Atrocious battery life with Cyanogenmod 11 on Galaxy S4 mini I love so many things about CM10, but the battery life is an absolute nightmare. I made a comparison against the stock firmware by leaving the phone unused for as long as I could. Results:

Stock: ~5.2 days standby to full discharge

CM10: ~1.7 days of standby to full discharge

Is there anything I can do about this, or is CM10 simply not supported properly on my device?



Made these screenshots on my S4 mini by leaving it unused for as long as I could. In the CM10 example it actually powered off due to low battery and I had to plug it in before it would even turn on again, so this is NOT due to any calibration; the battery was actually empty at the end of the test. But even if you take the final charge as 15%, the numbers are still atrocious.
These are the settings I use on my phone, which have helped with the power consumption.

Under Performance

-> Processor


CPU governer: ONDEMAND


-> Profile


Power save


General Settings page

-> Location Services: off

-> Bluetooth off

-> Mobile Data (3g): off

There are also some apps that may be helpful, one of which (I've only heard of it not actually used) is called SnapDragon Battery Guru.

If you can't find the performance settings turn on developer options (instructions here)