this morning it was 100% and when i got home it was at 87% but after i did a soft reset it said 15% i did another resent and now its at 45%, i cant get it to read the batter correctly anymore?
charged for AROUND AN HOUR and how it says 100%
rsx19 said:
this morning it was 100% and when i got home it was at 87% but after i did a soft reset it said 15% i did another resent and now its at 45%, i cant get it to read the batter correctly anymore?
charged for AROUND AN HOUR and how it says 100%
Click to expand...
Click to collapse
i am having the same problem after MR2. it was abt 56% after a soft reset(Phone was really slow kind of hanged) wend to 15% and another soft reset back to 54%. some bug i guess
http://forum.xda-developers.com/showthread.php?t=682270
it seams that it is some bug but no one has found yet an solution..
come on guys, too focus on how bad the x2 is and forgot about the basic problems.. has anyone come to mind it might be the battery?? i had that problem too thinking i have overcharge the battery so when out and buy a new one now its all sweet.. and send the old one back SE they gave me a new one.
well hard to say but it is from the start-brand new battery and from the beginig..li-polymer battery are hard to overcharge-they can be charged even if they have 70% or 80% power still in it...but l have confirmed in Serbia several cases of battery issue-so are they all "overcharged"?
ive had at least a dozen mobile phones over the last decade and ive found with practically every one of them that if you do a reset or turn the phone off the battery meter will drop. this is nothing new and not specific to the X2 or even sony (ive had nokias and philips phones do it). i dont know if its because it takes extra grunt to restart the phone or it loses calibration or what. the battery meter guesses the percentage of power based on the voltage so its not an exact reading anyway. ive found that popping it on charge for a bit seems to sort it all out again.
anothadave said:
ive had at least a dozen mobile phones over the last decade and ive found with practically every one of them that if you do a reset or turn the phone off the battery meter will drop. this is nothing new and not specific to the X2 or even sony (ive had nokias and philips phones do it). i dont know if its because it takes extra grunt to restart the phone or it loses calibration or what. the battery meter guesses the percentage of power based on the voltage so its not an exact reading anyway. ive found that popping it on charge for a bit seems to sort it all out again.
Click to expand...
Click to collapse
it never happens to any of my phones. I mean sure, it drops by about 5 percent but that's if I am updating on the phone.
kronos1 said:
http://forum.xda-developers.com/showthread.php?t=682270
it seams that it is some bug but no one has found yet an solution..
Click to expand...
Click to collapse
not that it wont stop charging, its just the meter changes erratically with no reason, frim 90 to 4 back to like 50 just from a soft reset
but now how to stop charging?
when my phone is turn on and connected to a wall charger,then charger charge the battery to 100%..and that is that..but it still charging. when phone is off and connected on charger,then it charge to 98%..that is what it shows when i turn on the x2. l have tried battery calibration procedure and nothing..
I noticed this happened on MR1 when removing and replacing the battery (as we all needed to do soooo many times ). Something must be happening with the contacts. I just made sure they were clean and reinserted my battery and haven't had a problem since.
has anyone noticed that when you charge the battery
when the phone is switched off, that the battery does not stop charging? the big battery icon keeps going up an down even if you leave it charging all night? the icon is still showing charge..
**Charging Info**
Information from [email protected] back in February
'The Initial Charge should last about 4-6 hours or untill fully charge and should be recharged when possible'
BRAIN_STEW said:
Information from [email protected] back in February
'The Initial Charge should last about 4-6 hours or untill fully charge and should be recharged when possible'
Click to expand...
Click to collapse
that is not an answer, i've had my phone ever since january... after 3 firmware updates it's still the same
BRAIN_STEW said:
Information from [email protected] back in February
'The Initial Charge should last about 4-6 hours or untill fully charge and should be recharged when possible'
Click to expand...
Click to collapse
and this does what, i charged over night and i did a soft reset and my battery went down to 64% and another soft reset made it go up to 99%, what the heck
mathiosn said:
has anyone noticed that when you charge the battery
when the phone is switched off, that the battery does not stop charging? the big battery icon keeps going up an down even if you leave it charging all night? the icon is still showing charge..
Click to expand...
Click to collapse
That is now 4th confirmed..this is exactly what is happening
kronos1 said:
That is now 4th confirmed..this is exactly what is happening
Click to expand...
Click to collapse
i can confirm that too.
My previouse post is a guidline for charging.
With Li-Po's if you over charge them they discharge, this is a well know fact for RC cars/planes that run Li-Po's which is why they have charges with so many settings to get optimal performance and warnings and cut off when fully charged if the cut off/discharge does not take place it makes the Li-Moss (dendrites) unstable, when they get long enough they can short out the battery and cue explosion
When on charge for a long period have you noticed that the battery gets rather hot, and after 30/40 mins it is cool again?? this is because it has been over charged and is discharging to stop it from exploding. it also explains why even tho its been on charged all night its only at %60 odd because the discharge has taken place.
and i have just been told by a work friend that HP are doing a re-call because of the above.
BRAIN_STEW said:
My previouse post is a guidline for charging.
With Li-Po's if you over charge them they discharge, this is a well know fact for RC cars/planes that run Li-Po's which is why they have charges with so many settings to get optimal performance and warnings and cut off when fully charged if the cut off/discharge does not take place it makes the Li-Moss (dendrites) unstable, when they get long enough they can short out the battery and cue explosion
When on charge for a long period have you noticed that the battery gets rather hot, and after 30/40 mins it is cool again?? this is because it has been over charged and is discharging to stop it from exploding. it also explains why even tho its been on charged all night its only at %60 odd because the discharge has taken place.
and i have just been told by a work friend that HP are doing a re-call because of the above.
