Description: voltage range: 2-4 Lipo or 5-12 NiMH batteries. Protection voltage: 6v (factory can be set), when the voltage protection is effective, the throttle motor will be activated for 3 seconds to stop, and the throttle valve can be operated again for 3 seconds. Protection temperature: 90 degrees Celsius. When the ESC temperature reaches 90 degrees, the ESC will stop working completely until the temperature drips down 90 degrees. Size: 40x27x35mm/1.57x1.06x1.37inch Specification: Forward: Continuous current 80A / peak current 480A Reverse: Continuous current 60A / peak current 300A 2 lithium batteries or 6 nickel-metal hydride 540, 550, 775 size motors: ≥12T or RPM less than 20,000rpm. 3-cell lithium or 9-cell Ni-MH 540 550, 775 size motor: ≥18T or RPM less than 15000rpm. 4 lithium batteries or 12 nickel-metal hydride 540, 550, 775 size motors: ≥24T or RPM less than 10,000rpm. BEC output: 5v / 3A Package Includes:(3 Pack) 1 Piece 480A Electronic Speed Controller