Howdy!
I think my battery is fooling me around.
Quick context:
- It's a Galaxy Tab 4, 10.1", model SM-T530.
- Android version 5.0.2.
- I received it at Chirstmas in December 2014. I barely used it until June (by that I mean maybe used it 5 times for 20 minutes). The point I'm making: I did not overwhelm or overuse it.
The problem:
I've just opened my eyes and realised some oddities... And since yesterday, I'm "actively investigating" my battery, reading a lot and "gathering data".
First thing, battery strangely draining:
Today when I switched on my Tablet, it was a 65%. I used it from 12:51 to 12:59 and it was then at 52%. I was just playing a game called "Final Fantasy Record Keeper" which does not seem to be too heavy (regarding the graphics). I put the Tablet to sleep by pressing the power button as usual.
Then I had to leave, 30 minutes after, I'm at my desk, I take out the Tablet and it's now at 42%. The tablet was in sleep mode all the time (I have a password so it wasn't possible to switch on and stay on).
I play some more and decide to use a stop watch. The battery drained from 42% to 15% really quickly, with on average around 30 seconds between each percent.
I put the Tablet to sleep again.
A couple of minutes after, I check and it's at 11%.
It takes me 30 seconds to get the cable and plug the charger. Before I plug the Tablet to the charger, I can see the battery percentage plummeting 9%... 5%... 4%... 3%... In a couple of seconds...
I plug the Tablet in.
3% to 5% in a glimpse, 8%, 9%...
Second thing, battery strangely charging:
After 1h09min, it's at 66%
After 1h44min, it's at 72%
After 2h15min, it's at 78%
After 2h46min, it's at 81%
After 3h20min, it's at 84%
After 3h39min, it's at 87%
After 4h09min, it's at 90%
After 4h21min, it's at 92%
After 5h10min, it's at 94%
After 5h18min, it's at 100%
As I don't use my Tablet often, just for hobbies, I generally just put to charge overnight and I never really checked the charging speed.
This is the first "set of data" I can provide, I will definitely look cautiously into that in the following days, hopefully under some insight from you.
Note:
I was all day with Wifi on. Even when it was charging. Everything else is off. And when I use it, the brightness of the screen is always on the lowest possible level.
Thank you very much for your first diagnosis!
Have a good day/night,
I also have that tablet but the 530nu variant and i have similar issues and even weirder i just shut it off as it was at 5% plugged it in and it said 0% charger on the powered down battery screen. Turned it back on not 2 minutes later and magically it was at 93%. Just to summarize it went from 0-93% in ,literally , 2 minutes of charging and while writting this and a few othet things, about 10 minutes since powered on its only dropped one percent. How do i access the system battery files? I am rooted so i can get into any file i want.
Sent from my SM-T530NU using Tapatalk
I have SM-335 and I have been trying to charge it for the last two days and all what I managed to achieve is 56% I have not been using it, mostly trying to get it fully charged. I noticed when checking the battery usage that WiFi was draining the battery, even when switched off to charge!!!! The other functions, like mobile network signal is constant and off when the tablet is off but WiFi bar is solid, even when the device was off. Charging is intermittent too although the cable was connected most of the time.... Next step I try is hard reset but this can't be the only solution
I had that problem on my t535. From 100 to 0 in 2-3 hours. Then when i turn it on after some time, it shows 1% but tablet works for about 5 hours on that 1%, or if i connect charger without turning on it shows 0% but when i turn tablet on it shows about 90%. I asked Samsung for new device, and i got it. Now is different story, my 6800mah battery charges in about 3:40-4 hours, and lasts about 9-10 hours(screen on time). I think thats hardware problem, because they wouldnt gave me new device if it was software problem.
Related
I just found another painful bug....this one is related to charging (battery). I normally put my qtek on charge all through the night when I go to bed. For the last 4-5 days I have been unplugging the device when it showed 100% charge, put it on standby (no wifi,btooth,gsm etc.) and made sure there were no applications running. I usually leave it in the standby state for 2 hours while I finish my morning exercise.
whenever I return, I see a power loss of 20%!! I was shocked to see how I could loose 20% in 2 hours ith my device on standby mode. this time, I even made sure I pressed the power button before I closed the lid, and still...no luck :-( I still lost 19%
I guess the problem is, when the charger is connected and the battery gets completely charged, it stops charging further. I guess it reaches a fully charged state within 2 hours, and the battery starts to drain all through the night...and wm5/htc don't start charging once again when the levels go down....i'll have to do a cuple more tests until I can totally confirm that this is the bug...until then, are anyone of you guys experiencing the same problems?
