Battery reporting wildly different levels after rebooting - Epic 4G Q&A, Help & Troubleshooting

Is anyone else seeing this? My phone was reporting 60% before rebooting. After it booted up, my battery was reporting 26%. Rebooted again, and it reported 36%. Rebooted again, and now it's saying 51%.
What the hell is going on with my battery? Is there a fix for this? As listed in my signature, I'm running the latest Nebula ROM on DK28.

This is relevant to my interests. I noticed the same thing on my phone. I just charged it overnight to full and havent rebooted. not sure what it would report ATM. I did find it concerning though.
Battery calibration issue maybe?
Bonsai4all DK28 EXT4

Could try letting it run completely flat then completely charging it to see if it sorts itself out

ive always had weird battery changes after some reboots all the way back to stock 2.1, i would be at 50 then after a reboot be at 30 then after another reboot it would be 0 and couldnt stay on very long.
Very weird!!

This a common issue when flashing.
Rule Number 1: Always flash or odin with a full battery.
Rule Number 2: If not following Rule Number 1 then don't cry about screwed phones.
The plausible reason I have heard is that it takes more juice to burn the firmware. I don't know about these chips, but when I used to burn eprom's the same thing was true.

Related

[Q] Battery Problem - Fully charged but shows empty on my Inspire 4G

I can't seem to find any information on this issue.
I charge the battery fully on my external charger and then when I put it in my Inspire it shows red with no battery charge then shuts down. When I power it on with the usb plugged in then the battery shows full and I can unplug it. If I power it off then back on it then shows empty again, even if I quick plug in the usb. I have 3 backup batteries and this happens with 2 of them. All of the batteries worked fine until this started happening. I just rebooted with the usb plugged in and when I check the battery info on my ICS rom it shows 0%, charging (AC), 21s on battery. When I unplugged the usb and refreshed the battery info it now shows 99%, not charging, 3s on battery.
Any help would be greatly appreciated, my son's Inspire does not have this issue with the same batteries that i use so it has to be related to my phone.
This happens on my phone rom, Melcheizedek v2.1 and on one of my Boot Manager roms, Lords ICS v 7.4.
Thanks!
I dont know if this will help.
Try using a different stable Gb rom. If problem persists, power off, pull the battery out, put back the same battery, power on. If it still happens, try cleaning the battery connectors. In the past week or so in either this section or the inspire 4g (either the general or Q&A) someone explained how to clean them.
Edit: does the same problem happen in recovery? My guess is yes, regardless if it's software or a hardware prob.
Sent from a dream.
Teichopsia said:
I dont know if this will help.
Try using a different stable Gb rom. If problem persists, power off, pull the battery out, put back the same battery, power on. If it still happens, try cleaning the battery connectors. In the past week or so in either this section or the inspire 4g (either the general or Q&A) someone explained how to clean them.
Edit: does the same problem happen in recovery? My guess is yes, regardless if it's software or a hardware prob.
Sent from a dream.
Click to expand...
Click to collapse
I will try a GB rom today. I just completely reformatted and re-installed Melchizedek - AOSP ICS booted my phone and battery shows red, no charge. Reboot with usb connected to AC and full charge shows then when i unplug still full charge. When i am in recovery it shows battery --% for a few seconds then it changes to full.
Coffee still hasn't kicked in
In recovery it shows 100%. If you stay in recovery what happens?
Same problem? It discharges and then shuts down?
Can you use the battery cover from your sons cellphone?
Do you remember what you did when you first noticed the problem?
Insight to something that happened to me a few weeks back.
I was running a Gb miui rom, I installed a mod or something the device bootlooped. Erased everything, used my backup, but then the battery would discharge insanely fast. 3-5% per minute. From 80% it went down to 65%, rebooted, then it would show 76%. Wipped everything, installed a different stable rom, no apps whatsoever, same problem. I went into recovery, same issue in recovery, erased, (this part I'm a bit foggy) I believe the same thing happened in recovery with a formatted system.
Can't remember if I installed another rom or just went back to my backup.
Powered off the cell, swapped batteries with another phone, the issue was gone.
My assumption is that by pulling out the battery it solved the problem.
In your case, you already pulled out and tried several batteries. But they work in your sons cell. However, with several batteries it is unlickly (the spelling for that just seems wrong for some reason) to be a battery (just ranting to see where my mind goes).
Still waiting to know what happens in recovery.
