Database Users

Another battery drain problem - driving me CRAZY!!

I know there are already a lot of discussions on battery drain and believe me, I have read every single one of them. However, I think mine is slightly different:
When fully charged and using WIFI for 10 minutes, 10% of juice will be used. Listening to MP3 for 1 hour will also use another 10%. Overall, battery life is really bad but the key is it only happened suddenly. It have been very good up till now.
I have tested this on another battery and have exactly the same results so it is not battery related. I have also hard reset the phone and tested the battery with nothing installed and it still drains. A full charge only lasts me like 4 hour of very light use.
I installed Battlog and the power consumption is around 90 which I think is pretty low, but at times, even with this low consumption, I can see the battery usage literally falling before my eyes, like 5 % in 5 minutes.
I have also tried the HTC battery test, i.e. fully charged the battery, turned on plane mode and full brightness. After one hour, it only used 8% which I thought is normal. However, if I start using the phone by just simply clicking around, it will start dropping.
I believe the phone is fine on standby but once it starts doing things, even simple operations like moving around folders, it starts consuming a lot of power.
This all happens after an overnight charging episode when I noticed that the light stays amber in the morning and the percentage stays at 80%. I soft reset the phone and it immediately show 100%. This has never happen again but my battery usage is never normal since.
All in all, I think it is somehow hardware related, like the battery gauge is bad or the charging is never complete but it still shows green. It is still under warranty but I think will be very difficult to convince the service centre that there is something genuinely wrong with the phone.
P.S. Should also mentioned that I am using the stock telstra rom and have also cycled through the batteries twice before testing.

I had the same problem...
You should try resetting you battery:
1: let your battery drain to 0%
2: fully charge your battery while keeping your phone off!
this solved the problem for me..

Fenixz said:
I had the same problem...
You should try resetting you battery:
1: let your battery drain to 0%
2: fully charge your battery while keeping your phone off!
this solved the problem for me..
Click to expand...
Click to collapse
I had actually "reset" the battery but only drain it to 5% before recharging as I have read that it is not safe to drain to 0%. I'll try to completely drain it tonight and recharge. Will report back.
btw, I noticed that when the battery is charged to 100%, the led stays amber for about 15-20 minutes before turning green. Is this normal or should it turn green immediately after reaching 100%?

Tried completely draining the battery and charge overnight but have no effect. The problem persists. So this is definitely not a battery problem.
I guess the last thing I can try is charging the battery with a standalone charger or another HD to see if there is problem with the charging mechanism in my phone.

The latest Telstra rom seems a bit better on battery

led amber
The led amber must turn to green
immediately after unplugging.
some thing is wrong with your charge
system .

aidinali said:
The led amber must turn to green
immediately after unplugging.
some thing is wrong with your charge
system .
Click to expand...
Click to collapse
aidinali, can you please explain what you mean? I thought the led will go off if you unplugged the charger. My problem is that after reaching 100% as indicated on the phone, the led stays amber for another 15 minutes before turning green.

Well , I'll correct & explain more....
1-when you reach %100 ,the led will turn to green immediately (if you’r phone is plugged in).
2-if you unplug ,the led will turn off (as you said ).
The problem is that since the battery meter in HD has not been defined by percentage , it doesn't match with
Apps like battery level or battlog .so when you see %100 on them , it' s not "real % 100 ".

I believe there is something wrong with the phone as the percentage usage and charging status do not match. However, since the basic HTC software does not have any battery usage in percentage, it’s hard to convince the service centre that something is wrong.
Any software that shows the battery as a percentage all have the same reading, so I assume they all rely on the mainboard for that information. There is obviously something wrong with either the charging process of the phone or draining more battery than it needs during usage.

I have 100% exactly the same problem as in the original post.
Does anyone else?
I have also tried 2 batteries and had exactly the same results with both, so I also know it is not the battery. The only app I have installed other than Dutty's 6.5 rom is Tomtom which does not need to be run for any of these issues to occur.
Any chance on warranty? I think it's software...