Another thing I forgot to mention, once again I charge my battery from 80% to 100%, and it lasts through the entire day(12 hrs) and drops to only 40% with highhh usage (bluetooth ON throughout, gsm on with 3hrs talktime, and some light gprs usage). so it really is not a problem of my battery as I see it!
Cheers,
San
Hmmm. I hate to say, but I don't see that problem. But I do have the unlocked JasJar Universal from HTC, not the qtek. If this happens with other qtecs, maybe they load a custom software that is acting up. In fact, I could leave the device on for two straight hours off a 100% charge and I don't think I'd lose 20% unless the phone was on too.
DaleReeck said:
Hmmm. I hate to say, but I don't see that problem. But I do have the unlocked JasJar Universal from HTC, not the qtek. If this happens with other qtecs, maybe they load a custom software that is acting up. In fact, I could leave the device on for two straight hours off a 100% charge and I don't think I'd lose 20% unless the phone was on too.
Click to expand...
Click to collapse
have you tried charging your device for well over two hours before unplugging? (around 8-9 hours of charging for instance?)
I don't really think it has anything to do with the qtek rom/device. the qtek rom has the least ammt of customisations on it...
I still suspect that the charging process halts and it starts to drain the battery....but the os doesn't reinitiate the charging process once again....hmm
I'll have to wait till tomm before I can do another round of checking....tomm, I want to charge it....and before I unplug, I'd remove the battery and put it back and see what it indicates...I suspect that the power would have already dropped to ~80% by then...that's the only explanation I can think of at the moment....
San
Hi Dreamtheater!!!
I exactly follow you as far as charging is concerned and I hv a Jasjar....just to inform you...I started charging yesterday at 11.30 PM and just got up to see the charge..it is 100%...no power loss...
hdubli said:
Hi Dreamtheater!!!
I exactly follow you as far as charging is concerned and I hv a Jasjar....just to inform you...I started charging yesterday at 11.30 PM and just got up to see the charge..it is 100%...no power loss...
Click to expand...
Click to collapse
it shows 100% for me too...but in just 2 hrs, it drops to 80% which is weird! from then on, it drains normally...
I still need some time to nail the exact cause for the problem...hmm!
S
Hey dreamtheater, I charge my Exec overnite everynite just like you. Usually at least 7 to 8 hrs everynite, but I have yet to experience what you mentioned here. My Exec always start fresh from 100% and by the time I get home at nite, it will drop to about 70% so no, I'm not getting the batt drain issue like you do..
I did not experience any such behaviour with my Qtek. It charged fine over night and had 100% battery when unpluged.
Are you sure your's does not wake up for some reason after you suspend it?
Dreamtheatre, I charged my XDA Exec overnight (7 hrs) and after 2 hrs with GSM/UMTS radio on the unit lost 5% battery charge.
@DT,
You need to set the device to switch off after a specified time interval. This can be done by going to start>settings>battery>advanced and check the device timeout box. I usually set it to 1 minute.
Last night i was browsing on my JJ and fell asleep while doing so, IE and notes and inbox applications were still open. When i started, the battery level was 93%, i browsed for about 10 minutes over Wifi before i fell asleep. The device shut itself off and when i woke up the battery level was 82% which is prportionate to my 10 min WiFi use and probably 1 minute standby time before it shut itself off.
Try it out, i'm sure you will stop seeing the massive battery drain
Cheers.
Another thing. Contraty to what people think, keeping the universal's battery topped off improves battery life. Prevent it from dropping all the way to say 30% or so. You will notice the difference in battery life in just about a week or so
Another source of battery drainage i've found is when i'm charging my Exec from the USB connection on my PC - If I leave my Exec connected and put my PC into standby, it will literally suck the life out of the battery over the course of a few hours!
