[HELP] Tablet won't discharge completely before turning off - Android Q&A, Help & Troubleshooting

Hello! I'm having issues with my Dell Venue 8 7840 tablet battery. So far it seems like an weird problem that i can't find people with similar issues anywhere, or maybe am not searching the right key words.
So, here is the thing, everytime the battery status reaches 37% it turns off like there is no charge anymore. If I turn on again, it turns off right after. So far as I can remember it started at 28%. I've tried reseting the device and battery calibration, neither changed anything. The weird thing is (at least for me) the max capacity is 4300 mV, but when i was using (another) calibrating app, the mV reaches only 3479 before turning off, and the animated status indicator showed like it was completely empty.
There is an dell app that verifies if the battery is working normally, and so far it hasnt flagged any issue.
Not sure for how long it has been happening.
Bought: one and a half years ago
Model: T02E001
Android: 5.1
Kernel: 3.10.62-x86_64_moor-g774f842
Service tag: J7QKR02
Software: Venue 8 7840-user 5.1 LMY47I BBP803A173600DEL release-key
PS: there is a slight lift on the screen that i've heard could indicate a puffed battery, but it really really small, and it has been there since i bought. At least it doesn't look like it got worse with time.
If anyone could help me!

Related

[Q] Battery / ROM problem??

Hi all. I really don't know what causes my problem, so I'll just describe it:
Epilogue:
My Legend came with some Vodafone ROM so as soon as I got it I flashed 2-3 ROMs found on XDA (all in the same day, all were 2.2) before I settled for BlaY0's. Everything was working properly. After 3-4 months I decided to try a new ROM so I flashed a 2.3.3 with HTC Sense (http://forum.xda-developers.com/showthread.php?t=987251) - didn't like it much; then I tried a Cyanogen, also 2.3 - didn't like it either. So I flashed back the BlaY0 2.2. (also, in one day)
This is when my problem started.
Usually my battery would last for a day and a half. But every evening I connect it to the charger (at about 50%). In the morning the little light turned from orange to green and the battery indicator showed 100%. This was before! Now, I connect the charger in the evening but in the morning the light is still orange and the battery indicator shows something between 70% and 85% (I don't know if this is important, but most of the times is 85%). Usually it took 2-3 to fully charge the battery.
After a while, I noticed that if I reboot the phone in the morning, after the reboot the indicator shows 95-98%.
First thing I did was to wipe the battery stats (http://forum.xda-developers.com/showthread.php?t=765656) but either I did it wrong or that was not the problem because it did'n solve anything.
Then I noticed something else. When I go to SETTINGS>ABOUT PHONE>BATTERY I can see the UP TIME and the AWAKE TIME. I'm guessing that the up time is the total time since last reboot but the awake time I'm not sure; is it the time the display was on or it is more about CPU activity? Anyways, it seems that after I connect the charger, it thinks that it is awake because in the morning I can read about 8-9 h of awake time (during the day it reaches at about 1-2 h). So it appears that something consumes the power at a higher rate messing with the charging process. If so, why does the battery indicator heals after reboot?
Thinking that an app was causing the problem I eliminated some of them: Advanced Task Killer, Llama, Watchdog. The problem persisted...
Now I'm out of ideas...so if someone has some I'd be grateful. It's not that I need to reboot in the morning, it's the not knowing that's killing me!
Absolutly same issue here.
I remember seeing a solution somewhere in the forum. Try using search. I think there're many threads revolving around this issue.
Sent from my Legend using XDA App
elk2210 said:
Absolutly same issue here.
Click to expand...
Click to collapse
I know that it's selfish but I'm glad I'm not alone
@Asovse1: I did a search before posting but I'll keep digging if you say there is a solution somewhere. Tks!
marginean.m said:
I know that it's selfish but I'm glad I'm not alone
@Asovse1: I did a search before posting but I'll keep digging if you say there is a solution somewhere. Tks!
Click to expand...
Click to collapse
There was a huge thread on this in General.
http://forum.xda-developers.com/showthread.php?t=1151450&highlight=charge
Unfortunate, until an alternate solution is found, it seems that replacing a piece of the hardware is the only way. Which sucks. I'm sorry.
When flashing a new ROM or switching between primary and secondary batteries in my wallet, I always make sure I calibrate it so the system doesn't misinterpret predefined untrue values regarding the highs and lows of the battery.
Actually, with my second battery, it takes an hour to charge from 2-60, then another one for 61-76, then the whole night til 100. It's quite horrible. The stock HTC battery excels at charging, but I digress.
It seems like a counter-solution to me, but maybe a temporary fix for you: Have you tried investing in a really cheap, secondary battery, perhaps on eBay? I bought two for around 2 dollars each, on separate occasions. My first I'm still using now, in my wallet, switches each month. My other one I bought recently, and the first time it dipped to 30%, it completely shut off. Needless to say, I threw it away, it was horrible.
@Asovse1
I read the thread...to be honest I never thought it would be a hardware issue. Anyways, replacing the motherboard isn't really a fix.
I guess your solution (having spare batteries) is the only one feasible. This kinda sucks!
Solution (see last sentence)
I have two HTC Legend phones here that both have this same problem.
I have read elsewhere that some people got the HTC Legend fully charged by charging it normally, like overnight, then powering it down and charging once more until the light turns green. Some repeated this procedure twice, i.e. pulled the charging cable, then plugged it in again.
I just tried charging with the phone powered down and got it to 100%.
But I'm still not sure whether this is just snake oil, because the indicated figure may not actually show the true charge.
Addendum: As I now know, it is snake oil. As far as I can tell, the phone charges normally. Only the indicator underreads. It does not reach 100%, it goes down rapidly, the phone keeps operating for hours with the indicator showing 3% or less.
And here is the solution.

