As title, has anyone experienced this? If I shut it down when finished with (yes definitely shutting it down and not putting it into sleep mode).. I come back to it in the mornings, boot it up, once loaded it shows around 60% ish battery left...
I shut it down to save battery, but I'm pretty sure it wouldn't use as much just being sat there!
40% overnight is massive, the battery icon on the status bar does not seem to update that quickly. Maybe its not really at full charge when you turn it off. I only lose 10-15% overnight in sleep mode.
Yeah!
I also lose up to 20% in sleep mode overnight.
But I experienced other strange battery behaviour.
Uptime 3 days:
- Day 1: 2h playing games (86% at complete shutdown)
- Day 2: 2h playing games (66% at complete shutdown)
- Day 3: at boot 20% --> WTH?!
So, yeah I also experienced this, but it was one-time only (yesterday). Or I wasn't paying attention because the tablet isn't mine.
Don't know!
EDIT: After 2 days (day 5) of complete shutdown the tablet was still working for 15 minutes with only 2% battery left. It's now being recharged.
I think the battery status is corrupt and needs to be reset.
I think it can be done with deletion of "/data/system/batterystats.bin" file (ROOT users only). --> I didn't try this method myself!
Related
I recently flashed to JM5 + Lagfix 2.3, installed a few apps and played around with the phone until it dropped to 15% battery.. charged it to 100% and went out while i was on the way to my destination i was just exploring around the UI getting to know andriod a little better and I noticed my battery % was dropping like 1% per 1min.. I have the mod for battery indicator with %. my total unplugged time was 2hrs+ my battery was down to 64%. Looking at the battery usage its saying that 75% of it was taken by the display and the run timer was 38mins.. i have the brightness level at 1/4 of the way and it seems to drain unreasonably fast.. all other process was at 2-3% usage only. This never happened when I got the phone for the first 3 days ( came with DXJG4 )
Wifi/bt/gps/autosync/bgdata are all off, using 2G network also and power saving for the display is also off.
Is my battery flakey or just the OS giving me the wrong information ?
Ok so i wiped my internal SD card and reflashed JM5 + repartition again and after booting my battery when to 68% from 53%..
EDIT:
Rebooted the phone and im now getting 56% LOL!
There's a thread about resetting your battery threshold in the development section. Try that.
previously when i reboot my phone, it'll fly from ~20% to ~50% lol. it's just some calibrating issue i think. i drained it to ~5% then charged it up until it NOTIFIES me that it's fully charged(ignore the battery meter / %), wait for the popup thing specifically.
works fine for me.
Ye, my battery just went from 48% to 3% in about 3 minutes. Does anyone have any idea why this is?
Same problem here. From about 43 % down to 7 % while it started to charge the battery with the original charger. Afterwards the Tab didn´t charge at all. Battery drained and got very warm.
I Called Vodafone and was told i have to send the Tab in for fixing. I hate waiting for the tablet 3 weeks.
Update: After 2 hrs. of waiting the Tab cooled down and i was able to start it again. Did a factory reset and was able to charge again with the wall mount charger.
Just wanted to bump this as my battery life is miserable and it discharges really fast in standby...
My HTC desire has been on for 52 hours, used for a lot of stuff and is at 20% battery.
The Tab charges to 100%, I unplug it at night and in the morning it has lost approx 10%, I leave it a few more hours and it't down to around 60%. This is with no use and no apps running!
I've tried killing apps or leaving them in memory and it doesn't seem to make much difference. I also use setcpu and have a profile where the CPU speed decreases when in standby to conserve battery?!
If I charge to 100% and use it constantly, I get fair life out of it maybe 4-6 hours of light use - some streaming over wifi, web surfing, kindle, sudoku etc. If I use it occasionally or heavily though, it dies very quick and if I leave it at about 40% on the evening, it's generally dead in the morning.
Why does it discharge so fast in standby??
Check to see if it continually searching for a signal. I've noticed that mine loses a lot of power constantly searching for a signal, cellular and wifi. So, I used airplane mode to conserve power. Remember that it syncs to different services that require it to periodically download data. That may be your issue.