I think some of you have got me wrong...let me restate the problem...
I charge all night
Wake up with 100% charge
Pull off the charger
Leave it on standby for ~2 hrs (no apps running, gsm, wifi, all off)
Come back, and find a ~20% drop
Back to my findings now.......
Another morning, no luck :-(
It had 100% charge...I pulled off the battery, put it back in and restarted....still showed 100%, so I guess it really was fully charged after all. This time I turned off receive incoming beams as well....left it for a couple hours, and was disappointed to see 82% when I got back :-(
However, through the day I get excellent battery life....all day's use ends up consuming roughly 30-40% charge which is excellent compared to my prev xda2 which would comparitively loose all of it by eod. I guess if I park my device in flight mode it tends to start draining quickly....now that's my only available reason or cause that I can think of....
tomm I guess I won't put the device on flight mode and leave it just On instead. This is weird because its just me having this problem :-(
San
PS: I'm using the regular ac charger itself for charging...hmm
DT, I disabled PowerSave and switched off the GSM/UMTS radio on my Exec. After about 8 hours I had lost about 30% charge. So your 20% does seem high. It could just be the battery as loss of charge is not linear. Why not let it drop to say 60% and then do your test again. By the way there spare batteries seem to be available now for the Universal.
Hey guys... first post, here we go!
I got my nexus over a week ago and to my surprise everything was perfect (ordered three of them, had to RMA two due to screen problems). Now I'm thinking of RMAing this one as well.
So everything was fine until two days ago I decided to charge my phone by plugging it in to my computer's USB port. Since then the battery (or the battery reading) is acting weird.
It seems that when I charge my phone through USB and then unplug it, it literally loses a % every minute, and then would stop at lets say 10%, and that 10% would last me for a good 45 minutes of screen time. My battery used to discharge one percent at a time, but now it seems like it's stuck on a certain percentage, and then some time later it drastically drops. The battery app sort of confirms that... there always used to be a steady line going down. Now it's always a straight line (battery not discharging), and then a sharp vertical line going down).
I charged my phone to a 100% with a power outlet just now, it seems to be discharging normally again. I am at 93% now, the phone was charged 4 hours ago, screen time is 15 minutes. Is this normal? Seems sort of normal to me.. I can't tell what normal is anymore. I am able to get about 3.5-4 hours of screen time (unless I am playing GTA vice city, then two hours at most).
BetterBatteryStats doesn't show anything too suspicious, there are no partial wakelocks however the phone does stay awake a little bit longer than screen time, but just a tiny bit — it's still in deep sleep mode most of the time.
Is my battery malfunctioning? Should I RMA? I have two days to decide, urgh.
beegbear said:
Hey guys... first post, here we go!
I got my nexus over a week ago and to my surprise everything was perfect (ordered three of them, had to RMA two due to screen problems). Now I'm thinking of RMAing this one as well.
So everything was fine until two days ago I decided to charge my phone by plugging it in to my computer's USB port. Since then the battery (or the battery reading) is acting weird.
It seems that when I charge my phone through USB and then unplug it, it literally loses a % every minute, and then would stop at lets say 10%, and that 10% would last me for a good 45 minutes of screen time. My battery used to discharge one percent at a time, but now it seems like it's stuck on a certain percentage, and then some time later it drastically drops. The battery app sort of confirms that... there always used to be a steady line going down. Now it's always a straight line (battery not discharging), and then a sharp vertical line going down).
I charged my phone to a 100% with a power outlet just now, it seems to be discharging normally again. I am at 93% now, the phone was charged 4 hours ago, screen time is 15 minutes. Is this normal? Seems sort of normal to me.. I can't tell what normal is anymore. I am able to get about 3.5-4 hours of screen time (unless I am playing GTA vice city, then two hours at most).
BetterBatteryStats doesn't show anything too suspicious, there are no partial wakelocks however the phone does stay awake a little bit longer than screen time, but just a tiny bit — it's still in deep sleep mode most of the time.
Is my battery malfunctioning? Should I RMA? I have two days to decide, urgh.
Click to expand...