If it happens with different roms, Im assuming you full wiped. Especially if you are running one from the collective and lord. You probably know more than I do
Try using a different battery cover if you can, and also try booting your cell without the sd card.
Try them seperately to see if either one works.
Hope something I said works, or at least gives you ideas to try something else.
Edit: I just re-read your initial post. It happens with two out of your three batteries. That's a tough one.
Whats the difference between the batteries? Does your sons battery work on your cell?
You can disregard cleaning the connectors - probably.
Or clean the connectors on the bats and the cover. Or try your sons bat connector with those batteries.
Could you re-phrase your initial post along with everything that has happened and what you have tried?
Sent from a dream.
Teichopsia said:
Coffee still hasn't kicked in
In recovery it shows 100%. If you stay in recovery what happens?
Same problem? It discharges and then shuts down?
Can you use the battery cover from your sons cellphone?
Do you remember what you did when you first noticed the problem?
Insight to something that happened to me a few weeks back.
I was running a Gb miui rom, I installed a mod or something the device bootlooped. Erased everything, used my backup, but then the battery would discharge insanely fast. 3-5% per minute. From 80% it went down to 65%, rebooted, then it would show 76%. Wipped everything, installed a different stable rom, no apps whatsoever, same problem. I went into recovery, same issue in recovery, erased, (this part I'm a bit foggy) I believe the same thing happened in recovery with a formatted system.
Can't remember if I installed another rom or just went back to my backup.
Powered off the cell, swapped batteries with another phone, the issue was gone.
My assumption is that by pulling out the battery it solved the problem.
In your case, you already pulled out and tried several batteries. But they work in your sons cell. However, with several batteries it is unlickly (the spelling for that just seems wrong for some reason) to be a battery (just ranting to see where my mind goes).
Still waiting to know what happens in recovery.
If it happens with different roms, Im assuming you full wiped. Especially if you are running one from the collective and lord. You probably know more than I do
Try using a different battery cover if you can, and also try booting your cell without the sd card.
Try them seperately to see if either one works.
Hope something I said works, or at least gives you ideas to try something else.
Edit: I just re-read your initial post. It happens with two out of your three batteries. That's a tough one.
Whats the difference between the batteries? Does your sons battery work on your cell?
You can disregard cleaning the connectors - probably.
Or clean the connectors on the bats and the cover. Or try your sons bat connector with those batteries.
Could you re-phrase your initial post along with everything that has happened and what you have tried?
Sent from a dream.
Click to expand...
Click to collapse
When I boot into recovery it initially shows no charge for maybe 20 - 30 seconds and then shows full (or whatever level the battery really is). The battery level stays normal then and works perfectly fine all the while I am in recovery.
I just rebooted with the battery I was using all day, it was plugged into a usb ac at work until about 3.5 hours ago, and it rebooted with a normal battery level, I rebooted again and it was normal again. I booted this same battery in the morning and it showed no charge but now it works fine. I then rebooted with a second battery and again it booted fine with full charge. I put in a third battery, this was the one it first happened on, and it booted with no charge. I put back in the battery I had in all day and it booted with normal charge again. I checked the bad battery and the good battery and both have about 4.2 volts.
When it happened the first time it was only with 1 battery, that was about a week ago. I just got 2 new batteries in the mail and one worked fine and the second booted up showing no charge like the other one. That was 2 days ago, since then every battery seemed to do it until now, I just checked 5 batteries and only the first bad one and the one new one that was bad don't work, weird.
It seems like the bad battery screwed up something in my phone but it's hard to believe that whatever it was would survive a system format. Now it seems to be working fine...I don't like things that fix themselves...
Well, if you have the time let's try troubleshooting the issue with only the bad batteries (as long as if you believe it to be software related only).
Keep in mind that I'm trying to help figure this out, and to keep bumping this thread until someone more knowledgeable joins in.
If its software, remove the sd card, format everything. Power off, remove the battery, while the battery is out press and hold the power button (hoping the cell works something like a pc) for 30s. Then install - I don't know - any rom? Load a few basic apps you use/need. See what happens with the bad battery.
