1.69" (43mm) x 1.3" (33mm) x 0.94" (24mm) , Weight (w/o wires): 1 oz (29 g) Max Input: 12S LiPo (50.4V) Max Output Current: 20 amps peak Adjustable Output Voltage: 4.8V-12.5V Max Continuous Current (Input Voltage/Max Continuous Output Current): 16V/15A, 24V/13A, 32V/11A, 40V/9A, 48V / 8A Key FeaturesRated for up to 12S input (50.4 volts) Peak Output of up to 20 ampsFully adjustable using the Castle Link USB Adapter and a Windows PCLength: 1.69 in (43mm)Width: 1.3 in (33mm)Height: .94 in (24mm)Weight: 1 oz (29 grams) without wiresOverviewThe Castle PRO BEC is intended for use in larger RC cars, electric aircraft, and helis that have high power demands for their radio/servo systems. It is ideal for most electric helis 500-size and larger. It will also work well in larger electric powered RC aircraft and RC crawlers and Monster Trucks that have high-powered servos.
I bought this for my Mamba Monster Traxxas Rustler and it's nice to have because if I decide down the road that I want to put a more powerful steering servo, fan on the motor or a gyro, I won't have to worry about my $140 esc frying out. Many people who run a set up like mine usually buy the standard CC BEC (non pro) but I went ahead and got the PRO because it's only $12 more has 2X the power and you can hook the actual BEC to your com..