Cheers everyone,
well it looks like minimum is 3 x 3ah 36v packs,
not sure my budget can run to £500 and also buy new chargers, I wonder if you can buy Sanyo N-3000CR racing packs as ive seen 3.3ah 7.2v for £23 that was gp though, but they are alot cheaper.
Oh Ed, better not blink I normally get airtime in the arena so im not in it very long !!