thanks
on my firestorm flux i use a druatrax 6cell 4600 mah deans connector, my brother just has a regular firestorm and the chassis is the same he uses 8.4 7cell sub-c flat packs they fit just fine as for the scx10 right now its has a 7.2 stick but it just uses velcro straps so you can fit just about what ever you like on it.
as far as battery life
my firestorm at full blast about 30 to 35 min depending on the terrain a
regular firestorm on 8.4 4800mah around 40 min
and the scx10 over 50 min agian depends on the terrain mud really takes a toll on the battery life
thanks again for the info.