Click to expand...
Click to collapse
All this you provide is ok,but problem was from the start-brand new phones were bought and from start this happens..so SE sold us defect battery? Funny, but there is no point to talk about over heat and overcharge when simple..battery icon large one when phone is off do not stop or go off display few people tried 9-12h and it still is there. Battery is no hot..it is hot after 2h-little hot..after that phone is cold. l believe that something is wrong with registry keys for charge time..l am not a programmer or developer but l dont think that we all fu*** up our batteries ..this is not a first phone to us..so we are not amateurs in usage of battery charge.
i dont understand.. why would you turn off the phone to charge it? it does appear there is still an error but this isnt necessary and wont charge the phone any faster or more efficiently.
anothadave said:
i dont understand.. why would you turn off the phone to charge it? it does appear there is still an error but this isnt necessary and wont charge the phone any faster or more efficiently.
Click to expand...
Click to collapse
Some times l do not want to be disturbed and if battery is low l turn off the phone...and plug it to charge... obviously there are no body who thinks that this bug is annoying.
This is my first device with such a bug,and because l deal with mobiles(l had over 100 devices and use them form last 10 years) never cross to such a issue..and nobody know how to solve this bug.
Related
Hi all, i have developed this weird problem in my jasjar and i'm sure it's some settings that need to be changed somewhere and not the battery itself. When i first got the jasjar, it gave me a good 48 hours battery backup on standard use but i lost my charger and started using usb to charge it. it's since then that my jasjar drains the battery in less than 12 hours. i have tried replacing 3 batteries but to no better effect. I remember reading something about the Li ion polymer batteries having the memory effect or something and how to reset that in the bootloader mode. if you guys could help me figure it out and fix the problem, i'd appreciate it! here's the details of my rom.
R:1.13.00
G:42.47.p8
D 2.01.06 wwe
the rom is the wm6 from jwright.
(nb: i had the same problem with my shipped wm5 rom and i thought upgrading it would help but it didnt apparently).
How long do i need to use the battery to check the drain thingy. the reseller tells me to use it for 2 weeks before judging it. i'm screwed with having no battery life to this otherwise beauty of a device! if i could get any help, it would be much appreciated. thanks in advance. (josh).
Had the same problem, been happening all week, the phone would just switch of even though it registered over 80% charge. no i am happy again because i read on the forum that you need to totally discharge the battery occationally for it to get to a full charge, it appears that there is some sort of memory effect where the battery thinks it is nearly discharged, try it, i am sure you will find that it workes.
Had the same problem, been happening all week, the phone would just switch of even though it registered over 80% charge. now i am happy again because i read on the forum that you need to totally discharge the battery occationally for it to get to a full charge, it appears that there is some sort of memory effect where the battery thinks it is nearly discharged, try it, i am sure you will find that it works.
awright...i'd try it. thanks for ur help.
mayer said:
Had the same problem, been happening all week, the phone would just switch of even though it registered over 80% charge. now i am happy again because i read on the forum that you need to totally discharge the battery occationally for it to get to a full charge, it appears that there is some sort of memory effect where the battery thinks it is nearly discharged, try it, i am sure you will find that it works.
Click to expand...
Click to collapse
thanks..
I too has a similar problem but this method did not solved my prob as my jasjar switches off by itself at 40%.
I had a similar problem a couple of weeks ago as a charge would last less than 24 hours when I used to be able to last 2-3 days.
Soon sorted it when I found that the Jasjar had decided to disable the automatic switch off, now a charge is back to lasting 2-3 days.
Mike
Had my MDA PRO for 1.5 years, and never had this problem. Battery lasted for 2-4 days on average, although now I have a 3200mAH battery it lasts for well over a week on a single charge
Lithium ION and Lithium ION Polymer (the HTC Universal uses the latter) do not suffer from any "memory effect". The only battery type that does to any significant extent is Nickel Cadmium, which is rarely used these days.
It's also impossible (well, almost) to completely discharge Lithium ION Polymer batteries - internal circuitry in the battery shuts down the cells when the charge gets too low, at up to 10% charge. This is because a completely discharged L.I.P. battery becomes unstable, broken (unable to be recharged), and runs the risk of explosion or leaking in this state. So don't attempt to drain those batteries completely dry folks - it's dangerous! Letting them run down naturally in your Universal should be safe though because of the cut-out mentioned above.
Maybe the Uni just has a large batch of bad batteries? You should also check what apps you have running on it all the time, and how often you use bluetooth and wi-fi - these two REALLY drain the battery if you keep them on all the time... Also try MemMaid, this is great at cleaning up your notifications queue, which is where lots of apps leave old and obsolete entries clogging it up.
I have the same problem. I do not know where the charger is, so I am always using the USB while syncing. I also tried 2 batteries, but they both last about 12 - 14 hours. Maybe it is caused by WM6.
I did not quite get this solution:
"Soon sorted it when I found that the Jasjar had decided to disable the automatic switch off, now a charge is back to lasting 2-3 days.
Mike"
What is the solution?
2 421....:
sorry for lang. the above understands(i hope)
nastavenia(settings)/napajeni(power)/rozsireni(advanced) tam zaskrtnes co xces a nastavis casy. ak pouzivas phonealarm musis aj tam. pozri si aj podsvirtenie(backlight).
btw aj had the same prob. appeared after 6mnth. i bought new battery. btw here is several threads with same prob. try 2 look for solutions there(imho its only one-new batt.)