Try a different ROM. I've been having the same problem. I just flashed a new ROM about an hour ago (partly because Dutty's 6.5 kept freezing). I'm hoping both problems will be solved now.

i've found the latest radio rom to make a big different to battery life. 1.14.25.24_radio
the previous radio rom (1.13?) did suck the juice and made battery last 2 days less than 1.14

Try charging with a different charger. Ie. connect a USB cable on your PC and charge it from there.
I've had very similar problems with the stock charger a month after i got my TouchHD, and ended up testing with my old P4350 charger and all problems went away.
I've had similar drains even witch WiFi off, no emails, exchange or 3G access...
Now i'm getting a whole day's usage and i'm left with 30-40% battery, with 2 hours average talk time

I've tried with a number of chargers.....battery still sucks.
I've just switched from Dutty's to Energy ROM, radio is 1.14
If anything...energy drains more quickly than Dutty's
It says it drawing 350mA

Ok, I've used Energy ROM but now using Dutty's Leo. The only thing I've loaded so far is Battery Guard which say it's drawing 98mA when on standby(ie....backlight goes off). That'sa massive difference on the 250mA readings I used to get....now all I have todo is figure out which program I'm loading that is killing my battery.
That still only equates to 12 - 13 hours on a good standard battery with no use at all.

samlives said:
Ok, I've used Energy ROM but now using Dutty's Leo. The only thing I've loaded so far is Battery Guard which say it's drawing 98mA when on standby(ie....backlight goes off). That'sa massive difference on the 250mA readings I used to get....now all I have todo is figure out which program I'm loading that is killing my battery.
That still only equates to 12 - 13 hours on a good standard battery with no use at all.
Click to expand...
Click to collapse
Standard battery should last longer. Sounds like your battery may be slightly faulty. Make sure you let battery drain fully before charging, and always try charging with device off. Should help improve strength.

I had same problem when i flashed miri's rom, hd got warm and didn't last, it cooled down in standby, the answer to my problem was that the wifi was not set to save battery mode, once i set it to save power everything was ok

Used 8% in 24 hours
Fallen Spartan said:
Standard battery should last longer. Sounds like your battery may be slightly faulty. Make sure you let battery drain fully before charging, and always try charging with device off. Should help improve strength.
Click to expand...
Click to collapse
Have been trying that for a month now....something seems to have suddenly worked It only used 8% of the battery in 24 hours! I live in the rainforest with no service so cellular was turned off...wifi on, but I only accessed it about 6 times......still,nothing has changed. The same conditions would leave me with a dead battery in 7 hours previously.
Time will tell if it keeps up this well.
By the way....Thanks

So basically you're saying people should drain down the battery to 1% or so and not to 0% (device dies when battery is out) to get a better battery strength?

Seems to be the general consensus. I'm still not sure if that's what made the difference for me but previously,I would put my device to standbye when I went to sleep at 10:30pm and it would be dead by 6am

What is going on?

I turn my phone off last night with 50% battery left. This morning I turn the phone on and it tells me to charge the battery and then shuts off.
Here is where it gets weird; the exact same thing happened to my wife's phone except she had almost a full charge before turning it off.
What is going on?

I don't know I have gone 26 hours in mostly standby and I still have about 65-70 % of battery left. Check all your settings. I only have sync and back light to Auto turned on.
This is not normal and has never happened to me. Have you installed any apps from the market?

Little more info, please. Are your phones pre-OTA or have they been updated? Are they rooted? Did you just buy the phones? Have you trained the battery (fully charged then fully drained)? Have you done a factory reset?

Both phones are post update. Both were turned off by holding the power button then selecting "power off". Both have exactly the same apps that we had on our previous Androids (Vibrant and N1). Both bone stock. Have not factory reset, really don't want to go through the work of setup again.

I have never powered mine down completely overnight so I guess mine is not the same comparison. I might try it though just to see.

Ya they hold a great charge all day when on nut lost all their charge when powered off.

Is fastboot checked in settings or not?

esincho said:
Is fastboot checked in settings or not?
Click to expand...
Click to collapse
Yes it is checked

Try unchecking it

esincho said:
Try unchecking it
Click to expand...
Click to collapse
Is this a feature known to eat up battery? I mean if I left the phone on all night it would have still had a charge.

SugarMouth said:
Is this a feature known to eat up battery? I mean if I left the phone on all night it would have still had a charge.
Click to expand...
Click to collapse
Idk, shooting in the dark here, never heard of a problem like what you have. Wouldn't hurt to try. I know the fastboot has something to do with the way the phone shuts down.

