The AR9100 is designed for models using multiple servos that draw excess current or multiple high-torque servos, such as giant-scale airplanes and jet models. It features a robust power bus designed to manage high-current loads, as well as dual 16AWG battery input leads with EC3 connectors for use with larger battery packs. This makes it possible to support high-current systems straight through the AR9100 without the need for a separate power system. As an added measure of safety, Spektrum designed the AR9100 with a soft switch. Servo current is routed around the switch so, should it fail for any reason, power to the system will not be interrupted.