FPV-POWER 50A PWM throttle controller for electric motors also features new waterproof connectors instead of Anderson plugs.
Increased electric motor run times can be achieved with a PWM as it pulses the exact amount of power needed to achieve the required speed whereas the standard throttle on the motor controls speed by passing the power through resistors which burns off the excess energy and thereby decreasing the amount of power going to the motor. There is no difference in efficiency at full throttle running with or without PWM but the lower the throttle, the greater the difference the PWM makes to increasing your run time.
It also features standard magnetic kill switch and throttle control on a dial.
The other bonus of course is having proportional throttle control which allows for precise adjustments to speed which is handy in situations such as when trolling lures. The PWM box is weather and splash proof only. Do not submerge!