You did say the bad battery does work in another cell?
Sent from a dream.
Teichopsia said:
Well, if you have the time let's try troubleshooting the issue with only the bad batteries (as long as if you believe it to be software related only).
Keep in mind that I'm trying to help figure this out, and to keep bumping this thread until someone more knowledgeable joins in.
If its software, remove the sd card, format everything. Power off, remove the battery, while the battery is out press and hold the power button (hoping the cell works something like a pc) for 30s. Then install - I don't know - any rom? Load a few basic apps you use/need. See what happens with the bad battery.
You did say the bad battery does work in another cell?
Sent from a dream.
Click to expand...
Click to collapse
I don't believe it's software related, I reformatted and re-installed the rom I was using and still had the issue. I have been using the same rom for a while with no issues. I'll check the 'bad' batteries on my son's phone tomorrow.
Edit: Booted normal this morning again, I think I can close this issue for now. I am a bit uncomfortable with not finding the root cause but at least it ended in my favor. Thanks for your input!
You are welcome. My next step was going to be to link your issue in another thread. Good luck.
Sent from a dream.
Please use the Q&A Forum for questions &
Read the Forum Rules Ref Posting
Moving to Q&A
Try full wipe and reinstall ROM, if doesn't work flash another ROM. If doesn't work again, maybe it's problem whith battery controller, you would have to go to service centre
DHD
I had a similiar problem and it happened after i started playing with ICS DHD Roms. I downloaded a stock WWE sense 2 rom and flashed that. I then flashes the latest Stock WWE 2.5 Sense rom and all is still ok. Dunno if the stock flashing (through exe from PC) it was unrooted though. Fixed it but its fine now. So maybe try that.
Perhaps this may help.
http://forum.xda-developers.com/showthread.php?p=26010421
Sent from my Inspire 4G using XDA
Thanks for sharing my post on the Inspire forums, Teichopsia.
I'm convinced that there's something in the non-sense ROMS that doesn't get the battery charge % correctly immediately after booting. I'm having the same symptoms as the original poster is having. Two of my batteries are after market and two are HTC. The generic ones have the problem of registering 0% on reboot after swapping the batteries in. If you have them on the charger they work fine and show 100% after about 30 seconds. If you reboot with the same battery it's fine until you change to a different one. The latest ICS Rom I'm using has the problem with any reboot, even if the same battery is in. If I'm using real HTC batteries this problem doesn't manifest itself on Cyanogenmod or AOSP ROMs.
EDIT: I should clarify that the after market batteries fail on any reboot without the charger with the latest ICS ROM I'm trying, but the HTC batteries are fine.
I've had success with booting into recovery mode and wiping battery stats. This is not a permanent fix but is useful when you don't have access to a charger and need to swap batteries.
The full procedure is this: with phone off hold power and vol down, select recovery, advanced, wipe battery stats, yes, go back, reboot system now.
Bad battery I think. Ik had the same problem with a brand new, original battery.
Charged it fully with external charger, booted phone with it but showed 0% juice....
I had to boot with the charger plugged in, and then after booting it went to 100%
Send the battery back because this was not normal, recieved a new one and didn't have the problem.
btw I was on IceColdSandwich rom...
Im running ICS 4.0.4 aospX 1.0.0-MR1 on my HTC Inspire 4g with a AnkerĀ® 1600mAh Li-ion Battery For HTC Desire HD, Inspire 4G - White and had this problem initially.
The only way my phone would boot up was if it was plugged in, otherwise it would show a dead battery warning when the homescreen loaded, and then it would shutdown. If I booted it while plugged in, then disconnected the cable, then it would run off the battery just fine.
What I did to fix it was to shutdown the phone, take off the battery cover, removed the battery ( the Anker one), blew into the compartment to make sure there was nothing interfering with the connectors, wiped the battery's connectors with my finger, and then i replaced the Anker battery, pushed hard on it to make sure the connection was good, and booted the phone.
To my surprise, this actually seemed to fix the problem. Whatsmore, after I put the battery cover back in place, the phone continued to boot with no issue, meaning I did not have to push on the battery to make sure the nodes were connecting. I even shook the phone in my hand to see if this would loosen the battery connection, but it still booted fine.
I then took out the battery and replaced it to make sure it would still boot, and it did. Hope my solution works for you! Cheers!
CM is having issues on the One X with reported battery levels as well.
Sent from my HTC One X using xda app-developers app

