Database Users

What is your display power drain?

Maybe my battery is not trained yet, but so far, on my 2-days old n1, battey lasts for 4 hours (mid. backlight, no wifi, very little use).
Still running stock rom and not planning on rooting.
What I noticed is that in my battery drain stats show Display contributing to 80% of total drain. That's with display being on mid setting... is that normal? What is yours (esepecially for people with stock roms)?

Are you playing with the phone a lot? Like is your display always on? 4hrs still seems extream to me, I am rooted and runninng a custom rom, but even when I wasnt I never managed to get through the battery that quickly, and I use the phone a lot

Here's what I do to get good battery... I only keep backlight on like the a ****as hair..lol barely unless outside...... widgets are cool n all, but if there constantly updating thats polling your battery, live wallpapers are cool, but a battery drainer, I also keep gps, locations and bluetooth off unless using them, wifi also.. also the background applications setting uses battery but if ya want updating widgets no way around that...
Also look in seetings about phone, battery use and see what's eating your battery, I use my phone hours at a time so my display is most my battery drain which is normal, everything else is like 7 percent or less, mostly 2 or 3 percent. ....
I think thats all I do, but you may keep stuff on like widgets and that unfortunately eats battery..

I am running everything in my Sig. I have had my N1 for about 2 months now right around that. After a 14 to 16hr day with some heavy to mild usage I am still over 50%, but then again I have 3g turned off and i am only on Edge all the time since i am always around WiFi. So i would tell you 4 hours is a bit extreme but hang in there it does get better. I remember being around 25% for the 1st few weeks until it got better. Other wise do what Temperbad said that is the best way to go. Only widget i am running that updates every hour is my Weather one. Turn the screen all the way down unless it other wise needs to be up. I am sure that is what is killing your battery. Mine is always on the lowest setting until i am outside.

Sadly I'm rooted, but I will state my percentage too.
Weirdly, my display usage is only 15% on Paul's Desire ROM. Honestly I dont see how this may be - but that is what it says. My brightness is quite high too..

Yeah, I'm well aware about widgets and battery drain regarding 3G and all that, I've had PDAs for quite a while.
For comparison, my old and ****ty TP2 would drain about 30-40% of its battery with same usage that would drain my N1 dry.
I do remember that LiIons get better in a week or so of usage, but I wanted to hear what you guys are getting. Would love to hear from someone who's just bought an N1 like me.
It's under full warranty, so I'm not worried too much. Just an inconvenience.

DarkDvr said:
Yeah, I'm well aware about widgets and battery drain regarding 3G and all that, I've had PDAs for quite a while.
For comparison, my old and ****ty TP2 would drain about 30-40% of its battery with same usage that would drain my N1 dry.
I do remember that LiIons get better in a week or so of usage, but I wanted to hear what you guys are getting. Would love to hear from someone who's just bought an N1 like me.
It's under full warranty, so I'm not worried too much. Just an inconvenience.
Click to expand...
Click to collapse
I have my display set to "Auto Brightness," have a display timeout of 1 minute, have my email get synced every hour, and also use a live wallpaper.
My display accounts for 63% of battery usage.

Auto brightness will use more battery than keeping it low. Cause its constantly checking light density through the sensor to give it the correct lighting...

temperbad said:
Auto brightness will use more battery than keeping it low. Cause its constantly checking light density through the sensor to give it the correct lighting...
Click to expand...
Click to collapse
I agree, but disabling that, disabling GPS, WiFi, turning off 3G, killing all widgets.. ok yeah my phone will last me 2 hours longer, but it's also boring as hell.
Might as well go pick up a simple nokia for $10 - battery will last for weeks, but what's the point..
Not saying your advise is bad, it's a good idea.. just that all these advices to turn everything off - what's the point of even having a PDA then..

PacoL250 said:
I have my display set to "Auto Brightness," have a display timeout of 1 minute, have my email get synced every hour, and also use a live wallpaper.
My display accounts for 63% of battery usage.
Click to expand...
Click to collapse
Thanks, this info I can use.

temperbad said:
Auto brightness will use more battery than keeping it low. Cause its constantly checking light density through the sensor to give it the correct lighting...
Click to expand...
Click to collapse
I've read otherwise, though I don't think that Auto Brightness is the optimal battery saving setting.
Obviously it's a middle ground between max and low.

