Can you post some of your readings at various levels of the backlight from on to half to 1/4 to off? Bluetooth on/off to offline mode?

I learned to do without so bright a picture and stretched the battery out many hours...no matter what the radio transceivers were doing.

I looked at some of the 4" display backlight LED specs on new LCD units. 7 bright LEDs were drawing around 800ma at full brightness! No wonder the battery croaks....