[Q] Phone Stops, Overheats, Abnormal battery draining

Hi everybody!! First of all thanks to all nice guys and girls here who are always willing to help noobs like me!! You really deserve a prize!! :highfive: Now, talking about my phone.. my gt-i9100 with JellyBAM ROM 7.8.0 and dorimanx 9.18 has a big problem. Well, after 5 months i haven't been able to understand if it's a hardware problem or a software one. Because I' ve always had problems even with my stock firmware (4.0.3 XWLPF italian no-brand ITV), but they were different. My battery has always drained very fast in every condition (asleep, full loaded cpu, even while off) and sometimes the battery went down from 70 to 20 in one night while the telephone was off. Then while the telephone was on it suddenly blocked and started heating. i wasn't able to switch it off normally but i had to do it forcibly (pressing 10 secs power off button). Then i changed battery with a new original samsung one. After a bit the problems were the same. Meanwhile i rooted the phone then got a cooked rom and a new kernel. Same results. High battery drain in every situation, then when the battery is about 35%, it goes down like in 5 minutes and the telephone shuts down even if there are no running tasks, wifi and mobile data off, screen off. I really don't know what to do.. I waited so long before posting this because i know there are tons of threads like this, but i couldn't find any solution searching in them. Now i've seen that BetterBatteryStats report a partial wakelock called AudioOut_2. I' ve already done some researches, but i haven't been able to make it go away. Please Help me!! I don't know what to do anymore
P.S. This happened while i was writing. battery at 60%, then the phone freezed and i couldn't turn it off normally. so i forced to shut down and when i switched it on again battery was at 33%. The phone was quite hot around the camera. Then i used it about 3 minutes and it freezed again, this time becoming really really hot. i forced to power off again and when i switched on, battery was 1%. Then i turned it off normally and put it in charge. But the battery went up again on her own (Blue part of the graphic) at 70%!!! then it started charging (Lighter part of the graphic)...

