Develop Bugs

[SOLVED] NOTE 10.1 2014 edition - fake battery percentage / battery drain issue

hi guys,
I have learnt a lot from xda and had been using this site for all of my android issues and mods. This is just fabulous.
So, I have been using my Note 1 0.1 since a couple of weeks and it's battery was acting in a funny manner.
PROBLEM
Sometimes it played well down to 60% from a full charge , then down to 15% in a minute and then down to 4% in next 5 minutes. Then i would restart the tablet and watch the battery suddenly having around 35% battery. THIS WAS SO WEIRD.
I used many battery calibrators from play store but none of them worked.
SOLUTION
And then out of frustration, I pulled out the back cover, took out the battery connector, and then placed it firmly, back to its place. switched it on used it for couple of minutes, and noticed the battery percentage. restarted, YAYY! same battery percentage. used it again, restarted, checked again. did it more often and noticed that the issue was solved.
CONCLUSION
The connector of the battery on the main board gets loosen up with time (maybe) and there is interruption of current transfer.
therefore the battery gets it's funny character.
HOPE I SOLVED YOUR PROBLEM, CHEERS!

Hi,
i have the same issue...
is there anybody tried this and can confirm this solution?
I also will try it.

More information
I tried to do what you suggest, I opened the tablet and found this:
can you please explain what to remove and how? Thank you

Lift the tape where the two back ribbons connect, release the clamps, remove the ribbons and reinsert them firmly and replace clamps and tape. That is what i did. Been having this problem for months! Will report back when i drop below 50. That is when all my problems start. Really hope this works!! Thanks for the help!
Update: I am sad to report that I am still experiencing the same problem.

ttreed07 said:
Lift the tape where the two back ribbons connect, release the clamps, remove the ribbons and reinsert them firmly and replace clamps and tape. That is what i did. Been having this problem for months! Will report back when i drop below 50. That is when all my problems start. Really hope this works!! Thanks for the help!
Update: I am sad to report that I am still experiencing the same problem.
Click to expand...
Click to collapse

ttreed07 said:
Lift the tape where the two back ribbons connect, release the clamps, remove the ribbons and reinsert them firmly and replace clamps and tape. That is what i did. Been having this problem for months! Will report back when i drop below 50. That is when all my problems start. Really hope this works!! Thanks for the help!
Update: I am sad to report that I am still experiencing the same problem.
Click to expand...
Click to collapse
I think this is wrong. In my suggestion the power connector is the white one in the middle with the red and green cables. Just remove the tape and lift the connector upwards to you.
I think the other two black ribbons are for the USB port and for the mic or so.
It worked for now. The battery consuming is extremely better then before.
I hope this solved the issue.
merry Christmas to all
LamerMmc

I apologize i left that part out but yes i did that as well. I would like to see others people's results as well though.

Or is it a rogue app?
I've been having the same, infuriating issue, including the CPU getting really hot.
I reflashed ROMs over and over, with and without formatting data, I went back to stock, flashed different kernels...OMG, the amount of time I have wasted is frightening.
I'm finally trying the following and it seems to be working:
- full wipe, reflashed Hyperdrive 4.1, as per his instructions
- on boot, waited 10 minutes and rebooted.
- after reboot I didn't allow ANY automatic updating and I started reinstalling apps one by one.
- battery life has been stable!
- And now I may be on to something! Yesterday, after updating the following 10 apps, the same crazy battery performance reappeared. Then when I uninstalled the updates to these 10, the battery life returned to normal and not acting crazy:
- Dropbox
- ES File Explorer File Manager
- Gmail
- Google
- Google Keyboard
- Google Text-to-Speech
- Google+
- Maps
- Papergarden (Tab S)
-Samsung Link
I'm going to one-by-one see which one induces the crazy battery performance.
Watch this space...
UPDATE: I think it's Samsung Link...when I updated it, the same f****ed-up battery behavior came back! I think I found it! Woo-hoo! Woo-hooo!

I`m having this issue too, got bored changing roms and kernels, KK or LP still no result.
Battery drains much faster on gaming like Dead Trigger 2. 100% to 20% less then in one hour. If browsing and watching videos or doing other stuff SOT is nearly 4-5 h. Besides, when boot into recovery, battery percentage always differs from ROM one and never matches to it. Didn`t try yet method in OP, but anyway, I`m interested in this NewPower99 Battery replacement kit. Did anyone test it?

kornelius1982 said:
I`m having this issue too, got bored changing roms and kernels, KK or LP still no result.
Battery drains much faster on gaming like Dead Trigger 2. 100% to 20% less then in one hour. If browsing and watching videos or doing other stuff SOT is nearly 4-5 h. Besides, when boot into recovery, battery percentage always differs from ROM one and never matches to it. Didn`t try yet method in OP, but anyway, I`m interested in this NewPower99 Battery replacement kit. Did anyone test it?
Click to expand...
Click to collapse
I would be interested, but since we have three months lefts until Mobile World Conference in March and we could see the Note 10.1 2015 or Note pro alongside GALAXY S6.

