Well, the specs say you can use a NiCd or a NiMh pack. Just make sure you use what is applicable to that ESC, that's all. Read the specs.


Features:
BEC: 3A
Constant current 30A Max 40A <10s
Li-Poly 2-3 cells; Ni-MH 4-10 cells Auto Detect


It also says in the beginning that the same NiCd cell pack can be used. 4-10 cells.

CGr.