That battery behavior is just strange unless you have apps syncing frequently.
I unplugged last night at 1am, went to bed, and got up this morning at 8am, it went from down fully charged to 93%. I have autobrightness on, wifi on, gmail and exchange syncing, every other app that syncs I have it to sync at least every 6 hrs or once a day.
I've had this phone for 3 days now, and I'm consistently able to get 12-14 hrs of battery time, and that includes heavy internet use, radio, tv, etc.
Are you in an area where it's constantly trying to pull a signal? Maybe that's what's eating the battery?
Are you doing the steps to condition the battery? Charge until fully charged, turn it off and keep it charged another hour, then take it off charge and use it until it completely dies on its own, charge it back up again and then use as normal?

Yeah, but he saying he powered the phone down, not left it on and just idle. Now that's strange

nmw407 said:
That battery behavior is just strange unless you have apps syncing frequently.
I unplugged last night at 1am, went to bed, and got up this morning at 8am, it went from down fully charged to 93%. I have autobrightness on, wifi on, gmail and exchange syncing, every other app that syncs I have it to sync at least every 6 hrs or once a day.
I've had this phone for 3 days now, and I'm consistently able to get 12-14 hrs of battery time, and that includes heavy internet use, radio, tv, etc.
Are you in an area where it's constantly trying to pull a signal? Maybe that's what's eating the battery?
Are you doing the steps to condition the battery? Charge until fully charged, turn it off and keep it charged another hour, then take it off charge and use it until it completely dies on its own, charge it back up again and then use as normal?
Click to expand...
Click to collapse
Yes but he is powering completely down not just in standby mode so nothing would be syncing. I will try this tonight and see if I have the same thing.

My wife had about 75% charge, I had about 50% charge. We both held the power button until the menu came up, we hit "power off". Both of our phones had dead batteries this morning.

I would download spare parts and see what apps are using ur battery
Sent from my HTC Glacier using Tapatalk

itmustbejj said:
I would download spare parts and see what apps are using ur battery
Sent from my HTC Glacier using Tapatalk
Click to expand...
Click to collapse
None of this would matter cause the phones are powered off.

If you have fastboot checked, the phone is not actually turning off. It goes into a quasi-sleep state and some low level processes may be running. That said, your problem may be related to the following thread:
forum.xda-developers.com/showthread.php?t=839935
the fix: enable USB debugging mode.
Another possibility, and this is someting that's happened to me in the past: the phones may be plugged into an outlet that loses power when you turn off the lights at night

Fast boot is similar to a Windows computer going into hibernation or standby mode.

Mine has been acting weird since Friday. I woke up and it totally discharged overnight... it was 100% charged when I went to bed. Yesterday it was laggy constantly and the battery has been draining at least twice as fast. Today phone locks up constantly.. apps are force closing.
... have rebooted, pulled the battery, etc... phone has gone from a dream to a nightmare in that respect.
Gonna double check my debug settings and see what happens.
EDIT: debug was turned off. I turned it on... will report back if there is a change.
UPDATE: Turning on USB debugging and a reboot seems to have fixed it. Battery drain `back to normal.

[Q] EPIC 8 hour max battery life -- is this normal?

I am LUCKY to get 8 hours of battery life on my brand new stock Epic.. I usually get 4-6 hours. It will NOT last through a normal day of work without putting it on the charger around lunchtime. I take it off the charger around 6:30 AM and I am usually home by 4PM and have to immediately go and charge my phone.
Even if I put it on airplane mode, kill all running applications, and shut the screen off to standby, the phone still seems to suck battery life down very quickly (~5% in 20 minutes on airplane mode, wtf???).. So airplane mode doesn't help.. And I really DON'T want to put it in airplane mode to conserve battery because then my phone is completely useless -- it won't even ring when my wife calls..
Is my battery defective? Please tell me it is... This can't be right..
Are there processes still running that use lots of CPU, even when the stock sprint "task manager" program shows that nothing is running? Is there anything I can do to improve this if I root the phone? How about custom roms? I would really like to run Froyo/Gingerbread anyway.. If anyone has any suggestions to help to make my battery life not such an EPIC FAIL, I would greatly appreciate it.
EDIT: Also wanted to comment on the SLOW CHARGING. With the stock Samsung wall charger, it takes at least a couple of hours to get a full charge. With a USB cable plugged into a PC overnight, it only gets to about 50%. Compared with my previous phone, the HTC TP2, this is really really REALLY slow. It charged in 30-60 minutes and the battery lasted much longer.
I did notice that Samsung only provides a 0.7 amp charger, versus a 1.0A charger for the TP2. Why does Samsung limit the charge current like this? And apparently there is no nueBattery mod driver for android
UPDATE: JuiceDefender looks very promising. Installed the free version and my battery is only down to 95% after one hour. Thanks for the suggestion.

