[David McLaughlin]

The great thing with hobby quality RC is thst you can tinker and improve. The stock electronics may not be able to handle higher voltage but higher MAH is fine. If you rrally want to get into it, change the speed control to handle a brushless motor and LiPo batteries. You may even be able to drop in a LiPo pack now but without a low voltage cut off you need to stop yourself before the battery is drained.