Solution
I take the tablet to the samsung and the problem is the board, they had to change this part.

bilalraybrig said:
hi guys,
I have learnt a lot from xda and had been using this site for all of my android issues and mods. This is just fabulous.
So, I have been using my Note 1 0.1 since a couple of weeks and it's battery was acting in a funny manner.
PROBLEM
Sometimes it played well down to 60% from a full charge , then down to 15% in a minute and then down to 4% in next 5 minutes. Then i would restart the tablet and watch the battery suddenly having around 35% battery. THIS WAS SO WEIRD.
I used many battery calibrators from play store but none of them worked.
SOLUTION
And then out of frustration, I pulled out the back cover, took out the battery connector, and then placed it firmly, back to its place. switched it on used it for couple of minutes, and noticed the battery percentage. restarted, YAYY! same battery percentage. used it again, restarted, checked again. did it more often and noticed that the issue was solved.
CONCLUSION
The connector of the battery on the main board gets loosen up with time (maybe) and there is interruption of current transfer.
therefore the battery gets it's funny character.
HOPE I SOLVED YOUR PROBLEM, CHEERS!
Click to expand...
Click to collapse
Thanks dude, that really helped me. I got rid of the the fake percentage and I have the feeling that my battery improved . Thank you again

tab gets flickering screen and reboots

I dropped by tablet battery down once and now every so often the screen flickers with vertical lines and this is followed by loss of network and the thing reboots.
I've read this to be a battery problem.
Warranty is still active but I've rooted it and my Knox counter has gone up.
What do you think XDA? Just get a replacement battery?

NightShadow02 said:
I dropped by tablet battery down once and now every so often the screen flickers with vertical lines and this is followed by loss of network and the thing reboots.
I've read this to be a battery problem.
Warranty is still active but I've rooted it and my Knox counter has gone up.
What do you think XDA? Just get a replacement battery?
Click to expand...
Click to collapse
If you have the ability, since it was dropped, I would open it and make sure connection is tight to battery and screen. Then if it still acts up, get a battery. Several people had battery issues out of the box. All it turned out to be for a few was a loose connection.

i was thinking about that but i'm afraid of voiding warranty. do i even still have warranty? due to the knox?

flhthemi said:
If you have the ability, since it was dropped, I would open it and make sure connection is tight to battery and screen. Then if it still acts up, get a battery. Several people had battery issues out of the box. All it turned out to be for a few was a loose connection.
Click to expand...
Click to collapse
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.

NightShadow02 said:
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.
Click to expand...
Click to collapse
I'm not by any means an expert or repairman of any kind, just so you know. I'm thinking maybe a loose connection at the terminals on the board the battery connects to or if they use a separate board for the battery to connect to and then to the main board it may be somewhere along in there. Maybe a loose wire going into the tab that connects to the prongs. It sure sounds like something isn't making a good connection. Sounds like a load gets put on it and it and that bad connection can't handle the load.
Might just be you're going to have to send it off...

You may be right. Sounds like a particular connection which does higher load or something. Once i put the tablet in power save mode, the symptoms never reappeared. I dont notice a drastic slowdown in the tablet either. Probably am prolonging the inevitable.

Same Symptoms
NightShadow02 said:
You may be right. Sounds like a particular connection which does higher load or something. Once i put the tablet in power save mode, the symptoms never reappeared. I dont notice a drastic slowdown in the tablet either. Probably am prolonging the inevitable.
Click to expand...
Click to collapse
I am facing exactly same issue what you have described and am in same situation, have tripped Knox on my Tab S 8.4.
I can see that you have been able to suppress the behavior by putting it to Power Saving mode. Have you experienced flicker and reboot since then? I am planning to take it to Samsung store not sure if they will honor warranty, did you tried that?

misrasandeep said:
I am facing exactly same issue what you have described and am in same situation, have tripped Knox on my Tab S 8.4.
I can see that you have been able to suppress the behavior by putting it to Power Saving mode. Have you experienced flicker and reboot since then? I am planning to take it to Samsung store not sure if they will honor warranty, did you tried that?
Click to expand...
Click to collapse
nope, ever since the Power Saving mode solution, it hasnt flickered and rebooted yet. and my warranty was expired by that point so i didnt bring it to the shop. no noticable reduction in performance so far

possible battery connector
NightShadow02 said:
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.
Click to expand...
Click to collapse
I have seen this problems on 2 tablets 10.5 and 8.4 the connector where battery is connected on motherboard gets loose which causes reboots and flicker
Solution in my case was resoldering that connector again

i had the same problem, opened up my tablet, just disconnected the battery, cleaned the contacts, pushed it back, made sure its nice and snug, put it all back together and now battery doesn't drain as fast, no more flickers and reboots!

hmm. i'll have to give it a try. you think this may be something to do with condensation?