Sent from my SCH-I800 using XDA App
Thanks Chuck, I use it in airplane mode all the time and only use web over wifi (bought unconnected in the UK). Would it still be syncing for email etc? I didn't think it could turn on wifi and sync itself but only when I turn wifi on. I always turn wifi off when not in use. I had problems with widgetlocker asking for superuser permission quite often and that killed the battery quicker so I removed that until it's fixed and saw an improvement.
I'm not seeing the times that other people are though, losing at least 10% overnight and there's nothing really running.
I installed battery doctor and the times it quotes are high for different types of usage and nowhere near what I'm getting.
I'll make sure email and calendar are set to manual update, adjust brightness etc and see what happens. It seemed better when I first got it so perhaps an app is draining it? I installed system panel to monitor this but it's hard to see what is actually draining it, any recommendations anyone???
Quite disappointed at the moment, ipads barely drop 1% overnight and I'd rather not have to turn it off to conserve battery when it should maintain it in standby...
Check the task manager and see what application are running. Also you can go in settings- about device - battery use to see if a specific application is using your battery out of normal. Also , the display is generally the battery hog, you may have set it to a super high level. One last thing you may have the buggy 3d gallery app, and it will show in the battery usage.
P_
this is an interesting problem. its very similar to the Apple Macbook Air.
The Macbook Air was very thin - very nice looking - however it needed to depend on wifi to do most things.
the association i am trying to build here is this: the Tab needs a bluethooth headset so you dont get all your calls broad-casted over speakers and that could drain the battery a lot.
for me the battery drainage didnt seem so bad and its been on for the last 36 or so hours. the battery icon didnt look like it moved so much and i was impressed considering this thing had a gigantic battery. then i loaded up a utility that read the battery and said i had 59% so my jaw dropped. not only is the battery indicator wrong there maybe rogue processes casuing the battery drainage. and this is on 2.2 which is supposed to be somewhat battery efficient.
i dont know - frustration is what i am all about here with this thing. it seems that every time i buy a new android device i want to move to another android device. no one is getting the damn thing correctly setup.
Am at work right Now, Charged the tab overnight, just few minutes ago my battery said 60% left and now the tab is completely dead, wont turn on, I ll wait until i get home to charge, fingers crossed.
Change the battery...
Sent from my HTC HD2 using XDA App
shubh.27hd2 said:
Change the battery...
Sent from my HTC HD2 using XDA App
Click to expand...
Click to collapse
its been charging for 2 hours now and battery is not even warm to the touch plus no power yet... if charging is what you intended....
more than 3 hours of charging and counting and still no sign of life...This device is just 8 days old today from Brand new...
mudstuff said:
Just wanted to bump this as my battery life is miserable and it discharges really fast in standby...
My HTC desire has been on for 52 hours, used for a lot of stuff and is at 20% battery.
The Tab charges to 100%, I unplug it at night and in the morning it has lost approx 10%, I leave it a few more hours and it't down to around 60%. This is with no use and no apps running!
I've tried killing apps or leaving them in memory and it doesn't seem to make much difference. I also use setcpu and have a profile where the CPU speed decreases when in standby to conserve battery?!
If I charge to 100% and use it constantly, I get fair life out of it maybe 4-6 hours of light use - some streaming over wifi, web surfing, kindle, sudoku etc. If I use it occasionally or heavily though, it dies very quick and if I leave it at about 40% on the evening, it's generally dead in the morning.
Why does it discharge so fast in standby??
Click to expand...
Click to collapse
I am experiencing the same thing. Tab on flight mode and charged to 100% overnight. Unplugged at 9am, still on flight mode with no apps running, and it is 88% at 2pm.
12% drop in 5 hours with no usage whatsoever is way too much imo, comparing let say to my HD2, even not in flight mode. Wonder if they have a bad batch of battery for certain tabs........
Just wanna report back after my last post. When the percentage was dropped to 85%, I did a reboot. And guess what, now it displays 95% !!!!!!