I feel like I'm walking on eggs...I bought my Jasjar used on eBay just over a year ago, still the original battery. I almost never use the 110v charger, always a USB conection with my Mac, often recharging at 55-75%. I just intentionally ran down my battery to 18% (got warnings to recharge), and recharge via USB/Mac again. It took me almost 4 days to get to 18%, and Bluetooth is constantly on for ready use with my earpiece.
Curious: are the problems with original or replacement batteries? Cheers,
Update to Radio 115 or 114
It's worth taking into consideration that when flashing, you really need to have a full battery. There are reports of batteries starting this kind of behaviour after user has flashed with drained battery, then causes battery charge issues until next reflash.
IMHO even if u charge with a full charged battery still u get a prob so i think its a common issue with the jasjar and its power managment software itself by default as lot of people with diffrent ROMs are complaining about it.
no changes...
well, folks, i tried all these gimmicks but not to any definite changes ... i guess i need to consult the service center guys at last...i didn't want to do that but i guess i need to. i'm sure it's not my battery as i've replaced 3 of them...i dont kno what else to do!!! thanks for ur posts tho as i get to try diff things to check if ma battery is doing ok...keep postin...thanks...
josh.
how 2 discharge a battery >>>>>
problem with battery?
I have the same problem, it firs appear on original battery when charge was 40-50% so I have bought the same battery model (1620mAh). But it doesn't help. Now I,m using the 3200mAh battery and it doesn't help as well. The thing is that XDA switch off it self always on deferent charge level (sometimes is on 20%, 45% ar 80%...so is very difficult predict when it happen again). And one more thing...when it switch-off and I try to switch-on back, I can't (keep switching off), only slolution is put on charger!!!
I have downloaded the service manual (I think called "confidential") and it mentioned that it could be a problem with main board (so its HW problem). So can anybody tell me is a problem with bat or MB? (replacing the MB is fcjfdj$#ing expansive). Thanx.
well if your XDA does not switch on until you start charging it that's a clear indication that your battery is empty. I have the same with my faulty battery. Replaced it by a working one and it's fixed. Something is definately messed up with the charging circuit or the batteries though. They are not supposed to die so easily.
SpyderTracks said:
It's worth taking into consideration that when flashing, you really need to have a full battery. There are reports of batteries starting this kind of behaviour after user has flashed with drained battery, then causes battery charge issues until next reflash.
Click to expand...
Click to collapse
The first time I flashed the PDA I ruined my battery. This time I thought I'd be smart and I put in the old battery while flashing. After flashing I put back the new battery and now that one is broken too! It wasn't even in the PDA when I flashed it. How bizarre is that?
I have to admit I did not fully charge that new battery before flashing, but I figured it would be safe since it wasn;t in while flashing. The battery worked fine the day before I flashed my phone (got the "charge now or save your work" message), but after the flashing and putting it in, it just crashes at around 30% or 40%. The usual battery misery.
Maybe I should try fully charging it and then flashing again. Trouble would be how to get it fully charged though. I always felt charging cuts off early on the "broken" batteries (pull the charge plug and stick it back and it charges for a while again).
I managed to restore my battery to good health by completely discharging it in bootloader mode.
First I completely charged it. When the led went green I pulled the shcarge cable and connected it back again. After doing this a few times it doesn't stay orange so long and then I stopped and left the cable disconnected.
I reset the phone (on full battery) and then I set the unit to boatloader and waited for it to completely discharge. I reset the phone again (on empty battery) and low and behold my trusty "charge now or lose data" warning came back.
BTW I reset the PDA hoping maybe it would store the power levels. I remember that trick from my Palm days where sometimes you had to reset a PDA on full battery to calibrate it.
I charged it back to full capacity and started using the phone as normal. When the battery was empty I got no crash but a friendly warning telling me my battery was going low. Phew.
Will try the same with my other troubled battery over the weekend.
I have the same Issue.But , I think it's about Rom.
and I'm try a lot of ROM version ,only one Version canbe use more than 3 day.
I can't find any reason ,.
discharge in bootloader ,I do it ,But battiery is same time for used.
Been running Android for over a week now and this morning when pulling the phone of the charger I noticed it was only at 89%. This is from a full overnight charge.
Got to work and it had dropped to 85% (Watching videos) and plugged it into my laptop at work and it again only charged to 89%
Anyone else had the same issue. Will cut back to Windows to see if it goes further.
dusty_nz said:
Been running Android for over a week now and this morning when pulling the phone of the charger I noticed it was only at 89%. This is from a full overnight charge.
Got to work and it had dropped to 85% (Watching videos) and plugged it into my laptop at work and it again only charged to 89%
Anyone else had the same issue. Will cut back to Windows to see if it goes further.
Click to expand...
Click to collapse
Hello dude!
Try removing the battery, wait a few minutes and put it again. See what happen.
Sometimes it is a error when the driver is "reading" the battery settings/status.
Hope it help!!
Same with me, only 90% with all night chage
Same here mine will only charge to 93% while charging overnight
Rebooting into womo and it then proceeded to charge to 100%.
Not a major but a bug that needs investigating.
also had this issue a user responded to me on the builds thread, he said to let it run down to 5% and plug the charger back in. also the one about booting to wm then back on android should fix it.
Same here at 94%. Seems to be a common problem...