Sorry for the bump, but I'm having this issue as well on my S 8.4. Custom ROM. The thing with me is that it's not consistent. One day, it will do it a few times; others, no issues whatsoever. I'll try the suggested if it gets progressively worse.

Hey guys,
Unfortunately our home's tablet (Tab s 8.4 Wifi) has the same problem.
It never did weird whatshowever, but when I flashed a custom rom (which went perfectly smooth actually) the screen flashes and the tablet reboots sometimes.
Now it weird that this never happened before and only when I flashed a custom rom it began showing this behaviour.
I am affraid of opening this tablet, and I guess because of the custom rom there is no warranty left anymore (or can this be bypassed by some terminal trick?)
Also I question myself if this is not a software issue, and that it can be fixed with software or so?
Thanks for answering!

My Fix
Hey Guys!
I might have some surprising news to tell about this "issue".
I saw some unboxing video's and saw at what place the battery connector was placed. It was some sort of a 'push to click' system.
So what I did was the following:
I pushed the tablet at the place of the battery connector. I tried this at various places until I heard a *click*.
Now I don't have this issue anymore. Jay!
I hope this will help you too!

I started to have the same issue on a Tab Pro 12.2, presumably after the battery has lost considerable amount of its energy. Normally I remember this tablet to have a dazzling 10+ hours of usage time. Just after some serious usage time of more than 2 years this issue started, along with increasing temperature and finally reboot. From time to time Android gave a warning message about overheating. From time to time charge values drop big values at a time. From 45 to 20 or 80 to 50. Seems arbitrary. This was happening even when I was on stock, then I switched to some Android 6 stock port from some other tablet. Still the same.
I believe the battery needs replacement. (That's obvious after 18 months, I just mean blinking is related to this) Hope I can find a high quality one cause there are several garbage batteries.

HELP- Roms keep crashing on Tab Pro 8.4

let me start off by saying ive worked on two galaxy Tab pro 8.4's, one is mine one is my dads. my tablet has no issues, his however crashes after a little while of being on ANY Rom. we have tried Cyanogenmod, Slim Rom, and Resurrection Remix, all of which i have installed on my tablet without any issues but after a while on any of them it just goes into a bootloop. This is what i do every time I install a new rom-(1) Boot into TWRP (2) Wipe everything except SD card (3) Flash Rom and appropriate Gapps. am i missing a step? am i doing anything wrong? At first it looks like it is working then after a week or so it just goes into a boot loop. I am confused because i don't so anything different on my tablet. any help is much appreciated.

Try using one of the debloated stock roms
Sent from my Nexus 6P using Tapatalk

Sounds to me like it might be a Battery / Battery connection problem. Especially if the Device just suddenly dies - reboots like that.
In my experience random reboots just happen. Perhaps once every few weeks or so? But I hardly if ever actually turn my T325 off.
I dare say the only time it ever gets to that state is if the Battery has reached that level of depletion.
*Edit* So probably 'cause of that, and having amassed a lod of crap in that time, and so just the one random reboot happens.
But, I can recall having replaced the Motherboard in my Device, which I placed into a replacement house, after trashing the Display on my first one. Which had such random boots, when otherwise held normally. Eventually reseating the Battery Connector managed to fix it for me. Like I said Random reboots are a thing, and they will happen, in my experience even on stock Firmwares. Especially if you never really ever do a manual reboot from time, to time.
But, such sensitive crashing, rebooting, caused by just looking at it funny is not normal, and IME is likely down to either a bad Battery, or more likely a poorly connected one.

Thank you, i will look into this. Its a definite possibility.

Did re-seating the battery work for you? I have a Tab Pro 8.4 that has been doing a lot of random reboots lately -- I also have tried a lot of ROMs (including the three you mentioned) and things only seem to have gotten worse, which is why I suspect a hardware issue. I'm typically at one reboot every 10-15 mins of use. Any suggestions welcome.

reseating
reseating the battery does wonders, it stopped the bootloop for me and increased the battery life as well, you just need to be cautious when u reseat it

Shortened battery life, random reboots, intermittent WiFi ... sound familiar?