5% drop from the morning til now in flight mode seems right and okay. Does it mean the tab is miscalculating the percent left?
PS.
I have been following the voltage in Spare parts this morning. All settings are the same (no apps opened, same screen brightness and in flight mode. Only turn on to record voltage)
94% - 4087mV
91% - 4081mV
88% - 4075mV
85% - 4067mV
But then after the reboot
95% - 4040mV
Man, I am not sure whats going on here........
shinji21 said:
Just wanna report back after my last post. When the percentage was dropped to 85%, I did a reboot. And guess what, now it displays 95% !!!!!!
5% drop from the morning til now in flight mode seems right and okay. Does it mean the tab is miscalculating the percent left?
PS.
I have been following the voltage in Spare parts this morning. All settings are the same (no apps opened, same screen brightness and in flight mode. Only turn on to record voltage)
94% - 4087mV
91% - 4081mV
88% - 4075mV
85% - 4067mV
But then after the reboot
95% - 4040mV
Man, I am not sure whats going on here........
Click to expand...
Click to collapse
let me jump in here again and share a similar deli-ma i had with my X10i.
while i was messing around with some custom roms i decided to stick to one that looked somewhat nice. well the funny thing is the battery indicator would always display 100% and for about 4 hours it would drop ever so slightly. then i removed the battery and put it back in -- the battery indicator showed 0% and i got a red light flashing ....
after screwing around with it for a bit i re-flashed the stock firmware from Sony-Ericsson and magically my battery meter and my battery worked fine.
so to sum up -- it maybe a software issue like the one i had on my SE X10i above?
running a flashed stock 4.0.4 ICS ROM, Rooted.
everything was running great. battery life was one of the more amazing parts of this tablet. then one day last week i had it on the charger half the day, went to go grab it, wouldn't turn on.
after lots of button pushing, swearing, about 30 minutes of it, i put it back on the charger. 10 minutes later i got a blue battery symbol charging and i held down the power button for 30 seconds and it turned on. since then have had no issues with it working, except battery life is poor. the initial time after i used it, the thing lost like a percent every couple of minutes just sitting there. it was dead within an hour and a half or so, barely touched.
i charged it fully, and reset the battery stats via battery calibrator (even though google says that is useless), then i let it drain to 0 with usage and charged it up again. now the battery life is pretty average. i lose about 10% every half hour on wifi browsing the web, screen at anywhere from 15-30% via Lux, and checking to see if anything is running nonstop in the background. so that gives me only 5 hours of total battery life just browsing the web. before i was watching HD movies 2 hours long on almost 100% brightness with some browsing and messing about in the middle and losing 20%.
i have better battery stats installed and the tab is going into deep sleep very well. also it is barely utilizing full speed, it is rarely at 1.2ghz, usually at 500mhz or 200mhz if not deep sleeping.
a couple times i had some partial wakelock issues but nothing bad. but every other day, the battery life just goes fast just doing regular stuff. nothing unusual going on in the background.
anyone else have this happen?
if i do a full reset can that help? or is this a hardware failure and time to call samsung.
The best battery life I have ever had was on Quicksilver 0.9. I got about 13,5 hours with the display on (WiFi off and airplane mode on)...
On a stock rom u should get about 10 hours with the display on.
On cyanogen-mod ROMs I am experiencing the same thing as you. The battery is dead after ~7 hours.
I would suggest to restock the tab, wipe it and just run with the apps you really need. Maybe even try Quicksilver and to be 100% sure u could even flash the ROM when the battery is at 100%.
What does the battery stats in the settings-app say?
battery settings shows nothing that could be a culprit. this thing deep sleeps like a champ.
screen off just laying around i won't even lose a percent an hour. just all of a sudden i went from being able to browse the web on wifi for 10 hours, to 5. all after that weird time the battery drained super fast.
i wiped cache and dalvik cache, same thing.
going to try reflashing with the newer ICS posted recently. UK Q2 based and see what happens.
P.S. how long until i can post more than once every 5 minutes?
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%)
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.