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12 hr idle = 50% battery drain!

Hi guys. The idle battery drain is ridiculous in my transformer. I charged it over night and left it home idle for 12 hours. And there's only 52% battery left. I checked the battery usage and it says 34% are from wifi, but I setted it to wifi off when screen is off. Beautiful Widgets consume 15%, tablet idle 11%, android os 10%, screen 10%. My tablet is almost a week old and I'm running prime v 1.7 with default settings. And is there any free Widgets that lets you toggle wifi,bt, auto sync, and etc....?
Sent from my Transformer TF101 using Tapatalk

I'm running the same rom and i don't have that kinda drain. May be some app running in the background? May be wipe and start with clean slate?
Beautifulwidgets come with all the toggle widgets you need.

Turn of background sync and put in airplane mode and see if this helps, i turn mine off when i am not using it for a extended time.

thebigham said:
Hi guys. The idle battery drain is ridiculous in my transformer. I charged it over night and left it home idle for 12 hours. And there's only 52% battery left. I checked the battery usage and it says 34% are from wifi, but I setted it to wifi off when screen is off. Beautiful Widgets consume 15%, tablet idle 11%, android os 10%, screen 10%. My tablet is almost a week old and I'm running prime v 1.7 with default settings. And is there any free Widgets that lets you toggle wifi,bt, auto sync, and etc....?
Sent from my Transformer TF101 using Tapatalk
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Obviously something is taking wakelock. That's the only way you can get drain like that. Start uninstalling apps and widgets until it goes away. I would start with Beautiful Widgets, because it's on the Consuming Power list. Widgetsoid is free, and has alot more function.

I had this same problem.
I had the same problem, and you can check the responses over at this thread if you like: http://forum.xda-developers.com/showthread.php?t=1222410
Basically, for me I had the tablet charged to 100% and it would drop to ~50% after 15 hours of being idle and not touching the thing once. I had WiFi set to turn off when the screen turns off, and all other settings adjusted to try and save battery life. Google Maps was the biggest user of battery while the tablet should have been sleeping.
For me, the problem turned out to be Latitude. Latitude was waking my tablet, turning on WiFI and updating the location while the tablet should have been sleeping. I had to sign out of Latitude completely. This fixed all the battery issues I was having. Now if I need to use Latitude, I will sign back it, update, then sign back out. Kind of annoying, but it is what it is.
Hope this helps...

Grab "Auto Airplane Mode" widget from the market - it turns off all wireless radios, WiFi and BT when they screen turns off

[Q] Battery drain with dock during sleep (Cromi-X 5.4)

This topic has been up a couple of times before, perhaps most interestingly discussed in this thread.
It appears the problem still exists (asusdec_wake kernel wake), and I'm experiencing extreme battery drain during sleep with the dock attached. Currently running Cromi-X 5.4, and I have tried hunds 3.4.4, and _that 8 and 9 kernels.
It appears to behave as following: The tablet enters deep sleep with low battery drain (0.3% per hr with wifi off), and after a while (have seen it happen after a range of 1 - 5 hours) it starts draining quickly as asusdec_wake wakes the tablet up. It only occurs when the tablet is docked, it can occur at both high charge levels and when the dock is empty (mine always drains to 0%). It does not seem to matter whether wifi is on or off. I monitor the battery with better battery stats.
It's a real pity, since I have to turn the tablet off whenever I want to keep the dock attached.
Is anyone else experiencing this drain? Any suggestions for fixes?
Also: obligatory first post thanks-for-making-my-tablet-great to @sbdags, @_that and all the other contributors to Cromi :good:

rkha said:
It appears to behave as following: The tablet enters deep sleep with low battery drain (0.3% per hr with wifi off), and after a while (have seen it happen after a range of 1 - 5 hours) it starts draining quickly as asusdec_wake wakes the tablet up.
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How do you know that it first enters deep sleep and that it's woken up later?
asusdec_wake is a wake lock which only keeps the tablet awake, so the question is what causes the wake up and keeps the wake lock?