FWIW, I'm getting about the same 8ish hours on mine running DK28. I'm losing about 4% an hour without touching it. I'm seeing some people claiming insane battery life (18 hours with heavy browsing on wifi) I wish I knew how they were managing that.

Wait, it won't even ring when you're wife calls? and you're complaining?

First, the airplane mode means you switch the phone to airplane mode first then switch it back so you won't have time without signal problem which can cause battery drain.
I am able to get 10+ hrs at least by doing the following
1) use airplane mode trick so no TWS
2) use titanium backup to remove a bunch of stock junk
3) use titanium to freeze certain applications (DRM, MediaHub, Qik etc)
4) Have as few applications as possible that constantly pull data

Just yesterday I had 1 day 17 hours before switching
Yesterday when it finally gave up the ghost with the battery indicator blinking i checked my stats.
I had 1 day, 17 hours unplugged. Screen time was around 2 hours and some minutes. I had 45 minutes of talk time.
One thing i will add is I purchased a charger with two batteries off Ebay. Previously when charging with the stock charger as soon as I pulled it off the charger it would read 97%. With the seperate charger it reads 100% for quite awhile before it starts to drop.
And for the record I purchased this charger and two batteries of Ebay for a winning bid of $0.01, plus $9.95 S&H. It was a steal in my opinion.

Unless you are getting near 12 hours of battery life, one of 3 things is occurring:
1) You are using the phone an insane amount
2) You messed something up
3) The battery is defective
For the record, its almost always number 2.
I suggest doing a Factory reset, which will wipe everything off the phone. Then without installing anything or setting your facebook to update every 15 seconds, see how long the battery life lasts. If it is still only 4-6 hours, then your battery is most likely defective.

well of course it won't ring if your wife calls if its in airplane mode. That radio is turned off.

8 hours? That's it? I wouldn't call that normal, but that's just me...
I just plugged my phone in after 4 1/2 days (108 hours) running on a stock 1500maH battery, running Quantum Rom 1.5 (DK17), no special apps running to disable data (aka Juice Defender, etc.), not in airplane mode at all, with the DRM software running, in other words, a more or less 'Stock' configuration (taking into account any differences in the base Rom).
Granted, I barely used the phone in the last 4 days though

muyoso said:
I suggest doing a Factory reset, which will wipe everything off the phone. Then without installing anything or setting your facebook to update every 15 seconds, see how long the battery life lasts. If it is still only 4-6 hours, then your battery is most likely defective.
Click to expand...
Click to collapse
I'll do that. For the record, I've got fbook set to never update, and seesmic once every 6 hrs.

Koadic said:
8 hours? That's it? I wouldn't call that normal, but that's just me...
I just plugged my phone in after 4 1/2 days (108 hours) running on a stock 1500maH battery, running Quantum Rom 1.5 (DK17), no special apps running to disable data (aka Juice Defender, etc.), not in airplane mode at all, with the DRM software running, in other words, a more or less 'Stock' configuration (taking into account any differences in the base Rom).
Granted, I barely used the phone in the last 4 days though
Click to expand...
Click to collapse
LOL at screen on for 52 minutes total. That is 11.5 minutes a day.

muyoso said:
LOL at screen on for 52 minutes total. That is 11.5 minutes a day.
Click to expand...
Click to collapse
Like I said, barely touched my phone in the last 4 days... been feeling a little under the weather so have been at home a lot and in bed doing all my internet stuff and gaming (pogo) on a laptop instead of on my phone.

Since I updated to the leaked Froyo, my battery life has plummeted. It lasts maybe 1/3-1/2 as long as it used to. Turning off 3G has helped immensely though, so that must be the culprit. I used to be able to leave 3G on while at work and make it to bedtime before having to charge it. Or if I shut it off at night (which I usually do), it would make it through my commute to work the next morning. Now, I'm lucky to get through the work day unless I turn off 3G. Huge difference in battery life for me since updating. I'm hoping they fix this in the official release of Froyo.