Click to collapse
dude, cool down, it's all good... if you get 3-4 hours screen time, it's all ok. sometimes androids start acting weird battery wise. if you see strange things happening with your battery, reboot the phone. if this doesn't help, power it off and charge it up to 100%. unplug it and do not power it on for 60 minutes.
power it on then, it should be ok then. if not, another reboot then always fixed it for me (and all my other android-devices).
best regards,
hallu
The battery on this phone has been great. I have been charging it only if it is below 20% when I go to sleep. Typically every 2, 3, or even 4 days. Last night it was at the end of its 2nd day of light use and the battery was at 57%. I turned sound off and left it on but not charging. This morning the phone was off. When started I got the critical battery message and it showed 2%. Plugged phone in to charge and then the battery level immediately went to 56%.
Any ideas what could have triggered the phone to think the battery was at 2% and shut down?
Battery screen in settings shows the 56% level too. Shows on for 2 days and 6 hours - screen use 33%, cell standby 20% and the rest looks normal... Except that it shows wifi at only 3% of use. This seems odd as the phone has been on my wifi system more than half of the 2+ days. Shows connected to it now. Does 3% for wifi make sense?
Thanks!
Will_T said:
The battery on this phone has been great. I have been charging it only if it is below 20% when I go to sleep. Typically every 2, 3, or even 4 days. Last night it was at the end of its 2nd day of light use and the battery was at 57%. I turned sound off and left it on but not charging. This morning the phone was off. When started I got the critical battery message and it showed 2%. Plugged phone in to charge and then the battery level immediately went to 56%.
Any ideas what could have triggered the phone to think the battery was at 2% and shut down?
Battery screen in settings shows the 56% level too. Shows on for 2 days and 6 hours - screen use 33%, cell standby 20% and the rest looks normal... Except that it shows wifi at only 3% of use. This seems odd as the phone has been on my wifi system more than half of the 2+ days. Shows connected to it now. Does 3% for wifi make sense?
Thanks!
Click to expand...
Click to collapse
I've not seen that behaviour on my Note 3, but I seen something similar on my Galaxy nexus that turned out to be the micro-USB pin had been slightly bent out of shape, causing the thing to occasionally think it was charging when it wasn't and other weird stuff.
OK - Thanks. That is definitely something different. In my case the phone thought it was at 2% and shut itself off. Then when I powered up the phone, it gave the critical battery warning and said it was at 2%. Then immediately upon plugging in to the charger, it said it was at 56%. I then unplugged the phone and it has been fine since. So the powering off and the 2% warning was in error. Strange. If nobody has seen this behavior before or has any idea why it might do this, I guess I will just think of it as a misfire of some sort and hope it does not happen again.
Will_T said:
The battery on this phone has been great. I have been charging it only if it is below 20% when I go to sleep. Typically every 2, 3, or even 4 days. Last night it was at the end of its 2nd day of light use and the battery was at 57%. I turned sound off and left it on but not charging. This morning the phone was off. When started I got the critical battery message and it showed 2%. Plugged phone in to charge and then the battery level immediately went to 56%.
Any ideas what could have triggered the phone to think the battery was at 2% and shut down?
Battery screen in settings shows the 56% level too. Shows on for 2 days and 6 hours - screen use 33%, cell standby 20% and the rest looks normal... Except that it shows wifi at only 3% of use. This seems odd as the phone has been on my wifi system more than half of the 2+ days. Shows connected to it now. Does 3% for wifi make sense?
Thanks!
Click to expand...
Click to collapse
it seems to be software bug.
Flash Stock ROM or repair it by kies
:good:
Try cycling the battery. (drain till it won't come on, charge with the phone turned off, turn on at 100%)
I've owned my Note 4 since October 2014 and it's been working solidly since. Last Thursday, out of nowhere, I noticed that from a 14% charge, it suddenly dropped to 4%. I immediately scrambled for a charger and charged it back up to 100%. On Friday, I charged my battery normally again. Charging finished at 11 AM but the drain was abnormally high. My phone was warm to the touch and battery was dead in 4 hours. I was using the phone normally throughout that time, 4g on, location services/bt off, screen off for the most part. I ran OS monitor to see whether any app was locking up the CPU, but, as expected, the main CPU users were Android System and Android OS.
