps back up, 11%, 12%, 15% and so on, sometimes back up to about 35%
What the hell could be the cause of this? if I don't restart the phone I don't have a problem...
Heres a picture to show what I mean
Does the phone hang at bootup or shutdown? No sign of the CPU chugging away on either?
toast7989 said:
Does the phone hang at bootup or shutdown? No sign of the CPU chugging away on either?
Click to expand...
Click to collapse
Nope. Takes about 5 seconds to switch off and about 10 seconds to switch back on.
SargeRX8 said:
Hey all
Well this problem has been persistent for a while now, even when I was on my phone pre root and pre custom ROM.
Phone is with Optus in Australia. The problem is sometimes when I reboot the phone(mostly when its at about 50 - 60%) and it starts back up, I end up on about 10% battery and it insist I plug the charger in. All I did was restart the phone and lost 40% battery.
The odd thing is the battery slowly ramps back up, 11%, 12%, 15% and so on, sometimes back up to about 35%
What the hell could be the cause of this? if I don't restart the phone I don't have a problem...
Heres a picture to show what I mean
Click to expand...
Click to collapse
You can try to claibrate your battery with the app battery calibrator or following these instructions (i would recommend trying both). If it didn't help, maybe send it back to Samsung?
I would charge battery 100% .
Wipe battery stats via CWM recovery .
Charge phone again to 100% and use it for three days thats enough to recalibrate SGS2 .
Still problems you have to try another battery first .
As warranty is now void you will need to unroot restore firmware and zero custom rom counter if you need service .
jje
this is normally. i have the same. just wipe battery stats, off the phone and charge to 100% , unplug the cable, remove battery for 1-2 mins and charge to 100% again.
if i were you, i'll just flash using odin and after first boot do *2767*3855# and let it do couple of charge cycles.... that is full charge use it full charge use it.....
and stay away from any restores for couple days
remember that code will wipe you internal storage
I had the same problem before
but now it is ok
i use battery calibration by neema from market
then watch the voltage it should be 4.200
or slightly less or more then calibrate your battery
I noticed that this was occure after heavy use
and then reboot
after I charged my phone with SE vivaz charger
6 months with sk17i...
6 months with pain in (_!_) about battery indicator...
let me describe situation for those who have no such problem:
battery indicator lives with its own life after 30%... mainly in good days it drops from 20% to 1% but in general picture is not so smooth... I have some days when 45% becomes 1% and so on...
Trying to figure out source of the problem I've started to wipe battery status (any calibration software with root or CWM recovery option), but no luck... (yes, I should mentioned that I've also produce full reset of battery status with 100% charge in offline, then removing for 5-10 mins and charge rest of %) and that is definitly - not working... After full discharge without reboot or power off it is not 100% possibility that next discharge goes smooth from 100% to 1% it could breaks again on 15% or 20% or even on 40%.
I was thinking that problem in battery itself and also change it with new one but picture still the same.
According voltage values regular battery with ~1200 for "mini pro" should show from 4.1 to 3.5 values and it does! but battery indicator shows something else...
So question to community: do we have epic persone who can solve that problem?
P.S. as you can see bootloader is unlocked so no worranty availiable... only hope for community.
Batterystats file does not include battery information, it's about the battery usage info and that file is created again every time, that you fully charge battery.
My friend had this strange situation like your's, He had neo.
He visited service center & solved the problem.
I recommed you take it to the service center.