Extreme Battery Drain

I never had that much of a problem with the battery on my Desire Z. Okay, I had to charge it sometime during the day when I was browsing the web or playing for a few hours but then, that was expected.
Forward last week, where I decided to try Mimicry rom (I'm not pointing any fingers there, keep reading). Everything was going smooth except one thing, the battery was draining at least.. twice as fast as usual. I'm speaking deplugging at 7 AM, dead at 12:30 PM. And that's with practically no usage. At this point, I've tried rebooting, and, oddly, it wouldn't do the same thing as usual (not opening or opening briefly to the loading screen then closing). No, it would boot to the launcher, show me that I had 2% left. It's usually at those points that I've been able to take a screenshot.
Then, a few moments ago, if I kept rebooting. It would be back at say 36%, but kept hard dying (no "Android is shutting down" or stuff like that, just BAM, black screen) every 5 minutes.
Thinking that Mimicry would be the culprit, I went over there and asked the question, but, oddly enough, nothing in the rom could produce this effect. Weird. He was kind enough to give me some tips to try to see if it would make any difference. I've tried them.. Several time with the battery stat reset, deactivate the Google Backup in case it was in a loop. I've reflashed the rom, downgraded to the earlier version, updated to the latest. No use.
So at that point, Andromadus Beta 5 was out and decided to go back at Andromadus. At first, no problem but finally, it came back. So the culprit is not the rom, or maybe yes, I don't actually know. Today was the day I could use it the longest but.. It's unbearable. Also, I've looked into 4EXT at the battery indicator and it seems to be ****ed up too. I tried to force drain the battery with continuous permission fixing and the battery would drain from 3% to 0% in under 2 minutes, but would stay at 0% for a while.
So, what do? New battery because this one is bricked? New phone, because at the price of the battery... Or is there a way where I don't have to take my wallet out?
Thanks in advance.
Here are some screenshot I took
EDIT
Seems like no screenshot shows up on there. here's an imgur album
imgur .com/a/j9seu#0
Reupload those screenshots nothing is showing, I'd suggest trying a new battery then if that doesn't work get a replacement device.
New photo upload, to see if it finally works.
Mimicy uses Andromadus source so they could share a piece of code which could falsely report battery information. I suggest, mainly as a test, take a nandroid backup. Then plug the phone in and let it charge until you get the green LED. Leave it plugged in for an extra hour or two just to make sure that your battery is at 100 percent. Then flash the Cyanogenmod ROM then reset the battery stats. Try using Cyanogenmod for a while and see if the phone is still doing the same thing. If it is, then it could be the battery. Also if you know someone with a G2, you can always swap batteries and see if the same issue happens. If it does maybe switch to a non-ICS ROM and if that doesn't work, your phone maybe going bonkers.
i think its kinda bricked, or you could buy a portable phone charger. that could help
synthiis said:
I never had that much of a problem with the battery on my Desire Z. Okay, I had to charge it sometime during the day when I was browsing the web or playing for a few hours but then, that was expected.
Forward last week, where I decided to try Mimicry rom (I'm not pointing any fingers there, keep reading). Everything was going smooth except one thing, the battery was draining at least.. twice as fast as usual. I'm speaking deplugging at 7 AM, dead at 12:30 PM. And that's with practically no usage. At this point, I've tried rebooting, and, oddly, it wouldn't do the same thing as usual (not opening or opening briefly to the loading screen then closing). No, it would boot to the launcher, show me that I had 2% left. It's usually at those points that I've been able to take a screenshot.
Then, a few moments ago, if I kept rebooting. It would be back at say 36%, but kept hard dying (no "Android is shutting down" or stuff like that, just BAM, black screen) every 5 minutes.
Thinking that Mimicry would be the culprit, I went over there and asked the question, but, oddly enough, nothing in the rom could produce this effect. Weird. He was kind enough to give me some tips to try to see if it would make any difference. I've tried them.. Several time with the battery stat reset, deactivate the Google Backup in case it was in a loop. I've reflashed the rom, downgraded to the earlier version, updated to the latest. No use.
So at that point, Andromadus Beta 5 was out and decided to go back at Andromadus. At first, no problem but finally, it came back. So the culprit is not the rom, or maybe yes, I don't actually know. Today was the day I could use it the longest but.. It's unbearable. Also, I've looked into 4EXT at the battery indicator and it seems to be ****ed up too. I tried to force drain the battery with continuous permission fixing and the battery would drain from 3% to 0% in under 2 minutes, but would stay at 0% for a while.
So, what do? New battery because this one is bricked? New phone, because at the price of the battery... Or is there a way where I don't have to take my wallet out?
Thanks in advance.
Click to expand...
Click to collapse
hi there..same problem with me too..exactly..my battery couldn't last for more than 4 hours with minimum usage...have u solved it?

Charging Problems Please Help Have Had This Problem for Months and Still Do!!!

