bahamadude,
its a 600mah 2/3 AA nicad. I fly 3 maybe 4 flights on 1 charge and thats it, I'll charge it again. It is a small capacity but i've got a battery checker and its never gone less than full, however I won't chance my luck. It works well cos its so light! Its a great place to put the cells as it keeps the CG nicely far back.
Cabane,
good spot, yes it does need wrapping! I only just moved the battery a few days ago and wanted to go flying! Naughty naughty............