Nexus 9 battery meter glitching + poll

Hello fellow Nexus 9 owners! I've got a question for you. I've had my Nexus 9 for 3 days now, I've been very satisfied with what this thing can do in terms of performance and even battery life, mostly. Now I am facing a problem. Today, I used it just normally playing World Of T
Goo and suddenly, it died on me. No warning, nothing. The screen glitched out and looked like a failing Linux graphics driver (weird green/black/pink/white pattern), the speakers were outputting a strange noise for about 4 seconds and then the screen went black. Pressing the power button didn't do anything, so I plugged it in and the white LED flashed just as if the battery was totally empty. So it charged up for a while just as always, took about 15 minutes and the charging monitor showed me 3% by the time it had enough power to load it up (that was a few hours ago). The battery is now on 16%, I plugged it in and suddenly, it displayed 21% (while the device was turned on, not the battery metre mode or what's it called). So I'd like to ask you if you have experienced something like that with your device or if it's just my unit. I hope this glitch isn't caused by CM12. My device is also charging very slowly or not at all during use. It either stays at, let's say 15%, or drains slowly. I wonder if this can be fixed with a custom kernel that supports quick charging.
Alexandroid99 said:
Hello fellow Nexus 9 owners! I've got a question for you. I've had my Nexus 9 for 3 days now, I've been very satisfied with what this thing can do in terms of performance and even battery life, mostly. Now I am facing a problem. Today, I used it just normally playing World Of Too and suddenly, it died on me. No warning, nothing. The screen glitches out and looked like a failing Linux graphics driver, the speakers were outputting a strange noise for about 4 seconds and then the screen went black. Pressing the power button didn't do anything, so I plugged it in and the white LED flashed just as if the battery was totally empty. So it charged up for a while just as always, took about 15 minutes and the charging monitor showed me 3% by the time it had enough power to load it up (that was a few hours ago). The battery is now on 16%, I plugged it in and suddenly, it displayed 21% (while the device was turned on, not the battery metre mode or what's it called). So I'd like to ask you if you have experienced something like that with your device or if it's just my unit. I hope this glitch isn't caused by CM12. My device is also charging very slowly or not at all during use. It either stays at, let's say 15%, or drains slowly. I wonder if this can be fixed with a custom kernel that supports quick charging.
Click to expand...
Click to collapse
It's a known cm12 bug
R3Lax1 said:
It's a known cm12 bug
Click to expand...
Click to collapse
Oh, brilliant, thanks. That was quick. So is there any workaround? Pretty annoying to never know how much you actually have left.
R3Lax1 said:
It's a known cm12 bug
Click to expand...
Click to collapse
What about the slow/no charging issue? Is that CM related, too?
Alexandroid99 said:
Hello fellow Nexus 9 owners! I've got a question for you. I've had my Nexus 9 for 3 days now, I've been very satisfied with what this thing can do in terms of performance and even battery life, mostly. Now I am facing a problem. Today, I used it just normally playing World Of T
Goo and suddenly, it died on me. No warning, nothing. The screen glitched out and looked like a failing Linux graphics driver (weird green/black/pink/white pattern), the speakers were outputting a strange noise for about 4 seconds and then the screen went black. Pressing the power button didn't do anything, so I plugged it in and the white LED flashed just as if the battery was totally empty. So it charged up for a while just as always, took about 15 minutes and the charging monitor showed me 3% by the time it had enough power to load it up (that was a few hours ago). The battery is now on 16%, I plugged it in and suddenly, it displayed 21% (while the device was turned on, not the battery metre mode or what's it called). So I'd like to ask you if you have experienced something like that with your device or if it's just my unit. I hope this glitch isn't caused by CM12. My device is also charging very slowly or not at all during use. It either stays at, let's say 15%, or drains slowly. I wonder if this can be fixed with a custom kernel that supports quick charging.
Click to expand...
Click to collapse
Alexandroid99 said:
What about the slow/no charging issue? Is that CM related, too?
Click to expand...
Click to collapse
Yep, everything is related. Actually, it charges normally, just that the battery % updates only when you replug. The only current workaround I found is go back to stock/not cm-based rom.
R3Lax1 said:
Yep, everything is related. Actually, it charges normally, just that the battery % updates only when you replug. The only current workaround I found is go back to stock/not cm-based rom.
Click to expand...
Click to collapse
And what about the percentage going down during charging? I've had a similar problem on my Nexus 5 once, the solution was to use a better cable and a better charger. But here, the percentage goes down although I am using the stock charger+cables.
Alexandroid99 said:
And what about the percentage going down during charging? I've had a similar problem on my Nexus 5 once, the solution was to use a better cable and a better charger. But here, the percentage goes down although I am using the stock charger+cables.
Click to expand...
Click to collapse
Probably cm related too. I'd just flash rastapop or some other rom until nightlies get sorted out. Nexus 9 received them less than a week ago so bugs like this are normal.
R3Lax1 said:
Probably cm related too. I'd just flash rastapop or some other rom until nightlies get sorted out. Nexus 9 received them less than a week ago so bugs like this are normal.
Click to expand...
Click to collapse
Yepp, I am aware of the fact that night lies have bugs, I'm just not used to this type. ^^