Well, I've recently found out that if you flash via update.zip while the USB is plugged in, you'll mess up the battery calibration of your device. This is what I did, and i'm pretty sure the cause of my problems. I did find a fix, and here it is:
siliconaddict said:
This is the procedure that works for me:
The following steps should significantly extend the battery life on your phone:
1. Let the battery drain close to empty (5% or less).
2. Connect the phone to the charger (AC or USB, USB is better) while powered on and allow the phone to charge until the notification LED is green, indicating the device is fully charged and untill the voltage is at least 4187mV. A higher voltage like 4192mV or more is even better. Use a tool like Overcharged or Battery Indicator to monitor this. Note that a green notification LED does not automatically mean that the voltage is good too.
A higher voltage means in practice that it will take longer to discharge, a lower voltage means that the battery will discharge a lot quicker! The difference can be quite significant!
3. Disconnect the phone from the charger and power it off.
4. Reconnect the phone to the charger while powered off and allow the phone to charge until the notification LED is green. The notification LED may turn green immediately. Leave it on the charger for another hour.
5. Disconnect the phone from the charger and power it on.
6. Once the phone is powered on completely (has restarted fully) wait 2 minutes and power it off again.
7. Reconnect the phone to the charger while powered off and allow the phone to charge until the notification LED is green. The notification LED may turn green immediately. Leave it on the charger for another hour.
8. Leave the phone on the charger and reboot into the ClockWorkMod recovery menu and wipe the battery stats via -> Advanced -> Wipe battery stats.
9. Disconnect the phone from the charger, restart the phone and start using it as normal.
From then on always let the battery drain close to empty (5% or less) as often as possible and then charge untill the voltage is at least 4187mV. A higher voltage like 4192mV or more is even better.
Normally you will have to do this only once. However, on all Android ROMs, if you flash a ROM while charging or during the first boot screen on, first boot mucks up the levels Android thinks the phone is at, i.e. Android will think you’re at 100% when maybe you’re only 90% or whatever. So in theory you will need to repeat this every time you flash a ROM while charging!
Better is to make sure the battery is charged before you flash a ROM and just remove the USB/charge cable before you flash a ROM. Put it back in (if you must) after the first boot screen (when the custom screen or whatever shows).
Click to expand...
Click to collapse
There is a shorter version that also seems to work well:
vidler said:
So combining the two bits of info we've compiled, the best way to calibrate your battery is as follows
1: Charge phone whilst on till LED is green.
2: Disconnect phone from charger, power it off.
3: Reconnect to charger with phone powered off and allow to charge till LED is green.
4: Disconnect the phone from charger, power it on. Once completely powered on, turn it off again and reconnect to charger until LED is green.
5: Reboot into recovery (back button held at same time as power button) and wipe battery stats.
Battery should now be calibrated.
Click to expand...
Click to collapse
From what I've been told, you don't have to wipe the stats (you need root to do that) but it helps if you can.
I think this may also stem from interrupting the inital charge of the device. I know I did this on both my wife's device and mine (plus my added fubar of flashing with the USB in). Anyway, hopefully I can report some good news tomorrow.
If y'all are really interested in reading a 51 page thread on this, go here: http://forum.xda-developers.com/showthread.php?t=755903

I get 4 or 5 hours if that. I can barely make it to 6. But i probably use my phone more than the average person. Because i take public transportation and browse, stream, email and have 4g connected on my commute back and fourth.

diego1985 said:
I get 4 or 5 hours if that. I can barely make it to 6. But i probably use my phone more than the average person. Because i take public transportation and browse, stream, email and have 4g connected on my commute back and fourth.
Click to expand...
Click to collapse
I've been running JuiceDefender for about 5 hours now and I am loving it.. I still have 75% and I can still receive calls just fine.. It turns off data when the screen is off, but turns it on at scheduled times (default is 1 min every 15 min) so that your emails/twitters/etc can update like normal. The paid version has even more features so I bought it..

