Picassowifi - CM12.1 - Battery % decreasing while charging until reboot - Galaxy Tab Pro 12.2, 10.1, 8.4 Q&A, Help & Trouble

Hi,
Situation as follows:
15% battery - "low battery" notification
14%, plug in charger
13% WTF -> Settings app shows,that tablet is charging
Reboot (this fixes the problem)
21%
The thing is:
I do not understand why this is happening. It COULD be related to CM12.1 or to the tablet (hardware). I am currently on the nightly from 8th February, but this is happening for a quite long time now...
Any ideas?
Thanks

Tablet hardware, look for reseating battery or replacing for our tablet on YouTube, mine does same from stock to cm13
Sent from my Nexus 6P using Tapatalk

Getting the same. The battery charge level is going crazy. Sometimes 15% and decreasing switch off tablet, unplug, replug boot, it now shows 60% (rom is in line with kernel)
So I'd say hardware kernel interaction when true level goes under 20%. Also make sure to have a proper charger and cable.
I seem to have it less often with stock rom.
Nothing to worry about when you know it..

Hi,
I tried to clean flash cm12.1 with opengoogleapps. Reporting back what happens

Hello,
do you have any updates on this issue? I experience exactly the same...tablet turns off, because of low battery, when I turn it on directly afterwards it claims ~30%-50% battery left.
I tried recalibrating the battery without any visible effect.

I do not know what helped....
I did 2 things:
Change the Micro USB cable to a high quality one (I use the one, which shipped with my paperwhite)
I use a different charger ( http://www.amazon.de/gp/switch-lang...ef=cs_switchlang?ie=UTF8&language=en_GB&psc=1 )
This resolved the issue for me (I did try a lot. Maybe I did clean caches in recovery).
Hope this helps !

Related

Full charged Battery drain out within 2hrs

Here is the problem :-
1. Full charged batttery (NEW) drain out within 2 hrs
2. Exec in standby mode, got heat (warm)
3. While charging, i put it on standby mode, few second later it wake up it self.
4. while open the cover, usually have to press the power button it's only wakeup, but this time its on every moment..
Tried solution :-
Problems occured while using gprs for internet, it hang so soft reset it... after soft reset everything is fine, but the battery drain out so fast... and the device is WARM...
Flashed back to original rom (o2) - still the same
Tried flashed to WM6 - still the same problem
i got 2 x batteries... the problem still the same (not the battery problem)
anyone can help out with this?
thank you so much
try using 2А battery charger .. I have had similar problems that I decided to convert the old computer power supply for charging purposes
I was going to say your battert's old and dead, but since you said it was independent from the battery, now I think the drain and the heating might be explained by a short circuit somewhere in the non-vital parts of the device, or a malfunction of the power control circuit, causing constant drain and heating up the battery.
As for the device beng constantly on, have you checked the power settings? If those are all right, they can stil be attributed to the faulty power controller...
I suggest you take it to a repair shop(since your ROM-flashing probably voided the warranty, so the provider will just turn you away...), they might be able to do something with it.
I suggest you check back later to see if someone more knowledgeable than me offered confirmation or another opinion...
Good Luck!
theres only one thing i can think of: Turn off your wifi when you dont use it Xp Thats the only reason i can think of when your device gets warm and the battery quickly drained ; D
maicrosoft said:
theres only one thing i can think of: Turn off your wifi when you dont use it Xp Thats the only reason i can think of when your device gets warm and the battery quickly drained ; D
Click to expand...
Click to collapse
I don't think so...the wifi doesn't use nearly enough power to heat up the device or drain the battery that quickly. Even with all wireless options enabled, but screen brightness set to minimum, the battery lasts approximately one and a half hours for me.
I think the quick drain and heating is caused by either a non-critical short-circuit or a faulty power controller circuit...
maybe you gor ripped off. what kind of battery did you buy?
The battery that im bought recently
same as the old one.
PU16A Li-ion Polymer Battery 1620mAh
everything i tried to save the power
everything off except the phone, the backlight set to the lowest.
im charge it with my charger instead of USB port from computer

[Q] Instant discharge.