VZW Galaxy S4 "krtccd" battery drain

Hello all, I hope I'm posting in the right section.
I've been searching for info on the battery drain problem for some time now. I have used GSam and System Panel to find the culprit and observe it for a while and I think I see what is happening. Don't know if there is anything to be done but I'm hoping there is a fix out there.
Background:
Stock Verizon Samsung Galaxy S4, stock Rom on latest OTA update (screen shot attached)
One morning around Christmas time my phone drained the battery from full to 10% in about 5 hours. I had my phone in my pocket like every other day at work, I had noticed it was heating up as well. I got an error message at some point that morning about some kind of "Samsung Power Share" I had never heard of. Then I could not get the phone to charge unless powered off, and that very slowly; it was the "grey battery" problem. This problem persisted for several days and then turned intermittent then nearly back to normal, though never quite right.
What I've done:
Wipe cache, FDR, replaced USB charge port, replaced stock battery with Anker battery.
The new charge port dramatically improved recharge time and eliminated the grey battery error but I still have terrible battery life compared to earlier in this phone's life, in other words, compared to before the latest OTA which appears to be a disaster. Didn't notice any significant improvement with the new battery.
Here's what I've seen:
As soon as the battery drops below 50% the rate of discharge maxes out and this matches up almost exactly with the activity or CPU usage of the system process "krtccd." (See attached pics showing krtccd activity corresponding with increased battery drain below 50%). GSam shows the "Kernel Android OS" (in which is krtccd) using 50% of the battery where it used to be that the screen was the biggest drain, pic attached.
Is there any way to control "krtccd" as it seems to go rogue? Why does it only seem to go rogue when the battery gets below 50%?
This is a company owned phone so rooting is not an option unfortunately.
Thank you so much for any input you may have!
I apologize if this posted in the wrong part of the forum. I did do a lot of attaching for info on what the krtccd process does and why it changed so drastically with the last OTA update but I can't find much out there or in here. I don't have the option to root phone so am I such with this weird poor performance whenever the battery drops below 50%?
Thanks again, I appreciate any input you guys have.
As a follow-up, here is a screen shot from System Panel this morning showing that "krtccd" stopped activity as soon as the battery began to charge. I don't get it, it's like it spins full bore in the background sabotaging the battery for the last 50%.
BTW, the discharge last night (in my first set of screen shots) happened while the phone dat idle on my windowsill, don't think I even turned the screen on during that whole time as I was in discussion with a friend. It's weird...
Rooted Galaxy S4 (Sprint)
Same issue. Can anyone provide any information on what this process does?
Someone opened an issue report with android open source.
Issue 160689: KRTCCD Bug?

