Aprox amp draw on 9XL using 6S lipo
 

I just thinking i have very good deal on 3S 10C-12C lipo 20C burst 4000mah lipo.
LSP Truggy will be geared to 35-40 mph
Continious draw can be up 40-48Amps
Can i use those lipos? I want keep my truck light.

If they stay above 3V per cell, you could use them.

Hard (impossible) to tell.

the 9XL at 40mph can take more power on acceleration.

I wouldn't.

I used a 7xl on 6s (I know it's a much hotter motor) but on 12c Lipos, it ran like poo. My advice would be save up for the better packs, you will definatly not be losing out, so worth it (20c/Flightpower/Maxamps)!

I agree...don't cheap out on cells if you can avoid it.

pinolelst