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.