[HARDWARE PROBLEM REPORT] Strange battery issues on my Samsung Galaxy Core Prime

[Notes:
• I put this thread in this section because of the "Other" tag. If it is unrelated consider moving my post, thank you.
• This is an issue report for my device, I am not saying that everybody got the same. ]
Hello,
I got a battery issue on my Samsung Galaxy Core Prime for at least more than a year.
The problem is: almost everytime, my phone crash when arround 40% battery level. It's not an informatic crash but... I'm not sure. The phone just suddenly shut down, not as it ran out of battery, displaying the shutdown logo and going to sleep, it behave like I pulled off the battery.
This is not a battery misplacement problem because the shutdown doesn't happen a totally random way: it never triggered over 50% for now.
Moreover, the battery level goes wrong after such crash. Even after waiting some time with battery out of phone I got randomly a new battery percentage that will be either lower, same or even higher than when it crashed. So maybe the whole problem is due to a shift between real battery percentage and what phone determined.
I also noticed that when rebooting after the crash the phone speakers make a weird sound, a kind of "shhhhhhhh" even with silent mode enabled and no system sound, and when it happens phone recrash on booting (system) logo.
I personally don't think it's system's fault, because between the first time it happened and now I may have flashed at least 6 times my ROM and made various wipes. Also somebody getting the same phone model than me never got such problem, even tough he is not rooted and has recent firmware. In the end the problem getting worse and worse again (=more frequent) so I'm almost sure it's a material problem.
But which one? Is this directly battery's fault or is it captor's fault? Actually I threatened the battery very badly, it's true. But everything I did — overcharging, emptying battery at the time I thought that was a good thing because of a suppoesed memory effect like nickel batteries, using charger block from an older device with a bit different configuration — should have shortened the battery's life, however it's just like the battery is now discharging a bit faster but got a kind of danger zone where you're not sure that it will keep behaving normally, so much that some measurements and developing apps determined that my battery have a good health, that is maybe absolutely FALSE.
Talking about this danger zone, I also noticed something even stranger over all.
Depending of what I do, I got higher or lower chance to have my phone crashing under 40% level:
- If Wifi is enabled, the phone got arround a half more chance to shut down unexpectedly.
- This is worse when using data consuming app (i.e. Youtube)
- Using more hardware also increase this phenomenon (when using camera) and enabling flash instantaneously and almost everytime crash the phone.
Here are what I reported.
What do you think?
It has happened to me many times. So i normally keep it charging all the time to be safe.
Prime said:
It has happened to me many times. So i normally keep it charging all the time to be safe.
Click to expand...
Click to collapse
All the time for real? Be careful, that's not a good practice. Unless you removed the battery first, this will get worse if you do that.
I have a similar but possibly unrelated problem.
If i charge upto 100%, the battery goes directly to 0 after around 50%.
If i charge upto 50%, then the battery drains rapidly after around 20%.
I don't think its a battery problem because its the same with two replacement batteries and a stock battery. (Or maybe I have a bad luck and bought ****ty batteries)
Will post a screenshot soon...
I have the Same problem i changed the battery twice but i still have the issue
rms112 said:
I have a similar but possibly unrelated problem.
If i charge upto 100%, the battery goes directly to 0 after around 50%.
If i charge upto 50%, then the battery drains rapidly after around 20%.
I don't think its a battery problem because its the same with two replacement batteries and a stock battery. (Or maybe I have a bad luck and bought ****ty batteries)
Will post a screenshot soon...
Click to expand...
Click to collapse
What you posted is close to what I noticed, so it is not unrelated.
This is weird that after buying two more batteries the issue still occure...
I've this problem too :/ (G361H)
I have this problem too. This is the batteries fault only.
Atronid said:
[Notes:
• I put this thread in this section because of the "Other" tag. If it is unrelated consider moving my post, thank you.
• This is an issue report for my device, I am not saying that everybody got the same. ]
Hello,
I got a battery issue on my Samsung Galaxy Core Prime for at least more than a year.
The problem is: almost everytime, my phone crash when arround 40% battery level. It's not an informatic crash but... I'm not sure. The phone just suddenly shut down, not as it ran out of battery, displaying the shutdown logo and going to sleep, it behave like I pulled off the battery.
This is not a battery misplacement problem because the shutdown doesn't happen a totally random way: it never triggered over 50% for now.
