I installed this controller in an old Razor scooter, with two 36v hoverboard batteries and a 24v 350w motor. The controller works well, although I wish it was a little more gradual on the slow end. It kicks in a bit hard from a stop. But it supplies power well for hills. All the connectors were wired correctly, and enough of them were labeled to be able to connect it properly.I wish there were a bit more documentation, however. I’d love to know if there’s a diode to prevent current from the motor while coasting from entering the electrical system. (there must be.). I’d like to know if there’s any way to implement regenerative braking. I’d like to know how many amps it can handle. Unfortunately, there is no documentation of any kind, and apparently no way to contact the seller to ask about it. If it were better documented I would give 5 stars.