The Tekonsha breakaway system for one- to three-axle trailers equipped with electric brakes activates trailer brakes upon separation of rig. Includes battery box and 5-amp battery with push-to-test LED test meter that indicates whether it's fully charged, charging, or needs to be recharged. Integrated multi-stage charger provides fast recharge up to 12.8 volts. Breakaway switch has 7-1/2in. lead wires.