I have the SM-T320 (Galaxy Tab Pro 8.4). About 5-6 months ago, I noticed that its battery life began to get much worse (used to last easily through the day, now only lasts a few hours of fairly light use). About two months ago it started suffering from random reboots at odd moments. I had been using one of the CM ROMs and tried others to see if I could solve the problem, with no success. Over the last few weeks the reboots have become so frequent that the tablet is unusable (random reboots every 10-15 minutes) and WiFi has also become unreliable -- the tablet seems to be able to "see" my home network, but can only occasionally get an IP address (even though the signal is strong and other devices have no problem).
Based on the fact that these symptoms have persisted through different ROMs, I strongly suspect it is a hardware issue.
I am wondering if anyone else has experienced these types of symptoms, and if so, how you solved the problem. I don't want to start opening up the tablet unless there is a good chance of success. Is this something a battery re-seat would fix?

Well the second Tab Pro I bought, after trashing the one I received for Christmas. Had a broken Anntena. No clue how that could have happened. As it's a very tiny Board that sits in the lower left Corner that has a Socket on one Side and the missing Gold Finger on the other. The upshot of that was I could only pretty much see the local Net. And Bluetooth had like Zero Range. Replacing that Part with the one from my first Tab Pro I managed to fix that.
As to the Battery, again the consensus here is that it's likely a somewhat lose Battery connection. So I would investigate those Threads for more Details.

Thank you. I did open up the case and re-seat the battery -- and the result was a boot loop, so now I'm not even able to assess the Wifi issues. I will have to spend some more time on it.

Might be a failed battery.
Sent from my SM-G900T

^ That thought crossed my mind as well. The behaviour I'm experiencing at the moment is as follows:
When I plug in the USB charger, I get a boot loop ("battery charging" icon followed by a few lines of text on the screen, followed by a "battery charging" icon, followed by a few lines of text on the screen, etc.) This happens even if I haven't tried to turn the tablet on.
By holding down the power key and the volume-down button I'm able to get to the "install custom ROM" screen but can't continue past it -- pressing any other button only gets me back into the reboot loop.
I found a few tips online that I'll try out later -- otherwise I'll have to decide whether it's worth it to buy a replacement battery (anyone have a good source?)

-The shortened battery life must be due to being used excessively maybe.....It is recommended that you factory reset the device every 6 months so that it doesn't get wasted like that.
-And the reboots is probably because the Memory being used too much as well, once a limit has been reached it reboots so that it doesn't blow up!
-The wifi issue is very common, the SMT320 has a problem connecting to poor connection wifi...make sure your speed is fast enough and is quite close enough to the router. If that doesn't help, try restarting your router, mostly works.
The boot loop is a very annoying thing, make sure you are not dirty flashing and do a clean one,i,e, wipe your system,data and cache and flash a simple and smooth rom....your choice.
Hope this helped in some way....

Amazon... 20.00 prime
Sent from my SM-T320 using XDA Free mobile app

JHW3 said:
Thank you. I did open up the case and re-seat the battery -- and the result was a boot loop, so now I'm not even able to assess the Wifi issues. I will have to spend some more time on it.
Click to expand...
Click to collapse
I have a bit of an update on this, for anyone following along or who finds this thread in the future. Re-seating the battery -- for a third time -- ended up solving the boot loop. The key was that I needed to leave the battery disconnected for an extended period of time (overnight). Things are mostly back to normal now, though the battery life is not what it used to be, so I may buy a replacement.

Tried rolling back to stock?
Had a lot of random reboots with cm, so I tried rolling back to a deodexed, deknoxed, debloated stock ROM.. problem dissapered... Then came back now after I've had the tab for 18 months. But only happens when battery is below 50% and screen light is fixed (turning on auto dimmed the screen a bit but stopped the reboots).
I have a T325.
Cheers!

absurd behaviour noticed in mi 9 se!

greetings to everyone! I've been using mi 9 se for more than 2 years, during this period i didn't face any major issue regarding hardware and software. for a while, it has started abnormal behaviour! device can't take any sort of minor pressure as a consequence it reboots automatically. such issue has started since last month and it continues... i used to play codm and one day i've noticed the phone took reboot automatically (didn't crash the app), it's normal that most of the phones get hot while doing any heavy tasks so i took the issue in a normal way after that trouble is a a routined companion while operating the phone! most of the time, phone reboots automatically while watching a fb video let alone surfing yt. after reaching the battery percentage below 50%; it becomes more difficult to operate the phone. can't even take a single photo, phone gets turned off and on automatically. one thing i've felt that between (90-100)% phone can be operated smoothly/peacefully as before. phone charges slowly. steps that i've taken to get rid of the issue: 1> Changed couple of roms (currently using eu ones) to percive whether it's a software issue. 2> changed chargers/charging cable but in vain (for slow charge issue). 3> about 80% space left on my phone. now it seems to be an issue of hardware rather than a hardware, battery might be creating the issue. also i'm confused between whether the issue has been created by battery or motherboard. thanks,

Hey,
had mostly the same issue. Repair Center first said might be motherboard or Bad Battery or Rom Issue. I ordered new Battery and changed it. Since then no issues. But nobody at xiaomi could say why.