Sent from my HTC HD2 using XDA App
im getting 96%.
psykick5 said:
Same here at 94%. Seems to be a common problem...
Click to expand...
Click to collapse
Yes, I've got a same problem.
I've heard that no Charging-Stop exists (in kernel), so you may "destroy" your battery because it is overcharging ... so be careful
mine stops at 93%
yeah im a bit scared for my battery...ive been charging it almost twice a day now cause it dies so fast
i even have SetCPU with the profiles from the other thread, but its still draining REALLY fast...
i hope this doesnt have any permanent damage to the battery :S
HD2_Noob said:
I've heard that no Charging-Stop exists (in kernel), so you may "destroy" your battery because it is overcharging ... so be careful
Click to expand...
Click to collapse
where did you hear that? can you confirm?
The no stop sounds like complete nonsense. For one, it would be an obvious massive problem so the devs would have worked on it. Two, if you can detect battery charge it would be really easy to make it stop. Three, if it didn't stop, why did it used to halt at 98% for most people?
Originally Posted by Cotulla View Post
I want to explain state of Android porting, because a lot of inconsistent information around.
1)DATA (3G, GPRS, EDGE) isn't working fully yet. Even with "MTU fix" it lost a lot of TX packets (it's why upload speed on speed test so slow)
2)Battery: at current moment extended battery not supported (2350 mAh). Support of them rather complex however.
also battery working in read only mode, it's why during long android usage u can get wrong results. Will be fixed in future.
Hard reset..is only one solution
Actually _everyone_ can get this problem - after reboot u won't able to launch any external exe (exe from rom will work).
It happen because something sometimes can be corrupted during WM shutdown...
I got this problem two times Both time need to hard reset device.
So I recommend to everyone make backups!
So is it confirmed that robot voice (apt voice ) issue fixed now?
^^
confirm problem
read this before post
I have the same problem. HTC wildfire.
Try recalibrating the battery:
1. Turn off all uncessesary apps in the background.
2. Let the battery of the phone run out until it turns its self off.
3. Take out the battery for 2 minutes
4. Put the battery back in and charge the battery until it is fully charged "At least 4 hours"
5. Once it has charged take the battery out for 2 minutes then put it back in and boot the phone up
I managed
The phone was on and charging all night and it was at 97%. I turned off the phone and left it plugged for couple of hours, on and its 100%. Simples
So I noticed something weird about my phone. When you go to menu>settings>about phone>battery usage, it tells you when you last unplugged well my phone does not seem to reset that timer always . I can plug it in for a couple hours and take it off charge (battery level does increase) and it will still say i have been unplugged for X amount of hours. Anyone have this issue. Never happened in any of my previous android phones. Btw stock Nexus S 4g, Im truly stumped on this and looks like no one else has this issue.
I think it only resets once the battery becomes fully charged.
Thats what it seems like its doing but i know my previous android devices would restart the timer when i would plug in even for a second or when i turn off my phone and turn it back on granted my last phone was a Epic on 2.2 so i don't know if that makes a difference. This one only seems to do it at a full charge like you said hmm interesting. Other people having the same results?
I've seen it before. I once had it going to five days. I tried restarting the phone, but didn't work. Had to clear battery stats in recovery but like you said you're stock.
yes, since gingerbread, battery stats reset only if you keep charging until 90% or more. I have a nexus one and with 2.2 it reset every time, but not anymore.
Okay good to know its just a gingerbread 90% thing because i thought something was messed up. thanks!
Did you used the USB-charger? Then it won't reset the timer.
Sent from my Nexus S using XDA App
Yes I am using the Stock charger in my PC or plugged into the wall plug it wont reset it until it hits a high battery charge level.
Soo i fully charged to 95% last night and when i took it off this morning the timer still didn't reset hmmm at this point im tempted to go around root and clear my battery stats
No one has mentioned the battery usage graph (hard to notice, but there behind the "Time since last charge" message on the top) which shows battery usage over time since last full charge, including interim partial charges as hills...
difrent7 said:
Soo i fully charged to 95% last night and when i took it off this morning the timer still didn't reset hmmm at this point im tempted to go around root and clear my battery stats
Click to expand...
Click to collapse
I am now getting this problem too where it doesn't reset, even after it charges overnight and hits a high charge amount (94+%). Did you ever figure out a way to get it to reset to 0 sec on battery without resetting battery stats?
"Show low low battery logo" Nexus 7 thinks battery is dead even when fully charged!
I have already got a replacement on order from the Play Store but since I haven't seen any reports on this after plenty of searching I figured I'd describe the issue.
My 16gb Nexus 7 worked pretty much flawlessly for the first several days of pretty light use minus very minimal flicker on occasion. As of two days ago the unit is basically unusable as it randomly but excessively decides that the battery is dead even though it is fully charged. The first several times this happened I wasn't paying attention and I thought it just shut off by itself, but then I started to watch it more closely but it also started happening more and more. As of this morning it will not stay on more than 5 minutes before it audibly notifies a low battery with the messages "Connect Charger" and "Powering down". Sometimes it will give two options "Battery" and "OK" but I was never able to actually get the buttons to respond because it would already be shutting down. Other times it will just show the connect charger and powering down messages with no buttons which is strange, but in either case the device shuts down.
Once I started troubleshooting I figured out a little more information.
Watching the lock screen while it is charging I will see it go from it's (I think) correct charge percent to 0% randomly.