Here's a report of my usage today:
~Wifi and 3G both turned on the whole time
~30 mins of MP3s with head phones
~20 mins of 3G tethering over Bluetooth
~40 mins of apps usage (mostly the Browser and the Gallery)
~8 mins of talk time
one 1 min update through the bootloader
have gmail sync turned on, also twidroid syncs every 15 mins
The Battery use app shows:
54% Display (active 6% of the time)
16% Cell standby
14% Phone idle
4% Wifi (active 51.6% of the time)
4% Android System
Right now 14h26' since unplugged, still having 43% of the battery left. The battery meter says 12 more hours until 0%.
All things considered, the battery life is quite good on my N1.
Edit: forgot to mention, the display is set to the middle setting with the Power widget, no auto brightness

pikipirs said:
Here's a report of my usage today:
~Wifi and 3G both turned on the whole time
~30 mins of MP3s with head phones
~20 mins of 3G tethering over Bluetooth
~40 mins of apps usage (mostly the Browser and the Gallery)
~8 mins of talk time
one 1 min update through the bootloader
have gmail sync turned on, also twidroid syncs every 15 mins
The Battery use app shows:
54% Display (active 6% of the time)
16% Cell standby
14% Phone idle
4% Wifi (active 51.6% of the time)
4% Android System
Right now 14h26' since unplugged, still having 43% of the battery left. The battery meter says 12 more hours until 0%.
All things considered, the battery life is quite good on my N1.
Edit: forgot to mention, the display is set to the middle setting with the Power widget, no auto brightness
Click to expand...
Click to collapse
Wow... that's some serious battery life.
Ok, some questions..
1. screen brightness setting?
2. how long have u had that phone (battery) for? Did it improve over time?
3. Is it rooted/flashed or stock rom?
4. you got any syncing widgets running (RSS/twidroid)? Live wallpaper?
Thanks a bunch for your input!

45% - Display
22% - Cell Standby
17% - Voice Calls
5% - Idle
3% - Android System
2% - Wi-fi
Just one comment. I keep Wi-fi and GPS on all day because Wi-fi sleeps when the screen is off and only polls when the screen is on if you're not using it. GPS is only used when your location is required in an application. i dont know why people are always like "you have to turn these off to get good battery life" (Notice wi-fi is 2%)
also i've been running 8 hours with moderate to heavy use (internet, music, phone calls etc) and I'm @ 40%. The drain from 70% - 40% seems to go so slow compared to 100% - 70%.

45% - Display
22% - Cell Standby
17% - Voice Calls
5% - Idle
3% - Android System
2% - Wi-fi
Just one comment. I keep Wi-fi and GPS on all day because Wi-fi sleeps when the screen is off and only polls when the screen is on if you're not using it. GPS is only used when your location is required in an application. i dont know why people are always like "you have to turn these off to get good battery life" (Notice wi-fi is 2%)
also i've been running 13 hours with moderate to heavy use (internet, music, phone calls etc) and I'm @ 40%. The drain from 70% - 40% seems to go so slow compared to 100% - 70%.

ghostrida said:
45% - Display
22% - Cell Standby
17% - Voice Calls
5% - Idle
3% - Android System
2% - Wi-fi
Just one comment. I keep Wi-fi and GPS on all day because Wi-fi sleeps when the screen is off and only polls when the screen is on if you're not using it. GPS is only used when your location is required in an application. i dont know why people are always like "you have to turn these off to get good battery life" (Notice wi-fi is 2%)
also i've been running 8 hours with moderate to heavy use (internet, music, phone calls etc) and I'm @ 40%. The drain from 70% - 40% seems to go so slow compared to 100% - 70%.
Click to expand...
Click to collapse
Sweet, thanks for the info. It seems my battery is also slowly "training" its way closer to these numbers.

DarkDvr said:
I agree, but disabling that, disabling GPS, WiFi, turning off 3G, killing all widgets.. ok yeah my phone will last me 2 hours longer, but it's also boring as hell.
Might as well go pick up a simple nokia for $10 - battery will last for weeks, but what's the point..
Not saying your advise is bad, it's a good idea.. just that all these advices to turn everything off - what's the point of even having a PDA then..
Click to expand...
Click to collapse
Your right... about the updating widgets and wallpaper, they do make the phone funner.. but why need gps on when not using, or bluetooth, or wifi? Just simply turn them on when using...
So much going on with this phone I can say its good pretty decent battery....
Anyone know how to make my gmail sync every hour instead of instantly?