I have had this problem for about 2 months now, and it seems like everything I do, never fixes the problem. When I was rooted, I was having fun tweaking, flashing roms, and mods, but then one day my battery percentage was low so I plug my phone in the charger with the stock charger and cable that came with my GS3. I wait, 5 minutes goes by and I check my GS3 again, and it has the same exact battery percentage it had when I was going to plug it in to charge. Never even increased one single bit. So I thought to myself, that's strange. I wait another 5 minutes, and it only goes up by 1 percent. I was thinking to myself what the *beep*! Now I left it that night to charge, and I wake up... HOORAY! 100% fully charged! I take it out of the charger and BOOM! it drains all the way down, to a low percentage, which I'm pretty sure was the same percentage I had when I went to charge it last night. Now I was pissed man, phew, I got so mad! I read all over XDA and Android forums, and it seems like I'm not the only person who has this problem. There was one thread with like 10 pages and counting. There were answers like, "just wipe battery stats", I wiped battery stats, the problem still persists. It still takes a very long time to charge and, once I immediately take it out of my charger it drains, to a very low percentage. So then people were saying "it's the cable, just use a different cable" I use a cable from a Pantech charger and I wait. It charged my GS3 just like the way it is supposed too. I'm thinking to myself, great it's back to normal charging state! Then another day I plug it in the Pantech charger and my GS3 doesn't even recognize, that it is charging, no lightning symbol on the battery pic thing on the status bar. I wait and there has been no increase, but actually a decrease of battery. Again I was like what the *beep*! So I use various different chargers and my GS3 doesn't even recognize any of them that they are charging, EXCEPT for the stock Samsung charger that came with the GS3 which takes a very long time to charge and once it's fully charged and I take it out, it immediately drains to a low percentage. So I switched batteries with a friend of mine who had a high percentage, and I booted into CWM, and I wiped data/factory reset I wiped dalvik cache, and cache partition, and I reflashed my ROM. No fix. Same Problem. So I try many different ROMS, and every ROM I try. No fix. Same Problem. Even the very stable ones which supposedly have not many problems. I thought unrooting and going back to stock firmware would work. That's exactly what I did and... No fix. Same Problem. I downgraded to ICS and... No Fix. Same Problem. I have tried everything that people on XDA and other forums have said would fix the problem, and the problem is still there and it seems like it's not going anywhere.
SORRY FOR THIS LONG THREAD.
PLEASE PRIVATE MESSAGE ME ANYTHING THAT WOULD FIX THE PROBLEMS OR ANSWER IN THIS THREAD.
ANY HELP IS GREATLY APPRECIATED!

Battery "recharging" without being recharged O.o - weird bug.

Hey there
Here's something that really bothers me as I barely ever know about the exact status of my battery. As you'll see in the picture, the change condition would go up couple of times over the day. Here's the thing : I didn'tt recharge. It's just happening, the battery would discharge pretty fast - once the screen is off, the %-indicator would go up again. Now, as I happen to study engineering, I understand the laws of thermodynamics. It's a weird bug, it's not actually recharging. But how to fix it?
Same thing happened on LP, MM, different roms and yes I did wipe the phone, yes, everything, couple of times, several ways, even used LGUP for a full reset. I have three batteries, same issue no matter which I use.
Any clues?