While not charging it will either show a red battery indicator in the notification area or just an empty battery when it decides to shut down
Sometimes it will boot right up and be back up to regular charge level (of course just to shut down again within a few minutes)
Other times it will not boot up and I noticed the error message (almost like a debug prompt mistakenly left in the code) in the upper left corner "Show low low battery logo" + some strange symbol like when you get 100 1-Ups in Super Mario Brothers . Yes the message has the word "low" twice - I guess this is lower than standard low!
Anyway, kinda bummed but since I have not seen any other report of this particular issue I'm hopeful that the replacement will not have the same problem. I'm just hoping I don't get a unit that has some of the other problems being reported so I'm crossing my fingers.
Mine started doing the same this morning
Sent from my LT26i using xda app-developers app
This sounds pretty similar to my problem from another thread. Every time it hits 25% while discharging it dies. Normally I'd say it's just a software calibration issue and fixable by wiping battery stats, but I've wiped several times at 100% and run down to 25% and it still dies.
Do you find that you still get a normal amount of battery life before it dies? It'd help to establish whether this is the battery misreporting, or actually not discharging properly.
* Strangely this time after my N7 had died at 25% I turned it on and it's at 0% battery. It's been charging for ~15min and it still says 0%... When you all first got the device, did you let it run to 0%, or did you charge it right away?
** And now, after almost an hour, it's at 1%. Seems to be charging, but brutally slowly (and I'm using the bundled charger, not PC USB).
omnikai said:
This sounds pretty similar to my problem from another thread. Every time it hits 25% while discharging it dies. Normally I'd say it's just a software calibration issue and fixable by wiping battery stats, but I've wiped several times at 100% and run down to 25% and it still dies.
Do you find that you still get a normal amount of battery life before it dies? It'd help to establish whether this is the battery misreporting, or actually not discharging properly.
* Strangely this time after my N7 had died at 25% I turned it on and it's at 0% battery. It's been charging for ~15min and it still says 0%... When you all first got the device, did you let it run to 0%, or did you charge it right away?
** And now, after almost an hour, it's at 1%. Seems to be charging, but brutally slowly (and I'm using the bundled charger, not PC USB).
Click to expand...
Click to collapse
Yours sounds like a similar but different issue. My N7 dies regardless of how much charge it has. It can have 100% charge and within 5 minutes it will report 0% charge and die. Then when I can get it to boot again it will be back up to 99% charge again. I can't get more than 10 minutes of use before it dies regardless of how much charge it truly has.
omnikai said:
This sounds pretty similar to my problem from another thread. Every time it hits 25% while discharging it dies. Normally I'd say it's just a software calibration issue and fixable by wiping battery stats, but I've wiped several times at 100% and run down to 25% and it still dies.
Do you find that you still get a normal amount of battery life before it dies? It'd help to establish whether this is the battery misreporting, or actually not discharging properly.
* Strangely this time after my N7 had died at 25% I turned it on and it's at 0% battery. It's been charging for ~15min and it still says 0%... When you all first got the device, did you let it run to 0%, or did you charge it right away?
** And now, after almost an hour, it's at 1%. Seems to be charging, but brutally slowly (and I'm using the bundled charger, not PC USB).
Click to expand...
Click to collapse
I'm starting to have this same issue, however mine goes at about 19%. Just turns off. I have also seen the show low battery in white text thing. I have tried calibrating by fully charging then deleting batterystats.bin from data/system and letting it decharge and it still died around there, I'm recharging again to 100 to see what happens this next time I let it go... thought mine was issue free than this happens
Well in case anyone else runs into this, I have no idea what caused this or how I got out of it thinking it was dead at 20%. I tried deleting the stats, reflashed stock and then CM10 and back again, tried a different kernel, and still died at 20 and gave me the "low low battery logo".
I just took it into Gamestop where I got it and started the process for an exchange, so I have another one coming now. Go figure when I got home I plugged it back in, and now this time just like omnikai said instead of being at 20% it was at 0 when I turned it on. Been a while and now and seems to be charging normally so hopefully it will decharge fine.. either way really weird only problem I've had with mine so far
** Just wanted to edit and say its now decharging normally dont know what caused it to spazz out or fix it one of those ghost in the machine android moments
NeoMagus said:
Well in case anyone else runs into this, I have no idea what caused this or how I got out of it thinking it was dead at 20%. I tried deleting the stats, reflashed stock and then CM10 and back again, tried a different kernel, and still died at 20 and gave me the "low low battery logo".
I just took it into Gamestop where I got it and started the process for an exchange, so I have another one coming now. Go figure when I got home I plugged it back in, and now this time just like omnikai said instead of being at 20% it was at 0 when I turned it on. Been a while and now and seems to be charging normally so hopefully it will decharge fine.. either way really weird only problem I've had with mine so far
Click to expand...
Click to collapse
Replacement N7 seems to be fine thusfar...
Apparently, somebody in StackExchange is having the same issue as well:
http://android.stackexchange.com/questions/27222/nexus-7-system-error-show-low-battery-logo
if anyone else gets this, try disconnecting the battery and then re connect and see if that fixes it. i had same type of issue on viewsonic g-tab and that was the required fix.
Mine did it at 10%, calibrated the battery and im getting truly awesome battery life 2 full days without a charge
Sent from my SAMSUNG-SGH-I717 using xda premium
---------- Post added at 02:54 PM ---------- Previous post was at 02:52 PM ----------
This is the app
https://play.google.com/store/apps/details?id=com.nema.batterycalibration
You need to be rooted
Sent from my SAMSUNG-SGH-I717 using xda premium
Same problem here when battery reaches 24% whole tab dies...
