The WARN Dual Battery Control Kit not only lets you add a second battery to your UTV/Side x Side, it also saves the main battery for essential functions, such as starting the vehicle. Engineered specifically to give maximum power during winch power-in operation. Minimizes charging system overload; if both batteries need charging, the main battery is charged first. An optional manual override forces a parallel connection when you need extra power for charging a weak battery or jump-starting another vehicle. Easy to install and includes all necessary hardware. (Second battery not included.) For use with 12-volt accessories such as winches, lights, stereos and more and is designed for use with 12-volt DC magneto or alternator charging systems.