GEVC Boost Solar Charge ControllerGEVC has dual function of DC-DC Booster and Solar Charge Controller. GEVC Controller Ganz GSP 12V Solar Panel is the best solution for connecting to a 36V or 48V System of Electric Inboard Motors, Electric Outboard Motors and Golf Carts.Applications Charge a higher voltage battery from a lower voltage solar panel 12 Volt Used for electric inboard motors, trolling motors and golf carts which require 36V or 48V nominal charging system Used to charge a 36V battery