Android OS using 20-60% of battery. (rooted)

Colbyy · Nov 27, 2012

Sorry sure there is thing everywhere about this. But I have searched and read so much about it last night and today I am lost. Basically just rooted yesterday with sickins kernal. (US Cellular GS2 SCH R760) rooting went fine. after messing around I looked at battery usage and see Android OS using 57%. After using watchdog I noticed suspend and events/0 to be the culprits. I'm not sure though. I'm new to this. Any ways I flashed droidz's kernel tonight just to see if that made a difference or not. But it did not. But his is supposed to have good battery life anyway so I'll keep it. Any help/input on this suspend and events/0 thing would be great.

THanks.

nickdalzell · Nov 27, 2012

Try installing juice defender and recheck.

Colbyy · Nov 27, 2012

Should mention even before root. I had auto sync off, background data off. And only would turn data on for when I wanted to check facebook or instagram. I haven't changed any of that. Only thing I did was root and flash kernels.

Hadron · Nov 28, 2012

One thing you've not said: what's the battery life like? Same, better or worse? Those stats only report what fraction of the power usage comes from what component, not what the actual power usage is.

GrenW · Nov 28, 2012

A good point. If you're not syncing and not got screen on that often then there's not much left to use the battery.

The OS will use a large proportion of not very much!

BetterBatteryStats might be good at tracking down any problems you MAY have

Colbyy · Nov 28, 2012

Well I would notice the battery going down 1-5% everytime I looked at my phone where as before it didn't. But lastnight I flashed this ROM and back on sickins kernel. After phone sitting/charging through out the night the OS is only using 9% and android system using 19%. The numbers don't mean much I know but suspend and event/0 stopped coming up in watchdog which were my main concern I assumed they were the problem watchdog would give me a warning and they would both be using 80-90% of CPU I think is what it meant. Either way it didn't seem normal

Colbyy · Nov 28, 2012

Going to see how the battery and things are through out the day at work. Maybe the ROM fixed things.

Digital Controller · Nov 28, 2012

Otherwise did you perform a factory reset once you flashed it over, if not, i know issues like battery life and performance can come into play.

Colbyy · Nov 28, 2012

Digital Controller said:
Otherwise did you perform a factory reset once you flashed it over, if not, i know issues like battery life and performance can come into play.

The ROM? Yes

Colbyy · Nov 28, 2012

Too root I followed this guide didn't do factory reset. I did do all the resets and wiping before flashing the rom though.

Colbyy · Nov 28, 2012

This is what kept running.

This is some usage from today.

But been off charger at 830am and at 79% right now. So I'm not complaining

pedroc1999 · Nov 28, 2012

downlaod battery calibrate and calibrate it at 100%, you should do that everytime you reflash a ROM or kernal

ExtremeNerd · Nov 28, 2012

Colbyy said:
This is what kept running.

This is some usage from today.

But been off charger at 830am and at 79% right now. So I'm not complaining

As mentioned earlier, you have to remember that the percentage is on a 100% scale. If you're not using your phone much, and based on the pictures, you're not, something will absorb a higher percentage. I wouldn't worry about it unless you see a significant drop in life.

Use it for a few days, then check how the life is. General thought is you should get about 1% of battery drain for each minute of screen on time.

Colbyy · Nov 28, 2012

ExtremeNerd said:
As mentioned earlier, you have to remember that the percentage is on a 100% scale. If you're not using your phone much, and based on the pictures, you're not, something will absorb a higher percentage. I wouldn't worry about it unless you see a significant drop in life.

Use it for a few days, then check how the life is. General thought is you should get about 1% of battery drain for each minute of screen on time.

I know it wasnt so much the percentages I was worried about before it was suspend and event/0 coming up in watchdog. That was draining the battery a lot. But today with the reflashed ROM it seems to be more normal and suspend and event/0 havent come up in watchdog. And thanks

Colbyy · Nov 28, 2012

10hrs.. was better before all this..

ExtremeNerd · Nov 28, 2012

Colbyy, you got nearly three hours of screen on time from a 1650 mAh battery. Personally, I would say that is pretty amazing. Granted, it looks bad because it only got 10 hours on it, but that is pretty heavy usage. I don't think there is much to be done to improve life with that kind of use.

Colbyy · Nov 29, 2012

ExtremeNerd said:
Colbyy, you got nearly three hours of screen on time from a 1650 mAh battery. Personally, I would say that is pretty amazing. Granted, it looks bad because it only got 10 hours on it, but that is pretty heavy usage. I don't think there is much to be done to improve life with that kind of use.

Really? That's good to know, guess I'm doing alright then

Colbyy · Nov 29, 2012

I went back to droidz's kernel now. I have a feeling tomorrows numbers will be even better

Android OS using 20-60% of battery. (rooted)

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