Motor Controllers Main motor controller ( link ) We made the decision to go with the  Flipsky 75350 . We made this decision because of prior years experience with Flipsky controllers and they give some of the best functionality and configuration.  Pros High power output Built in water cooling Multiple forms of communication Highly configurable motor control Cons Size and weight Overpowered for current  motor  selection Specs Voltage: 14-84V (safe for 3-20S) Continuous Current : 50V/350A,75V/250A (Duration depends on external heat dissipation) Instantaneous Peak Current : 800A Supported sensors: ABI, HALL, AS5047, AS5048A EPRM: 150000 Phase filter: Yes