When I got my Nexus my battery was just as poor, but after using it for a couple of weeks I'm getting about 10 hours usage with medium brightness, WiFi, and gps.
So just give it some time and it should fix it itself.

pikipirs said:
Here's a report of my usage today:
~Wifi and 3G both turned on the whole time
~30 mins of MP3s with head phones
~20 mins of 3G tethering over Bluetooth
~40 mins of apps usage (mostly the Browser and the Gallery)
~8 mins of talk time
one 1 min update through the bootloader
have gmail sync turned on, also twidroid syncs every 15 mins
The Battery use app shows:
54% Display (active 6% of the time)
16% Cell standby
14% Phone idle
4% Wifi (active 51.6% of the time)
4% Android System
Right now 14h26' since unplugged, still having 43% of the battery left. The battery meter says 12 more hours until 0%.
All things considered, the battery life is quite good on my N1.
Edit: forgot to mention, the display is set to the middle setting with the Power widget, no auto brightness
Click to expand...
Click to collapse
What battery meter do you use to tell the amount of hours left?

DarkDvr said:
Maybe my battery is not trained yet, but so far, on my 2-days old n1, battey lasts for 4 hours (mid. backlight, no wifi, very little use).
Still running stock rom and not planning on rooting.
What I noticed is that in my battery drain stats show Display contributing to 80% of total drain. That's with display being on mid setting... is that normal? What is yours (esepecially for people with stock roms)?
Click to expand...
Click to collapse
Your phone or battery is defective. Call HTC for a replacement.

Post your average battery drain on standby

I'm wondering if my battery drain on standby is normal so I want to know yours. I see some people with 4-5 mA drain and that makes me think whether my drain is on the excessive side.
batery drain: 11-12 mA. sometimes jumps to 130-200 mA, i wonder why?
What's on: background sync, 3g.
what's off: gps, wifi, auto-sync.
auto updating apps: yahoo mail
Please follow that format if possible. Thanks.

Your battery consumption is good, you will have around 5ma too by turning off 3g data. The 130 ma thing is due to automatic update somewhere. (mails, rss, facebook etc)

Sichroteph said:
Your battery consumption is good, you will have around 5ma too by turning off 3g data. The 130 ma thing is due to automatic update somewhere. (mails, rss, facebook etc)
Click to expand...
Click to collapse
the only app that updates automatically is yahoo mail, i'm sure of that. so the jumps is a mistery to me. sometimes the jump is above 200 mA.

standby battery drain: 5-7 mA.
What's on: background sync, 3g, auto-sync, gps on but no apps using it, tasker, systempanel.
what's off: wifi, bluetooth.
auto updating apps: yahoo mail
if switch to 2g, standby battery drain can goes down to 3mA

dan138zig said:
I'm wondering if my battery drain on standby is normal so I want to know yours. I see some people with 4-5 mA drain and that makes me think whether my drain is on the excessive side.
batery drain: 11-12 mA. sometimes jumps to 130-200 mA, i wonder why?
What's on: background sync, 3g.
what's off: gps, wifi, auto-sync.
auto updating apps: yahoo mail
Please follow that format if possible. Thanks.
Click to expand...
Click to collapse
-mine is playing at 10-13 mA on stanby. Now it is at 133-153mA while making this post.
Whats on: background sync, 2g
Whats off: gps, wifi, auto sync
Auto update app: yahoomail, yahoo messenger, gochat.
I have jumps sometimes but not as high as that.
Sent from my HTC HD2 using XDA App

I know this is noob-ish, although I consider myself somewhat seasoned, but what app (or other method) are you using to measure battery drain? I'm running shubcraft 2.0 over ChuckyROM and in standby all day won't last more than 11-12 hours. Ouch.
Thanks in advance.

cocopete5243 said:
I know this is noob-ish, although I consider myself somewhat seasoned, but what app (or other method) are you using to measure battery drain. I'm running shubcraft 2.0 over ChuckyROM and in standby all day won't last more than 11-12 hours. Ouch.
Thanks in advance.
Click to expand...
Click to collapse
CurrentWidget, free in the market.

Thanks so much!

