True, Rated amps is set for 40A & Phase at 80A, 45mph isn't too bad! Paul (cellmans) 24fet with Jpegy to possibly be fixed, Lyen 24fet shipped back to him to be fixed, Zombiess 4115 on its way to me. Will see what happens.hjns wrote: It is, but only if you keep amps low. If you start pulling more than 40A at 20S, you are pushing the limits of a 12FET 4110 controller. If you regularly pull higher amps, consider an 18FET or 24FET controller.