_that said:
How do you know that it first enters deep sleep and that it's woken up later?
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It might be a strong assumption, but it's based on the battery drain patterns I've seen. I've tried to monitor this a bit the last few days. Usually the battery drain is as expected during sleep for a while (whenever I check during this period, the asusdec_wake has not been active and the entire period the tablet has been in deep sleep), before it increases and stays high. I attach some screen shots where this can be seen. The change in slope in the battery graph is after about 7 hours. In those screen shots the deep sleep time reported by bbs was 6h24m. I'm not sure the reason for suspend_backoff, but I assume something is forcing the tablet to stay out of deep sleep. If I disconnected the tablet, there are no issues with suspend_backoff (and naturally not with asusdec_wake either).
_that said:
asusdec_wake is a wake lock which only keeps the tablet awake, so the question is what causes the wake up and keeps the wake lock?
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Click to collapse
Good point. Any tips on how this can be diagnosed?

rkha said:
It might be a strong assumption, but it's based on the battery drain patterns I've seen. I've tried to monitor this a bit the last few days. Usually the battery drain is as expected during sleep for a while (whenever I check during this period, the asusdec_wake has not been active and the entire period the tablet has been in deep sleep), before it increases and stays high. I attach some screen shots where this can be seen. The change in slope in the battery graph is after about 7 hours. In those screen shots the deep sleep time reported by bbs was 6h24m. I'm not sure the reason for suspend_backoff, but I assume something is forcing the tablet to stay out of deep sleep. If I disconnected the tablet, there are no issues with suspend_backoff (and naturally not with asusdec_wake either).
Good point. Any tips on how this can be diagnosed?
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Click to collapse
Try turning location services off completely for me in settings.
Does that help? Give it a reboot as well.

sbdags said:
Try turning location services off completely for me in settings.
Does that help? Give it a reboot as well.
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Yes it did, thank you! 21 hours, only 3% down and asusdec_wake inactive. I will report back if things change.
Will add always turning this off when tablet screen is off to Tasker. Interesting that it caused this huge battery drain, given that gps and wifi was off anyways. Wakeups from com.google.android.gms decreased from many to nearly none when turning off location access, perhaps it is sufficient to turn of google apps location access in settings.
Thanks again!

rkha said:
Yes it did, thank you! 21 hours, only 3% down and asusdec_wake inactive. I will report back if things change.
Will add always turning this off when tablet screen is off to Tasker. Interesting that it caused this huge battery drain, given that gps and wifi was off anyways. Wakeups from com.google.android.gms decreased from many to nearly none when turning off location access, perhaps it is sufficient to turn of google apps location access in settings.
Thanks again!
Click to expand...
Click to collapse
It's Google now constantly polling for your location as far as I can tell.

[Q] Mi2S High Idle Drain (wakelock?)

I have a Mi2S and I'm running the latest stock ROM 4.4.23.
Ever since the 4.4.11 update I've had poor idle battery life.
Before that when I look at my battery usage, as long as I have good signal and the screen is off, the battery level graph is flat.
Now, almost always when my phone is idle, no matter what there is some heavy drain, it was approximately 25% over 12 hours.
I've tried all the MI2S updates since then and they are all having this issue. I have not installed any new apps or changed anything on my current ones.
Attached are some wakelock detector screenshots.
Sometimes 小米服務 has many wake alerts, but sometimes it does not. Weather app is disabled, and autosync is disabled too. Occasionally 小米服務 does not have many wake alerts but that doesn't seem to reduce idle power draw, and I think it had this many wakes before as well.
Also the 3h wakelock app is the music player; the idle drain happened when the music player was off.
Thanks for reading.

Bump...

So I spent a night in airplane mode, and voila! 3% drain over about 12 hours!
I'm still trying to figure out exactly what it is, but whenever I get the chance to I'm going to spend another night in airplane mode with wifi on.

Bump...

There is a nice little utility app called power tutor, which shows you exactly which app drains your device. Maybe the problem isn't rom related...
You can find it on the play store.

[Q] Battery was great for only one day..