My drain is mostly about 5mA. Sometime it is between 5-9mA.
I have nothing that sync automatically, but I have those jumps too. Mostly they're between 150-200mA. How often do they appear in your phones?
So, know whats on:
Data, GPS on but no apps using it, Systempanel, Facebook, Whatsapp
What's off:
WiFi (but the same standby if I'm using WiFi instead of 3G), bluetooth
In airplane mode it's only 2mA, sometimes 3

My drain averages about 5-7mA with the combo in my sig
3G on all the time (not a single data drop on over 3 days as well, best rom I've used), auto sync on for facebook and google contacts etc every 20 mins.

apeatan said:
-mine is playing at 10-13 mA on stanby. Now it is at 133-153mA while making this post.
Whats on: background sync, 2g
Whats off: gps, wifi, auto sync
Auto update app: yahoomail, yahoo messenger, gochat.
I have jumps sometimes but not as high as that.
Sent from my HTC HD2 using XDA App
Click to expand...
Click to collapse
wow what else do you do? my phone jumps form around 134- 334 something with almost everything off

Mine is usually in 65-70ma range. There really is something wrong with it.
Are there any places to check for battery drain? I tried a blank data.img, which did not help. (I'm on HyperDroid 1.7).

4-8 ma in standby. i guess this is a good value!
wm rom: goatrip android 1.0
android build: mdj froyo revolution 2.3 with S7 test 3 kernel
radio rom: 2.12

my drain is between 2 and 5 mA in standby condition with background sync, 3g, data on. According with autoupdate scheme it's jumping to 135 mA
My configuration is as follow:
WinMo rom: VBNDroid-Reloaded2Alt-24634-Oct13
Radio: Radio_2_15_50_14
Android Kernel: hastarin 8.5
Android rom: [Everyday Builds][latest linux_on_wince_htc][PPP] CM6.1+
SetCpu: 245-1190MHz, Interactive governor plus screen off profile 245/245MHz powersave
My cpu is also undervolted: Hastarin CONFIG_HTCLEO_UNDERVOLT_800
My quadrant score is around 2000
No problem at the moment with this configuration. I have been running this for 2 days

mbrown3460 said:
wow what else do you do? my phone jumps form around 134- 334 something with almost everything off
Click to expand...
Click to collapse
- am, nothing. Just those and some of the usual apps current widget list as running in the background. I just use set cpu that's it.
Sent from my HTC HD2 using XDA App

Build - MCCM 3.3
Kernel - Hastarin 8.5
Radio - 2.10.50.26
WM - Cleanex OzRom
Between 4 and 5 mA in standby which equates to a loss of around 1% an hour. And with what I would call normal phone use I usually have around 30% charge left after a 16-17 hour day, sometimes a bit more, sometimes a bit less. I have stayed with an older radio because I have never had any issues so have seen little point in updating it.
I am more than happy with my battery life.

Pagnell said:
Build - MCCM 3.3
Kernel - Hastarin 8.5
Radio - 2.10.50.26
WM - Cleanex OzRom
Between 4 and 5 mA in standby which equates to a loss of around 1% an hour. And with what I would call normal phone use I usually have around 30% charge left after a 16-17 hour day, sometimes a bit more, sometimes a bit less. I have stayed with an older radio because I have never had any issues so have seen little point in updating it.
I am more than happy with my battery life.
Click to expand...
Click to collapse
It's good that you didn't change. I think 2.10 is very stable. I'm using 2.14 and I think the standby was better with the older ones. But how much do you use your phone during the day? Mine is at 40% after 12 hours of moderate use. I think this should go better

JanssoN said:
It's good that you didn't change. I think 2.10 is very stable. I'm using 2.14 and I think the standby was better with the older ones. But how much do you use your phone during the day? Mine is at 40% after 12 hours of moderate use. I think this should go better
Click to expand...
Click to collapse
What I would call a normal usage. On average around 5 phone calls totalling around 20-25 minutes, some wi-fi and data usage totalling around 30 minutes, some game playing and a lot of display usage as I read books using FBReader while commuting.
This is all guess work though if I'm honest, I have never measured exactly what I do with my phone each day because as long as I get through the day without it giving me low battery errors I'm happy. I would say I have been on 40% after 12 hours use quite a few times, that doesn't seem unusual to me.

