If your having poor battery performance after updating your firmware try re-calibrating the battery, when you flash your firmware the "BatteryStats.bin" file will be unreliable, run the program below and it will write a true "BatteryStats.bin" Try re-calibrating your battery - https://play.google.com/store/apps/d...erycalibration
Used the calibration tool after a flash on the V711, it worked and my battery was lasting 5 hours with surfing all the time and it lasts over 9 hours with wifi off and reading