im using a 4 drill motor for in a ram bot i have and my reckoning is that a drill motor can pull 25-30a so that a max of 120a so i bought a Turnigy nano tech 4.0, 4s lipo with a bust current of 50c.

so 4x50= 200a so im covered if it stalls and the continuous current is 25c so ive got 100a for general running

and on my first wheels of the ground test i tried my origionl nimh battery and the lipo and you could see and hear the difference


oh also i only worked out the amps for the motor because the sabertooth i used originality caused the motors to judder when it was pushing things