Did someone fixed it?
egomezmorales said:
Mine did it at 10%, calibrated the battery and im getting truly awesome battery life 2 full days without a charge
Sent from my SAMSUNG-SGH-I717 using xda premium
---------- Post added at 02:54 PM ---------- Previous post was at 02:52 PM ----------
This is the app
https://play.google.com/store/apps/details?id=com.nema.batterycalibration
You need to be rooted
Sent from my SAMSUNG-SGH-I717 using xda premium
Click to expand...
Click to collapse
While this reply is late to the game, it needs to be pointed out that such apps are 100% snake oil and do not calibrate the battery. They are based upon gross misinformation and any dev that tells you that clearing batterystats.bin has any effect on battery life or reported battery charge clearly doesn't know how Android works.
Sent from my Galaxy Nexus using Tapatalk 2
Beekhouse said:
Same problem here when battery reaches 24% whole tab dies...
Did someone fixed it?
Click to expand...
Click to collapse
Have you fixed this yet cos mine does the same?
I had been having the same problems that everyone described: would suddenly die at 25% and wouldn't turn back on unless I gave it a charge for a bit and then held the power button down for a while.
For the last 2 weeks, I've been charging it only with the stock charger and that seems to have fixed it. Previously I would charge with any charger I had around.
Not sure if it's a permanent fix but it's working now (I've taken it down to 4% before charging it back up).
AdamK123 said:
I had been having the same problems that everyone described: would suddenly die at 25% and wouldn't turn back on unless I gave it a charge for a bit and then held the power button down for a while.
For the last 2 weeks, I've been charging it only with the stock charger and that seems to have fixed it. Previously I would charge with any charger I had around.
Not sure if it's a permanent fix but it's working now (I've taken it down to 4% before charging it back up).
Click to expand...
Click to collapse
I only use the stock charger on mine but after this happened so often I tried another one and battery charged OK but then kept blipping from say 50% to 54%, went bed with it at 49% and this morning dead again. Charged it again today on stock charger and waiting to see what happens.
Sorry all for this bump.
I just got this same issue tonight on stock, unrooted nexus 7 16gb and I only use the stock charger, I let it die through battery and then when I charged it amend turned it on, all these problems happened.
One symptom that hasn't been mentioned is that the clock is set back to January 1st 1am.
I managed to get it to start without turning off by holding the power button until the Google logo showed twice, at the moment it's on but charging.
Hope this doesn't become a problem again in the future.
NeoMagus said:
Well in case anyone else runs into this, I have no idea what caused this or how I got out of it thinking it was dead at 20%. I tried deleting the stats, reflashed stock and then CM10 and back again, tried a different kernel, and still died at 20 and gave me the "low low battery logo".
I just took it into Gamestop where I got it and started the process for an exchange, so I have another one coming now. Go figure when I got home I plugged it back in, and now this time just like omnikai said instead of being at 20% it was at 0 when I turned it on. Been a while and now and seems to be charging normally so hopefully it will decharge fine.. either way really weird only problem I've had with mine so far
** Just wanted to edit and say its now decharging normally dont know what caused it to spazz out or fix it one of those ghost in the machine android moments
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Click to collapse
I am currently having the 20% problem. Did your tablet reaminworking normally since the self correction?
A Probable solution to the nexus 7 dying at 15% + charge
dbstrat said:
I have already got a replacement on order from the Play Store but since I haven't seen any reports on this after plenty of searching I figured I'd describe the issue.
My 16gb Nexus 7 worked pretty much flawlessly for the first several days of pretty light use minus very minimal flicker on occasion. As of two days ago the unit is basically unusable as it randomly but excessively decides that the battery is dead even though it is fully charged. The first several times this happened I wasn't paying attention and I thought it just shut off by itself, but then I started to watch it more closely but it also started happening more and more. As of this morning it will not stay on more than 5 minutes before it audibly notifies a low battery with the messages "Connect Charger" and "Powering down". Sometimes it will give two options "Battery" and "OK" but I was never able to actually get the buttons to respond because it would already be shutting down. Other times it will just show the connect charger and powering down messages with no buttons which is strange, but in either case the device shuts down.
Once I started troubleshooting I figured out a little more information.
Watching the lock screen while it is charging I will see it go from it's (I think) correct charge percent to 0% randomly.
While not charging it will either show a red battery indicator in the notification area or just an empty battery when it decides to shut down
Sometimes it will boot right up and be back up to regular charge level (of course just to shut down again within a few minutes)
Other times it will not boot up and I noticed the error message (almost like a debug prompt mistakenly left in the code) in the upper left corner "Show low low battery logo" + some strange symbol like when you get 100 1-Ups in Super Mario Brothers . Yes the message has the word "low" twice - I guess this is lower than standard low!
Anyway, kinda bummed but since I have not seen any other report of this particular issue I'm hopeful that the replacement will not have the same problem. I'm just hoping I don't get a unit that has some of the other problems being reported so I'm crossing my fingers.
Click to expand...
Click to collapse
I recently started having the same problem with my 2 month old rooted Nexus 7 (wifi only) . It was dying at about 19% - 23% charge . Tried doing the battery recallibration at 100% charge, even wiped the device clean and flashed the Jellybean 4.2 factory image but it didn't work.
I talked with the ASUS service center guys to get it fixed, and created a sort of guest user so that I won't have to disconnect my accounts. After that my problem seems to have been fixed. I discharged it to about 4% and then put it to charge, it's charging properly now so I am hoping the problem has been fixed.
