Never run out of power with an Auxiliary Battery Installation Kit. Install a dual battery set up and always have enough juice to keep chasing the off-road thrills! Electrical Function Automatic rundown protection. Electrical Requirements Allows the rider to add a second battery and or replace the original battery (18Ah or 30Ah) for a dual battery setup. Recommended to power auxiliary electrical components such as audio systems or winches. Equipped with an electronic module that prevents the auxiliary electrical components from draining the original battery. Installation & Compatibility Installs behind the seat for easy access. Requires the purchase of a second battery and battery hardware (not included and sold separately).