Trailer Breaks Breakaway Kit Electric Breakaway System Controller Kit with LED Indicator for 12V Vehicle Item Type: Trailer Breakaway KitMaterial: PPActivates trailer brakes upon separation from the tow vehicle. Built in LED battery meter verifies battery charge. Led's Indicate: Fully charged recharge or charging. Complete System Includes: Box battery charger 7 in; Switch; Built in battery charger charges battery while connected with the tow vehicle. During a separation, the system works with your trailer's electronic brakes to bring it to a stop much faster than it would on its own. This is done using an onboard battery attached to the trailer and a switch system connected to both the trailer and the vehicle. When the trailer becomes disconnected, the breakaway switch is triggered and directs the battery power to the trailer brakes. With 12V 5AH built in battery Fitment: Universal fit for 12V vehicle