My average battery drain is 3ma to 5ma
With wi-fi on 7ma

I'm seeing spikes upto 400 ma.
I assume this is because I am running the stock WM ROM?
I'm new to hd2 (from HTC legend).
Will using a custom WM ROM like chuckydroid get my battery running sweet ?
Gotta say hd2 is a dream !

[Q] Battery Drain - wifi on vs. off

I have a question on the battery drain of this phone. Here's the situation:
I usually have 0 bars at home (total dead zone) and use wifi exclusively. At work, I have no wifi connection but full HSPA.
When I have wifi on at work, it seems like my battery drains SLOWER than if wifi is off. Case in point, every day I unplug the phone at 7am, fully charged. If wifi is on, at 3pm I get down to about 60%, but if wifi is off, at 3pm, I get down to around 30%. Usage is the same in both situation. A few youtube videos, a few IMs, a few text messages, reading a book for an hour at lunchtime, etc. That sort of thing.
I thought having wifi on all the time is a battery drain. So why is the battery drain much slower when wifi is on than when it is off? And spin off on that, will it do the same when bluetooth is on vs. off?

nmw407 said:
I have a question on the battery drain of this phone. Here's the situation:
I usually have 0 bars at home (total dead zone) and use wifi exclusively. At work, I have no wifi connection but full HSPA.
When I have wifi on at work, it seems like my battery drains SLOWER than if wifi is off. Case in point, every day I unplug the phone at 7am, fully charged. If wifi is on, at 3pm I get down to about 60%, but if wifi is off, at 3pm, I get down to around 30%. Usage is the same in both situation. A few youtube videos, a few IMs, a few text messages, reading a book for an hour at lunchtime, etc. That sort of thing.
I thought having wifi on all the time is a battery drain. So why is the battery drain much slower when wifi is on than when it is off? And spin off on that, will it do the same when bluetooth is on vs. off?
Click to expand...
Click to collapse
I have found [in my case only] that Wi-Fi does not drain my battery near as much as Bluetooth. I leave my Wi-Fi on all the time and my battery is usually fine for 36 hours. If I use BT, my battery drains at a much higher rate.

Do you use wi-fi calling at work as well? With the cellular radio completely off, and a strong wifi signal, the battery drain might be less than a weak cellular signal.
I've also noticed that having wifi on doesn't drain the battery nearly as much as anticipated.

I don't use wifi calling at work since I don't get any wifi signal whatsoever. At home wifi calling is on. It's the only way I can make a call.
At work I have full HSPA speeds but the battery drain is ridiculous when wifi is turned off. I'm just curious as to why having wifi on would cause the drainage to be slower... not that I'm complaining.... it just seems counter-intuitive from what is supposed to be the norm.

I have Wi-Fi on almost 100% of the time and never turn off my cell antenna. I have great signal at home and at work. But I have tested the signal on nearby hotspots/wireless networks with low signal and it doesn't affect my battery anymore than when at home.

CBConsultation said:
I have found [in my case only] that Wi-Fi does not drain my battery near as much as Bluetooth. I leave my Wi-Fi on all the time and my battery is usually fine for 36 hours. If I use BT, my battery drains at a much higher rate.
Click to expand...
Click to collapse
36 hours??
wth

he underclocks heavily plus custom rom. I usually get 12-15 hrs with the wifi on but only 7-8 with the wifi off.

nmw407 said:
he underclocks heavily plus custom rom. I usually get 12-15 hrs with the wifi on but only 7-8 with the wifi off.
Click to expand...
Click to collapse
Bingo! You got it.

[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??
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?

WiFi battery drainage

I've got a problem with WiFi consuming too much battery. I fully charged my phone and did not touch it while it was connected to WiFi. After 2.5 hours, it was at 88% saying most of it was consumed by WIFi and standby mode.
I have "WLAN optimization" turned on. I never had this kind of problem before with other phones - does anybody have an idea what I could do to reduce the battery usage?

D.Cent said:
I've got a problem with WiFi consuming too much battery. I fully charged my phone and did not touch it while it was connected to WiFi. After 2.5 hours, it was at 88% saying most of it was consumed by WIFi and standby mode.
I have "WLAN optimization" turned on. I never had this kind of problem before with other phones - does anybody have an idea what I could do to reduce the battery usage?
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maybe you have apps synchronizing and draining the battery, try greenify app to hibernate what you dont need when phone is on standby mode.