RE: 8v means 8 volts.
My Hummingbird v.II runs on a 3-cell lipo. I thought I could get away with sharing the battery between the heli and the camera. I'll try it again, but use a voltage regulator for the camera.
Yes, I heard that about 9v rechargables too... but the camera comes with a 9v dry cell, which is up there higher than 9v to start with.. I was just trying to explain my thinking that it might work without a regulator.
-Mark