I'm going to buy Casio QV-5700 with 1MB microdrive,

I want to go to Mongolia, and probably there will not be occasion to load
batteries, so,

Does any body know:
  - how many pictures (autofocus, no flash) Casio QV-5700 can do on new
batteries 2000mAh?
  - is there any low energy option (turn of forever LCD, and Flash)

in my old HP some time after turn off lcd, it turing on again)

Piotr Chlebek