Moreover, the battery level goes wrong after such crash. Even after waiting some time with battery out of phone I got randomly a new battery percentage that will be either lower, same or even higher than when it crashed. So maybe the whole problem is due to a shift between real battery percentage and what phone determined.
I also noticed that when rebooting after the crash the phone speakers make a weird sound, a kind of "shhhhhhhh" even with silent mode enabled and no system sound, and when it happens phone recrash on booting (system) logo.
I personally don't think it's system's fault, because between the first time it happened and now I may have flashed at least 6 times my ROM and made various wipes. Also somebody getting the same phone model than me never got such problem, even tough he is not rooted and has recent firmware. In the end the problem getting worse and worse again (=more frequent) so I'm almost sure it's a material problem.
But which one? Is this directly battery's fault or is it captor's fault? Actually I threatened the battery very badly, it's true. But everything I did — overcharging, emptying battery at the time I thought that was a good thing because of a suppoesed memory effect like nickel batteries, using charger block from an older device with a bit different configuration — should have shortened the battery's life, however it's just like the battery is now discharging a bit faster but got a kind of danger zone where you're not sure that it will keep behaving normally, so much that some measurements and developing apps determined that my battery have a good health, that is maybe absolutely FALSE.
Talking about this danger zone, I also noticed something even stranger over all.
Depending of what I do, I got higher or lower chance to have my phone crashing under 40% level:
- If Wifi is enabled, the phone got arround a half more chance to shut down unexpectedly.
- This is worse when using data consuming app (i.e. Youtube)
- Using more hardware also increase this phenomenon (when using camera) and enabling flash instantaneously and almost everytime crash the phone.
Here are what I reported.
What do you think?
Click to expand...
Click to collapse
My device goes at 60%, 40%, etc. and then it starts repedeatly pressing the right side of my screen and not letting me tap the screen, so I lock it and unlock it very fast and I can use the touchscreen for a few moments, before it shuts down without the shutdown screen and makes a *tick* sound, almost like there was an electrical shock inside the battery. I have a PRF and TWRP 2.8.7.0.
EdyCommentaries said:
My device goes at 60%, 40%, etc. and then it starts repedeatly pressing the right side of my screen and not letting me tap the screen, so I lock it and unlock it very fast and I can use the touchscreen for a few moments, before it shuts down without the shutdown screen and makes a *tick* sound, almost like there was an electrical shock inside the battery. I have a PRF and TWRP 2.8.7.0.
Click to expand...
Click to collapse
Got exactly the same problem. You can try to change the battery but in my opinion the only good solution would be to buy another phone. This is personally what I did, as this model gets old really early.
EdyCommentaries said:
My device goes at 60%, 40%, etc. and then it starts repedeatly pressing the right side of my screen and not letting me tap the screen, so I lock it and unlock it very fast and I can use the touchscreen for a few moments, before it shuts down without the shutdown screen and makes a *tick* sound, almost like there was an electrical shock inside the battery. I have a PRF and TWRP 2.8.7.0.
Click to expand...
Click to collapse
I have this same exact problem and the only fixes according to me is to buy a new phone or replace the battery. Also I noticed that the battery of my device has bulged.
RIP, I have the SM-G360T1, stock based custom ROM with TWRP 3.0.1 and this thing's started to give up. Same issues as the people above encountered. The phantom touches are getting wayyy more repetitive, the battery all of a sudden goes down to an extremely low percentage, even at medium to high percentages (such as 50-60%) and even shuts off without any notification. I also had cases where the phone would completely turn off with no shutdown animation AT ALL, plus a spontaneous but audible *TICK* that follows it. Device performance in general also started to horribly depreciate.
Well, to be fair, I had this device for 3 years and I guess it had its day. Time to upgrade.
My device has started to shut off at 80% battery levels and even worse the device gives just about 25-30 min of SOT. Also stressing the device in any way.. games, YouTube et al just causes it to shut down. I now permanently have a battery pack connected to it at all times. But even after all this, the gives good standby time. Notably the device stand for 3+hrs on 3% battery.
Still my phone is in a pathetic condition. ?
Edit - I just got a new battery (aftermarket brand though) and the ghost touches along with sudden shutdown has gone. Also the OG battery was never touching the connectors properly or the battery placement design was not proper, cause the new aftermarket battery was not connected to the connectors properly.
Peace ?
i also got this problem on my sm-g360HU , try chaging different roms and buying a new battery pack, but still this sudden drain battery still exist, it seems like it's the hardware problem already.

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