Also try my battery saving tips here! Good Results!

JellyBean





KitKat





Sony Xperia Z2 (D6503)
Bootloader Status: UNLOCKED!
ROM: eXistenZ v2.0.0
Kernel: Stock


Samsung Galaxy S4 GT-I9505
ROM: Paranoid Android Alpha
Kernel: Stock PA


JOIN THE XPERIA Z2 FACEBOOK GROUP HERE
MAXIMIZE THE BATTERY LIFE OF YOUR ANDROID DEVICE

Retired
Samsung Galaxy Note 3 (SM-N900), Samsung Galaxy S4 (GT-I9500), Samsung Galaxy S3 (GT-I9300), Samsung Galaxy S2 (GT-I9100), Sony Xperia Arc, Sony Xperia Neo V, HTC Desire HD