Never mind im dumb for not reading his post. Already answered my question sorry.

sleebus.jones said:
Well, I've recently found out that if you flash via update.zip while the USB is plugged in, you'll mess up the battery calibration of your device. This is what I did, and i'm pretty sure the cause of my problems. I did find a fix, and here it is:
There is a shorter version that also seems to work well:
From what I've been told, you don't have to wipe the stats (you need root to do that) but it helps if you can.
I think this may also stem from interrupting the inital charge of the device. I know I did this on both my wife's device and mine (plus my added fubar of flashing with the USB in). Anyway, hopefully I can report some good news tomorrow.
If y'all are really interested in reading a 51 page thread on this, go here: http://forum.xda-developers.com/showthread.php?t=755903
Click to expand...
Click to collapse
Decided not to quote the whole thing but I'm in the process of doing this right now! Took 2 hours to drain my batt from full (running everything and keeping my phone searching for gps constantly in a place where it would also be searching for signal makes quick work of a battery!).

knyque said:
Wait, it won't even ring when you're wife calls? and you're complaining?
Click to expand...
Click to collapse
*golf clap*

diego1985 said:
I definitely need to try that out. Can you still receive calls or no?
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
Yes, with juice defender I can receive calls and my gmail/twitter/facebook/etc. are all already up-to-date whenever I pick up my phone. It works exactly as before, except my battery is not constantly being drained now.
I guess the downsides are that I might not get a new email notification for 15 minutes, and that there is a service running in the background that may cause some slowdown. Neither has been a problem for me so far. I highly recommend this application for Epic 4G owners. Problem solved, basically.

I usually get 12hrs with moderate use (~2hrs with screen on, half of that is usually on the browser). I turn background data off bc I don't have a twitter and I rarely check Facebook so when I do I just use the browser.
I also noticed that wifi burns more battery on DK28, on 2.1 I would hardly lose any battery on standby with wifi, now I get a 3-4% drain per hour... But with 3g on now I lose less then 1% an hour, it used to be a battery hog.

[Q] Battery issues

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??
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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........
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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?

is this the battery or the phones issuse?

Hi everyone im new to the forums and recently got my note 3 last week on Thursday. I have the Tmobile version.
When I charge the phone when the device is completely turned off and it fully charges and the red LED turns green, I turn on my phone and my battery percentage shows 99%, but if I charge while the phone is on then itll charge too 100%.
Another issue that I am having is that my battery dies qquicky. I don't know if this has something to do when I first got the phone because I didnt charge it once I had got the phone and once I did get the phone I factory reseted it so that I could go through the initial setup (you know the menus that tell you to put your language, wifi, gmail etc.)
I have everything turned off I have my brightness always set to 0 I don't use auto brightness. I only increase the brightness when im outside in the sun. I have auto syncing completley turned off I only have notifications from apps such as Facebook, instagram and other apps.
I Don't have anything running in the background nor do I have any wakelocks happening.
My battery life right now is at 85% I was using the chrome browser since this morning starting at 7:10am its now 8:48am. Im a heavy user I guess because I use the web Brower a lot. On the second day that I had the device I was using the web constantly it total time was 8 or 8 and a half hours with 5 and a halfs of screen on time.
I really don't wanna go and exchange the device because this is the only issue that im having and I already have everything that I want setup and am accustomed to this phone but if its the devices problem and not the battery than I have no choice but to exchange.
Im hoping that you guys on xda will be able to help me out thanks in advance

I forgot to inform you guys that I also have gps and location services completely turned off aswell

15% for 1.5 hr of continuous surfing...thats not bad...so wats the issue? u wan the batt to last a week of continuous use?
Teleported from my SM-N9005 from The Enterprise

dcracks said:
15% for 1.5 hr of continuous surfing...thats not bad...so wats the issue? u wan the batt to last a week of continuous use?
Teleported from my SM-N9005 from The Enterprise
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Click to collapse
Im not trying to make it last that long lol but shouldn't it last a little bit longer compared to what others are getting and how quickly it decreased this morning? I mainly juss wanna know if this is normal or if its an issue that I need to fix