So, I'm on my Evo today, playing a game (Air Strike). My battery is at 93% when I picked the phone up to play, and the phone is plugged in. Suddenly, with no warning what-so-ever, my phone shuts off. Of course a mini-freak out and many "wtf's" ensue. No warning, no signs, even the led went off. I pulled the battery, put it back, then plugged the phone in again. After that it gave me the blinking light indicating the battery was too low to turn on. After a few minutes charging she came back on and battery was at 5%.
How the hell does a battery go from 93% to 0% in less than 5 minutes, and give no warning at all?? Anybody else ever have this problem?
Wow I've have never heard or that happening before. Maybe a glitch in the battery stash? Did it take awhile to charge up to 100%? Can you reproduce the issue again?
Sent from my EVO (CM 6.1.1) using XDA App
I had this problem with my older phone once. The battery itself may have a problem or your phone is not getting charged properly.
Try These :
1) Try charging the phone overnite from the Wall charger (Not through USB of your computer)
2) If the above does not work, and you have access to another evo battery, then try using that.(try using a friends battery and charger for a day. ) (Ofcourse needless to say the charger and battery must be for Evoonly )
In my case, my phone started working fine again after getting my battery & charger replaced.
Probably shouldn't worry about it too much just yet. Could be something as simple as your battery meter was mis-calibrated. The meter itself is software so it can easily be wrong/off. If it continues you may have a bad battery.
Sounds to me like something is wrong. Did you just get the phone or have you had it?
Idk... The phone had been plugged in for most of the day (hadn't gone anywhere. Lazy day lol) And like I said, the led went completely out as well.
Haven't had the problem again, so we'll see I guess....
Mark_Hardware said:
Idk... The phone had been plugged in for most of the day (hadn't gone anywhere. Lazy day lol) And like I said, the led went completely out as well.
Haven't had the problem again, so we'll see I guess....
Click to expand...
Click to collapse
I've seen some posts about the Evo battery shutting off the charge when its being used. Were you using your Evo while it was charging?
If the battery doesn't seem to be giving you percentages that are accurate, you might want to recalibrate your battery.
Common misconceptions sticky (Evo Q&A) said:
Battery recalibration (Thanks to Cyanogen for this and to fachadick for bringing it to my attention).
If you're experiencing higher than normal battery drain, try the following:
1. Charge the phone to full battery; let it keep charging until the battery says it is fully charged. Do not just wait until the light is green, it isn't always fully charged, causing a lot of inaccuracies. (You can check by going to: Settings -> About Phone -> Status -> Battery Level = Full.)
2. Boot to recovery and wipe battery stats.
(To have the most accurate of battery stats, reboot the phone immediately after wiping the battery stats and wait for your ROM to boot completely to the desktop. Once your entire boot is done and you have full access to the phone, go ahead and pull the charger and continue.)
3. Do not charge the phone until after draining the battery completely, resulting in it automatically shutting off. Take out the battery, and keep trying to turn on your phone until it will not turn back on at all.
4. Recharge the phone completely and then use as you normally would.
This is a method that has been proven to work, I am sure there are other ways. My battery lasts longer after doing this and the reading is much more accurate. It might be advisable to do this after every ROM install if you want the most battery life and most accurate battery reading by the phone's software.
Click to expand...
Click to collapse

[Q] Battery worn out?

Hello,
My desire, after:
an inability to restore nandroid backup
a possible corrupted sd card
a usb brick and inability to mount some nand partitions
and finally succeeding in fixing it, now using/running:
2.29.405.5 stock rooted rom
a new sd card (samsung 16GB class 6)
clockworkmod 2.5.0.7
s-off
seems that has battery issues. When it reaches below 30%, it drains a lot faster. In example few minutes ago, the battery was below 30% level and after sending a couple of sms messages the phone, without the "Connect the charger" indication shut down. Not even the battery icon was red.
What should I do?
After flashing the above ROM I ran an app called battery calibration (could this be the culprit?).
I haven't experienced such problems before the whole mess mentioned above.
Thank you for your time.
Well, it seems to me like a "classic" battery meter calibration issue.
TVTV said:
In order to calibrate the battery meter - FYI the battery itself cannot be calibrated, as Li-Ion batteries have a very low memory compared to old Ni-Cd etc. batteries - you have to go through the following procedure:
1) charge the battery to 100%;
2) let the battery discharge until the phone shuts itself down;
3) plug the wall charger into the phone, boot the phone up then charge the battery to 100% without interruptions.
If the above procedure does not yield the expected results, you can try fully charging the phone (LED showing green) with it completely turned off (after completely draining it). Again, the charging procedure should not be interrupted.
Source: personal experience - had to do this twice after installing new ROMs, as the phone was shutting down at ~14% (working like a charm now).
Regarding the matter of battery wear because of complete discharges, Li-Ion batteries do indeed have a lower cycle count than old-school batteries, but the standard charge/discharge number a Li-Ion battery can take is ~350, so you can't damage the battery pack by doing a full cycle per month (required to keep the battery meter accurate).
Good luck!
Click to expand...
Click to collapse
Did this work you mate? I have the same issue with my year old batter now... the phone shuts down @ 40% without any warning... and when I charge it, it starts from 0% and as soon as it hits the 58% mark, it jumps to 100% by itself... and i cant seem to figure out what the hell could I do to fix it... I tried calibrating the battery using the awesome method described here http://forum.cyanogenmod.com/topic/11823-battery-calibration-thread 3 times and nothing changed...
bump bump.. i really need help on this guys... :/
Sent from the infinity and beyond...
Weird that after calibration you still get that kind of issues, does this only happen on your current ROM? I have the latest CM in my desire and everything works just fine... Maybe try another ROM if calibration doesn't work to see if it's a hardware or software issue
i actually had issues with MIUI first.. the phone randomly shut down by itself but when i turned it back on, it was perfect... then i switched back to Oxygen and while everything was fine, suddenly one day the phone died at 40% :S and from that day on the phone charges to 58% and then instantly jumps to 100%... and as soon as it gets to 40% it shuts down itself... i guess i need a new battery but i wanted to see wether i can fix this one somehow so i can use it till the new one arrives...
Sent from the infinity and beyond...
same problem
i have the same problem
my phone turns off at 20% battery
calibration does not help....
and battery is not bad - it works fine
i'm sure its the problem with calibration
kshitijgandhi said:
i have the same problem
my phone turns off at 20% battery
calibration does not help....
and battery is not bad - it works fine
i'm sure its the problem with calibration
Click to expand...
Click to collapse
phone turning off at 20% is fine mate because thats the battery guards against any damage
most of the phones ( smart phones) switch off at 20% as going lower can damage the System .
It shouldnt normally..It's supposed to work fine upto 5%
Have a look at this, it worked for me (but you need a compatible kernel, most AOSP are so)
http://forum.xda-developers.com/showthread.php?t=765609

