TRAILER BREAKAWAY SAFETY: The Tekonsha Trailer Breakaway System is designed to bring a trailer safely to a stop by activating its electric brakes should it become disconnected while being towed. For use on 1, 2 or 3 axle trailers equipped with electric brakes. FAST RECHARGE: Multi-Stage Integrated Charger provides a fast recharge up to 12.8 Volts. Once the trailer breakaway battery is fully charged, the automatic float mode is designed to provide a continuous charge without overcharging. PUSH TO TEST LED: Push to test LED’s provide fast and easy battery testing status and indicate fully charged (Green), charging (Yellow), or recharge (Red). CORROSION RESISTANT: Weather/corrosion resistant, the heavy-duty polymer case of the trailer breakaway kit protects battery and charger. EASY INSTALL: Quick and easy to install, the breakaway system offers flat surface mounting convenience. Note: Make sure battery is fully charged prior to towing.