I am not sure whether this would work for everybody, but I guess it's worth a try.
I have this strange issue with the battery calibration.
At first i thought the battery was dying on me. It normally stay active to 35-44% and then the OS would just suddenly report the battery is dead and just turns off.
Then i just boot into TWRP recovery and leave the screen on. And it's able to stay on for another whole hour at maximum screen brightness till it actually dies.
I tried deleting the battery stats in the data folder and letting it drain to 0%. But the OS still thinks it's out of juice around 35-44%...despite the fact that it can stay on for another hour or so in TWRP recovery.
Is there anyway to adjust the capacity of the battery in the OS?
Hi,
When this happened to me (but with 20%), all I did was letting the battery drain and charge it fully while turned off. Don't know if it actually works, but it solved my issue. Give it a try .
Good luck,
~Lord
"This Story Ends Where It Began" - Octavarium (Dream Theater)
Sent from my GT-I9505
Funny, I had just about the opposite problem. It was stuck at 35-45% while charging, or it would only go up about 1% every 20-30 minutes. Sloooowwww. Same solution seemed to fix it--let it drain to shut-down, recharge with power off to 100%. It seems to charge faster with power off, but I haven't done an a-b test to verify.
So I just started getting this after the update to 5.0 on my N10.
Beforehand I never noticed anything, although its been a few months since i have used it till a really low battery.
But I updated to 5.0. Used it for a while, the OS registered like 70% battery and then instantly 0% and it shut down. So I booted to the bootloader to see and it ran just fine for a while. I got bored and booted it back up, immediately shut down.
I plugged it in and booted it up and it was a 0% for a LONG time before it ever registered as actually charging. Then it charged normally until it got to like 25% and then instantly to 100%.
Im hoping its just a calibration thing, I did a factory reset just to be safe but it still did it. I guess the next steps if it still does it after a few cycles is to install a custom recovery and clear stats.
Same thing here
I've got almost the identical issue as the OP. Tablet shuts off without warning around 35-40% batter. When I reboot it says 0% battery and immediatley shuts down. If I boot into recovery mode though it will stay on for 2-3 hours before dying. I tried this and then charged it to full overnight with the device powered down and still today it shutdown again around 40% battery. Tried a battery calibration app before too but nothing has fixed it. This is 4.4.4 stock rooted with xposed. Been happening for about 2-3 weeks now. I'm pretty sure it's got to be software related right?? Anyone find a fix yet?
Just posting to say I'm seeing the exact same thing. It also just started happening since the update to Lollipop. It is shutting down at about 30-40%, then when I turn it back on it is at 0% and will shut down immediately unless it's plugged in. However, like the rest of you also said, in safe mode it'll stay on for a while longer without being plugged in. We really need a way to calibrate the battery somehow. This is a very frustrating problem. No warning at all!
I also have this problem.....this updates are so bugged.....
Sent from my Nexus 10 using XDA Free mobile app
I have the exact same issue
After a full charge it's saying I only have three hours left on the battery. Battery life is really poor. I'm not sure if the battery is worn out (I've had the tablet since it came out) or if it's from the update.
Same same.
Just had the same start yesterday. Was charged to 100% ran a high intenssity game for an hour (makes my cell phone heat up and kills the battery like mad) but it was NOT affecting the 100% charge. I thought 'thats funny' then it started to go down some then it hit about 55% then BAM. Drops to zero and shuts off.
After that it would not take a charge no matter what I did but then for no particular reason except I was lazy and didnt wanna have to boot it up again after I plugged it in, I left it plugged in and went to take a nap. Came back an hour later and it had charged to 43% after having been at zero for about 20 minutes after I left the room.
Now its stuck at 43% and wont charge any higher. I'm leaving it alone for a few hours to see if it will ever get to 100% then ill run it down to zero then charge it over night turned off to 100%.
Ive been reading this as a battery calibration problem and came across a HUGE variance on the net about what to do about 'that'.
Some say the charge to 100% drop to 0% charge to 100% will calibrate it. Some say thats old Ni-Cad tech and you shouldnt do that with the Lithium Ions. But then others say you should do it with the Nexus 10 because it DOES calibrate the battery and that the tablet software protects the battery from actually going to zero%. (Saves a few percent and shuts off).
But then also someone else said battery calibration only works via a hardware change inside the tablet and that we are actually talking about conditioning. But then someone said conditioning is the max storage and that the 40% to 0% drop is not conditioning and since the charge discharge charge is for conditioning a Ni-Cad it wont help. Around we go.
There was also mention of a samsung PHONE having a problem with a bent usb pin inside the phone. But you had to pop the battery to bend the pin and since you cant do that a on Nexus 10 that doesnt help. (Plus the pin doesnt look bent to me even though about 30 people chimed in saying it helped them. But that was all phones.)
And finally. One website says you have to root the nexus 10 and use a batter calibratino app to calibrate it as option a but option b was some crazy combination of charge to 100 discharge for an hour, charge to 100, discharge for an hour, charge to 100, discharge till your aunts pink underwear falls off or something equally strange.
I'm betting based on you guys os upgrade bug. Just too strange. My 2 year warrenty ran out last month but I hadnt turned it on in six. Maybe thats a good thing. Be stupid to send it in for repair only to find out it was software.
Have to see if after my full cycle charge-discharge-charge it works again.
Prayin for everyone's devices. This sucks.
Misery loves company...