On Saturday, I charged the phone to full again, disconnected around 4 pm. Being that I was home, both wifi and 4g were off. Battery discharged normally, and was only down to 30% on Monday morning.
On Monday, I noticed that battery dropped from 21% straight to 11% straight to 4% in a few seconds. The drain from 4 to 3 to 2% was decent (few minutes of screen on time, on viber), then the phone shut off. I tried to charge the battery with the device powered off, but noticed that the phone simply stopped charging at 80%. I thought that was an abnormality. I tried wiping the system and app caches, but the problem persisted and drain still felt pretty fast. Tuesday night, the phone stopped charging at 91%, staying at the same level for 40 minutes before I gave up and unplugged.
My friend had purchased a fake OEM Note 4 battery and allowed me to try the drain/charge process using his battery to troubleshoot. When I first plugged his battery into my phone, the drain was high at about 1 percent per minute. When I tried to charge the battery, the charge level would not go beyond 90%. I switched on safe mode, but the battery did not charge any further either. I felt by then that something was definitely wrong with my phone. When I restarted the phone to get out of safe mode, though, it suddenly started charging again and hit 100%. With regular use, the fake battery gave me 16 hours of power, which I thought was relatively decent. Alas, when I started charging it again, it stopped charging at 77%. Battery Monitor Widget showed 0 mA flowing into the phone at the time, though the battery indicator in the status bar showed the lightning bolt.
I took out the fake battery and put in my original. It is now charging up normally, but I expect charging to stop before I hit 100%.
If anyone could provide possible explanations for what could be going on and/or other troubleshooting tips to try, I would really appreciate it. A factory reset would be my last recourse.
Thank you very much!
EDIT: My battery went all the way up to 100% this time. But it's the same one that got stuck (at 80% then at 91%) twice in the past.
I'm using two different Samsung chargers and different cords, by the way, and blew out the port with air prior to attempting to charge the fake battery that still stopped at 77%.
I had the same issue, took it to Samsung and they replaced the battery, it has been okay since that
tigsandmitch said:
I had the same issue, took it to Samsung and they replaced the battery, it has been okay since that
Click to expand...
Click to collapse
Really? I was ready to write off my battery and just buy a replacement, but what was weird was that even the newish fake battery wouldn't charge fully. That's what made me worried that it's my phone that's the problem.
It'd be great if this could be as simple as a battery problem.
Hey all
I've noticed something of late with my OP6T. When I charge it to 100% and take it off the charger, it drops ~5% very quickly seemingly without any wakelocks/alarms that cause it. Does anyone else experience this? Is there something I can do about this or is the battery just on it's way out? It's a little strange as the device is only 1yr old. I bought it around 9 Nov.
Here are some of the screens from BBS attached. As you can see it doesn't look out of the ordinary.
Another strange thing is that once it reaches around ~95% then it will start to act as normal, so it takes MUCH longer to go from 95 downwards.
What's going on here?
Other things tried:
- root and run battery calibrate
- factory flash fastboot images
- use custom kernel
All show the same issue so far. This did not happen at all until recently. Any help would be appreciated!
UPDATE: I let the battery drain completely and had the phone self-power off, then powered it up a couple more times until the "Battery too low, charge before use" sign started coming up. Once that happened, I plugged the phone into a slow charger, turned it on and left it to charge. I plugged it out when I went to bed (at 100%) and it seems to be all good now. Woke up 6 hours later with the phone at 98%.
Just in case anyone else is having the issue, give that a try.
Banshee1221 said:
UPDATE: I let the battery drain completely and had the phone self-power off, then powered it up a couple more times until the "Battery too low, charge before use" sign started coming up. Once that happened, I plugged the phone into a slow charger, turned it on and left it to charge. I plugged it out when I went to bed (at 100%) and it seems to be all good now. Woke up 6 hours later with the phone at 98%.
Just in case anyone else is having the issue, give that a try.
Click to expand...
Click to collapse
Battery percentage is a estimate. Discharging it fully and charging it only makes the estimate a bit more precise. I remember on my old phone that it could drop 40 percent in 15 minutes and when you put the device away in your pocket it could go up about 5 percent.