Soo! again with another battery post..
Okay i followed some rules someone helped me with the other day in regards to resetting the whole phone and updating it, which i did and the battery was fixed! now untill about 2pm to day my phone was lasting all day i mean since 8am it went from 100% to around 70% and said i had like atleast 1 day with stamina mode on..
Now its at 65% its telling me i have 4 hours remaining without stamina mode and now 11 hours with stamina mode..
Can someone explain why to me? i mean i don't think i have loads of things on that are heavy on battery life.

have you looked at the battery stats to see whats eating the battery?

Richy99 said:
have you looked at the battery stats to see whats eating the battery?
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Mainly the screen, i noticed tho soon as i had to use my phone to be a satnav on google maps it enabled high active location settings, but after i finished i turn the location settings back to battery saver mode so i cant see why it hasn't changed the battery daily span, i mean the screen is the biggest consumer at 29% then snapchat at 15% then some more social media but there below 14%

gps and using it as a sat nav will use the battery quite a bit as the screen is always on, try turning the brightness down

I just, cleared the date and cache on my stamina mode and reset the phone and it seems to have fixed it, i will apparently get 4 days and 11 hours out of my stamina mode now on 96% battery. i have adaptive brightness on tho btw, so i'll just turn it off and lower my screen too

bradd95x said:
I just, cleared the date and cache on my stamina mode and reset the phone and it seems to have fixed it, i will apparently get 4 days and 11 hours out of my stamina mode now on 96% battery. i have adaptive brightness on tho btw, so i'll just turn it off and lower my screen too
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Click to collapse
There is a bug in the Stamina Mode statistics. They will only work for the first day and then start showing the wrong time remaining, but don't worry about it. Although the time remaining is wrong, Stamina mode should still be working. You can test this by allowing the phone to sleep for 30min when connected to wifi and then wake the phone to see if wifi is still enabled. If the wifi icon is not showing, but then pops up shortly after waking the phone, then Stamina Mode is working.

Question Sleep Tracking Battery drain

Hi everyone.
I got a watch 4 classic a few days ago and I've been liking it a lot. I've heard that battery life is a bit tricky in the first few days until the device learns my patterns and everything but I really got a bit frustrated with the sleep tracking drain. Got around 20% drain in the first couple of nights without any sensors enabled besides HR every 10 minutes.
From what I've read this is new as the previous generations had very little drain with sleep tracking but I've also seen some people with much better battery drain with watch 4 as well in the same scenario as myself. Is there anything known to cause this differences in battery drain?
Thanks

drained 13% for me with both hr and blood oxygen enabled constantly.
make sure enable bedtime mode

15% drain with HR/SPO2 set to continuous with snore tracking. Make sure you kill all background apps before sleeping, ensure you dont have a battery sucking watchface....and put it to bedtime mode to ensure it doesnt wake up and drain battery when you go about doing your sleep things

dreamtheater39 said:
15% drain with HR/SPO2 set to continuous with snore tracking. Make sure you kill all background apps before sleeping, ensure you dont have a battery sucking watchface....and put it to bedtime mode to ensure it doesnt wake up and drain battery when you go about doing your sleep things
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This is something I've only recently started paying attention: background apps. I'll do a few tests on it.
Thanks for the heads-up

How to kill my background apps?
dreamtheater39 said:
15% drain with HR/SPO2 set to continuous with snore tracking. Make sure you kill all background apps before sleeping, ensure you dont have a battery sucking watchface....and put it to bedtime mode to ensure it doesnt wake up and drain battery when you go about doing your sleep things
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Click to collapse

ctibor said:
How to kill my background apps?
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Click to collapse
Swipe up to show your apps drawer....tap on the 2 circles icon (recents) and scroll all the way to the left and tap close all

For me (SGW 4 Classic LTE) the battery drain in sleep tracking with HR only I get more than 25% drain. I would like to add that the LTE variant, with or without mobile plan, drains more than 60% of my battery even with Mobile networks turned off from the Settings menu. The firmware is DUJA.