xavierbaxter95 said:
Hi everyone im new to the forums and recently got my note 3 last week on Thursday. I have the Tmobile version.
When I charge the phone when the device is completely turned off and it fully charges and the red LED turns green, I turn on my phone and my battery percentage shows 99%, but if I charge while the phone is on then itll charge too 100%.
Another issue that I am having is that my battery dies qquicky. I don't know if this has something to do when I first got the phone because I didnt charge it once I had got the phone and once I did get the phone I factory reseted it so that I could go through the initial setup (you know the menus that tell you to put your language, wifi, gmail etc.)
I have everything turned off I have my brightness always set to 0 I don't use auto brightness. I only increase the brightness when im outside in the sun. I have auto syncing completley turned off I only have notifications from apps such as Facebook, instagram and other apps.
I Don't have anything running in the background nor do I have any wakelocks happening.
My battery life right now is at 85% I was using the chrome browser since this morning starting at 7:10am its now 8:48am. Im a heavy user I guess because I use the web Brower a lot. On the second day that I had the device I was using the web constantly it total time was 8 or 8 and a half hours with 5 and a halfs of screen on time.
I really don't wanna go and exchange the device because this is the only issue that im having and I already have everything that I want setup and am accustomed to this phone but if its the devices problem and not the battery than I have no choice but to exchange.
Im hoping that you guys on xda will be able to help me out thanks in advance
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Click to collapse
hmm from my opinion of it is when u charge a phone which is completely off. after you fully charge your phone and unplug the charger it takes more energy to power on the phone.Therefore it is recommended to charge by not switching off the phone or running any apps or games while charging it and let it charge.

MxFadzil92 said:
hmm from my opinion of it is when u charge a phone which is completely off. after you fully charge your phone and unplug the charger it takes more energy to power on the charger.
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Click to collapse
But is it normal and does it happen to your guys device?

xavierbaxter95 said:
But is it normal and does it happen to your guys device?
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Click to collapse
normal in what? off-ing your phone while charging and when you turn back it on from 100% to 99 %?

MxFadzil92 said:
normal in what? off-ing your phone while charging and when you turn back it on from 100% to 99 %?
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Click to collapse
Yea is it? When my phone is completley turn off and its fully charged and when I unplug it and turn it on it shows 99% instead of 100%.

xavierbaxter95 said:
Yea is it? When my phone is completley turn off and its fully charged and when I unplug it and turn it on it shows 99% instead of 100%.
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Click to collapse
it is normal. like i said never ever turn off your phone while charging it as it consume much more energy or power to turn it back on. and for a newer phone always let it die completely to 0% and let it charge fully until 100% without turn off the phone. it takes awhile before the battery being callibrated

It is normal. The GN3 drop from 100% to 99% very fast compared to the GN2.

MxFadzil92 said:
it is normal. like i said never ever turn off your phone while charging it as it consume much more energy or power to turn it back on. and for a newer phone always let it die completely to 0% and let it charge fully until 100% without turn off the phone. it takes awhile before the battery being callibrated
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Click to collapse
I let the battery die down to 1% lastnight and then turned it off b4 it turned itself off. But I read that it was bad to let the battery die down to 0 though.

xavierbaxter95 said:
I let the battery die down to 1% lastnight and then turned it off b4 it turned itself off. But I read that it was bad to let the battery die down to 0 though.
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Click to collapse
its normal. its a battery protection method i first saw in S3 if i remember correctly.
the usage you mentioned earlier seems reasonable to me. you will need to use the phone longer to get an idea of how much battery certain apps will take.
BTW, you can use reading mode to reduce the battery drain even further.
to do that, click on the more settings icon in notification drawer, long press the reading mode icon, turn it on, press the pencil icon then select the app or apps that you use most with screen on. you will notice that the screen gets a red tint when u use this mode, but for me it does save a bit more battery than normal mode.
i use it with whatsapp, music and chrome.
hope that helps!

I let my phone fully die to where it turn itself off and pluged it in the charger and turn it back on once it fully charge I unpluged it and started using it its at 95%, and has been on for 37 mins with 32 min on screen time I updated 3 apps went on facebook and instagram for a quick bit. I dont think thats normal

xavierbaxter95 said:
I let my phone fully die to where it turn itself off and pluged it in the charger and turn it back on once it fully charge I unpluged it and started using it its at 95%, and has been on for 37 mins with 32 min on screen time I updated 3 apps went on facebook and instagram for a quick bit. I dont think thats normal
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Click to collapse
Looks normal to me. My N3 decreases quickly from 100% to 90% then decreases slowly.
I'am not an heavy user : a few calls, a few sms/mms, facebook, twitter, web thru apps like magazine or flipboard, calendar and task usage, mp3 (around 20 min), no gps or location (only if needed), phone mode at night in order to use alarm on morning ...
My N3 lasts 3 days (last time was 3 days et 8 hours !) where my N2 was down after 2 days or less usage.