Schwanke said:
Just had the same start yesterday. Was charged to 100% ran a high intenssity game for an hour (makes my cell phone heat up and kills the battery like mad) but it was NOT affecting the 100% charge. I thought 'thats funny' then it started to go down some then it hit about 55% then BAM. Drops to zero and shuts off.
After that it would not take a charge no matter what I did but then for no particular reason except I was lazy and didnt wanna have to boot it up again after I plugged it in, I left it plugged in and went to take a nap. Came back an hour later and it had charged to 43% after having been at zero for about 20 minutes after I left the room.
Now its stuck at 43% and wont charge any higher. I'm leaving it alone for a few hours to see if it will ever get to 100% then ill run it down to zero then charge it over night turned off to 100%.
Ive been reading this as a battery calibration problem and came across a HUGE variance on the net about what to do about 'that'.
Some say the charge to 100% drop to 0% charge to 100% will calibrate it. Some say thats old Ni-Cad tech and you shouldnt do that with the Lithium Ions. But then others say you should do it with the Nexus 10 because it DOES calibrate the battery and that the tablet software protects the battery from actually going to zero%. (Saves a few percent and shuts off).
But then also someone else said battery calibration only works via a hardware change inside the tablet and that we are actually talking about conditioning. But then someone said conditioning is the max storage and that the 40% to 0% drop is not conditioning and since the charge discharge charge is for conditioning a Ni-Cad it wont help. Around we go.
There was also mention of a samsung PHONE having a problem with a bent usb pin inside the phone. But you had to pop the battery to bend the pin and since you cant do that a on Nexus 10 that doesnt help. (Plus the pin doesnt look bent to me even though about 30 people chimed in saying it helped them. But that was all phones.)
And finally. One website says you have to root the nexus 10 and use a batter calibratino app to calibrate it as option a but option b was some crazy combination of charge to 100 discharge for an hour, charge to 100, discharge for an hour, charge to 100, discharge till your aunts pink underwear falls off or something equally strange.
I'm betting based on you guys os upgrade bug. Just too strange. My 2 year warrenty ran out last month but I hadnt turned it on in six. Maybe thats a good thing. Be stupid to send it in for repair only to find out it was software.
Have to see if after my full cycle charge-discharge-charge it works again.
Prayin for everyone's devices. This sucks.
Click to expand...
Click to collapse
Suffice it to say I've been seeing this issue as of Android 4.4.4... NONE of the posted recalibration techniques seem to work and as usual, Google non-support is just as useless. As far as I can tell, once in this state it's here to stay... I've had my N10 shut down at 28%, 37%... even as high as 55%, and on re-charge (if I do it turned on) it charges to a point and then shoots straight up to 100%. I've seen the "takes forever to get above 0%" issue too... none of this has happened in any consistent fashion. I had hoped that friggin lollipop would solve this but instead they added a host of OTHER annoying bugs: as in after I restart it, the tablet goes into an optimization mode where it decides it has to re-optimize all 362 apps I have on the wretched thing. There naturally are a few others but they are beyond the mainstream of this evening's symposium....
Same exact thing is happening to me, but I'm on 4.4.
Same issue for me toosince 5.0 (now 5.1.1 BlissPop)
I'm gonna try to see if after my full cycle charge/discharge/charge it will work again...
Same issue for me too, since 5.0
Same issue for me too, since 5.0
to all of you how had had battery charging problems, please advise y you have used the "magenetic" charging cable. (It charge to a 25% higer rate)
I don't know how... I don't know why... After nearly 10 months of this behavior... I recently went through a couple of charge cycles (after it dropped to zero yet again) without letting it drop to zero.. AND NOW IT'S FINE!!!! I have no clue why... None of the stupid on-line non root solutions worked... I think that it's possible for this thing to recover after a random sequence of events which unfortunately cannot quantify because I had pretty much given up.
Sent from my Nexus 10 using XDA Free mobile app
I am getting the same experience as most of you. Tablet shuts off at around 45% saying there's zero battery left. I assumed it was the battery going bad.
Sent from my Nexus 10 using Tapatalk
Well technically the battery starts going bad (yeah it's not supposed to... but nothing lasts forever) once you start running the discharge/charge cyle over and over again. To be sure my N10 is more than a few years old and while depending on use it can last a few days... it sure doesn't go quite as long as it did between charges as when it was brand-spanking-new. That said, and as said in my more recent post where I thought that the battery was borked, it now will last around two days with heavy use and about three with moderate use... and it now discharges appropriately to near zero warning me to connect the charger without just dying at 30-50 %... and the charge profile is a smooth curve from low to high with no sudden jog to 100% once the charge indication hits 60-65% like it did before. That would *seem* to indicate to me that this is far more a software issue than a battery one, and that purchasing a new battery may "fix" the problem but it won't FIX the problem! i.e. it'll only be a matter of time before it comes back. For all I know, some recent update to some google app took care of it...
After updating from CM11 to stock 5.1.1 I got the same problem. My N10 switch emmidiatly off at 70% battery. It was fine with CM11. Any news on this? Did a battery calibration, but this didn't helped.
I'm also getting this problem for the first time on the Temasek CM rom from 11/05/2015. It seems to have come up only since the 11/05 version.
Still no solution!?
I am having this issue (I think) since I received the update to Lollipop. So, basically it is a bit more than a year now. I was hoping a Marshmallow update would solve it, but: nope!
For installing Marshmallow I also did factory reset and all that stuff: it does not fix the problem...