[Q] SM-P600 weird (battery?) issue

This past week, I purchased a 2014 Note 10.1 off Craigslist. I did check it out before buying it, and the device is in pristine condition, including the screen. It booted fine, and I went partway through the setup (the guy had factory reset it) before closing the deal. It is the wifi-only model, 3G RAM, 8-core Exynos version. It's white if that matters.
Anyways, a while later when playing with it some more, completing setup, etc, it just died on me. I wasn't home, and didn't have a place to charge it until I got home, but just figured that despite the device having said the battery was 99% charged, the guy keeping it unused for a long time might have thrown off the battery calibration. My understanding is that a Li-ion battery has one or more cells, plus circuitry that protects against overcharging and undervoltage conditions, as well as tracking the current charge state. With lengthy non-usage, the circuitry's idea of the current charge can get out of sync with reality, so I figured a few charge-discharge cycles would get it back in shape.
However, the situation after I got home turned out to be a little more complex. If I plug in the device to a power source with enough current (like the charger it came with, or my 2.1A USB outlet by my bed), it will run just fine while plugged in. However, upon unplugging, it would die quickly. Naturally, I assumed the battery was probably shot, so resigned myself to spending $50 on one. This is where it started to get a little weird. It seemed that when I booted into either fastboot or Odin mode, it would stay on much longer than normal, while unplugged. I'm talking hours, rather than between several seconds and several minutes while booted into the OS proper.
This lead me to believe that perhaps it wasn't my battery itself, but rather a glitch in the OS that was causing it to shut down. When I say shut down, I mean an immediate full-off state, not a nice shutdown or one preceded by low battery warnings. It just clicks off like a light that's been turned off. However, trying several different firmwares, including a couple custom ones, has not yielded any improvement. The issue remains.
The device was stock 5.1.1 when I bought it. I tried flashing KitKat (various images downloaded from SamMobile), but for some reason, it would still say it was running 5.1.1. I tried xKat, as in this thread. That results in 4.4.2 with the associated customizations, but the shutdown issue remains. I tried CyanogenMod 13, as instructed here. It works fine, notwithstanding the same issue. In between the stock firmwares (pushed to the device with Odin) and the custom ones, I would do a full wipe through TWRP.
I've popped the back off, disconnected the battery, waited a bit, and reconnected it.
Now my question: does anyone have any idea what's going on? If it's a dying battery, then why does the device say it's got a nearly full charge, and why no low battery warnings? Why would Odin mode or recovery (TWRP now) seem to keep the device powered up so much longer? Sure, they draw less power, but hundreds of times less power? I doubt it. If it's some hardware issue with the chipset/motherboard/etc, then why does it only manifest when running on battery, or a low-current USB connection? If it's an issue with Android itself, then why does nobody else seem to have this issue (googling revealed nothing that matched my symptoms), and why did several different versions exhibit the exact same problem?
I really don't want to spend money on a new battery and wait a few weeks for shipping if there's something else I'm missing that could get my device functional for free and a lot faster.
My tablet had a similar issue, in that when you would get to the 15% mark, I had maybe 3-5 minutes before it would get to 0% and abruptly turn off. I used the battery calibrator app for rooted devices, followed the instructions, and now all is good again. For me, I noticed a variance from what the OS was reporting and twrp was showing in between flashing. For what its worth, I'm on the KitKat bootloader, and haven't used an official Samsung firmware since KitKat. Oddly enough, the battery calibration having been off survived through lollipop and into marshmallow. Hopefully you can get your tablet back on track.
Sent from my SM-P600 using XDA Premium HD app
Thanks for your reply.
siralsmooth said:
My tablet had a similar issue, in that when you would get to the 15% mark, I had maybe 3-5 minutes before it would get to 0% and abruptly turn off.
Click to expand...
Click to collapse
That's a bit different from my issue. Even when the device reports full charge, if I unplug it, it usually dies within seconds, and always within 2-3 minutes.
siralsmooth said:
I used the battery calibrator app for rooted devices, followed the instructions, and now all is good again.
Click to expand...
Click to collapse
I don't think that's going to make a difference for me. From what I was reading, all it does is delete the batterystats.bin file (hence the root requirement), which doesn't have anything to do with calibration for most devices. It just contains the stats for how much battery drain various things have caused, during this 'running on battery power' session. It's also reset every time the device is charged. Read here for more info.
Furthermore, even if this were not the case, I'd conclude that wiping the system partition (indeed, all partitions except recovery) would have cleared this data.
Still, that said, it's conceivable (though exceedingly unlikely) that some of these calibration apps might do something else, such as talk to the battery circuitry at a low level. Since I've got nothing to lose, I will probably give a few of them a shot. Do you happen to know which one it was that you tried?
siralsmooth said:
For me, I noticed a variance from what the OS was reporting and twrp was showing in between flashing.
Click to expand...
Click to collapse
In my case, the values seemed to track pretty closely, and with numerous freshly-flashed versions exhibiting the same issue, I'm pretty sure at this point it's not a software glitch. I've resigned myself to ordering a new battery. I just wish I was certain that it would fix the issue.
siralsmooth said:
For what its worth, I'm on the KitKat bootloader, and haven't used an official Samsung firmware since KitKat. Oddly enough, the battery calibration having been off survived through lollipop and into marshmallow. Hopefully you can get your tablet back on track.
Click to expand...
Click to collapse
My understanding is that the bootloader doesn't change with flashing. I might be wrong though; is there a way to check the version?
Just a heads up. I ordered a new battery, which arrived yesterday. It seems to have completely solved the issues I was having.
My guess is that Android itself monitors the battery more diligently, and takes a more conservative approach to preserving battery life by shutting down when the voltage drops too low, while recovery mode would just let it run down completely flat (not good for Li-ion cells).
It's a moot point now, because it all seems good.

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