[Q] Phone stops charging at 60% Help! (not your typical battery problem)

OK for starters, I researched this for last week or so before posting.
Symptom:
My GNex over the last month has crept backwards from 100% full charge to 60% full charge.
In settings>battery you can see it switch from 'charging' to 'not charging' when it goes from 60-61%.
This is not just a % reporting issue, it is really only holding 60% of its total charge and dies accordingly.
Medications:
-I have run AOKP since like B25 but have switched back and forth between stock AOKP, now on B40.
-I've tried different kernals.
-I always wipe clean no dirty flash.
-I have switched chargers and charger cables.
-Tried to charge from the wall, the usb on pc, in the car.
-I have tried both of my batteries (different mAh) in this thing and it only charges both to 60%.
-I know that clearing the batt stats do nothing but have tried anyways.
Summary:
The phone has charged the battery less and less over the last month, no matter what the rom or kernal or factory reset /or cable or charger /or battery.
Is there something I am overlooking?
Is anyone else experiencing something similar?
Do you think it is software or hardware?
Thanks for looking and any suggestions!
Sounds like hardware related issue if you ask me. Maybe some sensor in the charging module is fried/f'ked. Franco kernel settings app have options to limit how much you can charge the battery.

Battery always showing 0% and shutting down when unplugged!

One fine morning my Note 10.1 2014 battery started showing as 0% and will not 'charge' (i.e., percentage will not rise). As a result, the tablet has to stay plugged-in always to use it (just like a desktop computer). The moment it is unplugged, it shuts down in 1 or 2 seconds. Tried different chargers/cables/flex cables/new battery/uninstalling/reinstalling/warming...& what not. But nothing solves the issue. I came to know that the battery is actually holding/taking in charge which is evident from the fact that the tablet runs without being plugged-in in the recovery/TWRP mode! It seems just that the android OS is not recognizing the charging. Any help would be appreciated. Thank you!
Is the battery really good? The boot menu uses a lot less current than normal boot up operation.
Otherwise you're looking at a possible mobo failure. If it has a charger pcb it could be that.
A Samsung Experience center at a Best Buy might be able to sort it out for you.
blackhawk said:
Is the battery really good? The boot menu uses a lot less current than normal boot up operation.
Otherwise you're looking at a possible mobo failure. If it has a charger pcb it could be that.
A Samsung Experience center at a Best Buy might be able to sort it out for you.
Click to expand...
Click to collapse
It is not the battery, I am pretty sure! As for the other possible causes suggested, it seems Samsung considers the product too 'old' now to look into/offer any service/parts replacement. Anyway, thanks for the quick reply!
I got the same experience. Recently installed LOS14.1 on my Samsung 2 7.0 and battery just drained and inspite charging it overnight never recovered. I think it's really the LOS 14.1. Now I cant even boot it up anymore.
tom.cruiser said:
I got the same experience. Recently installed LOS14.1 on my Samsung 2 7.0 and battery just drained and inspite charging it overnight never recovered. I think it's really the LOS 14.1. Now I cant even boot it up anymore.
Click to expand...
Click to collapse
Please do post, if you find a solution!
I strongly doubt that LOS14.1 (lineage-14.1-20210320-UNOFFICIAL-lt03lte) is the culprit as my old P605 still works with the unchanged battery.
Once charged it lasts for quite some days (usage 0.5h/day) without problems.
It's always in flight mode and mostly WLAN is shut off.
It's not that cuz of an OS it's the old battery problem....
Same thing happens to one of my cellhphones.
I charrge it to 100 % while it's turned OFF then tomorrow I turned it on and battery is at 1 %, 0 % and shuts off.
It's just old Li-Ion battery which needs replacement.
After having replaced the battery with a new one with about 50% charge the discharged P605 would only recharge to the level of the original charge. It returned to normal behaviour after charging once with the original 5v/2A charger and the original cable with the second GND contact missing. If the latter did the trick, with most cables u can't tell whether the contact is wired to GND or not.
But in the days of miniUSB, the second GND was sometimes used to put the device in charge or pc connection mode, by swapping cables.

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