Breakaway System with Rechargable Battery and Charger - This breakaway system with charger is for use on 1, 2, 3 or 4 axle trailers with electric brakes. It incorporates the highest quality components in trailer breakaway systems and meets or exceeds Department of Transportation (DOT) specifications regarding trailer breakaway and holding requirements. Feel safe with the knowledge that, should a breakaway occur between your tow vehicle and your trailer, this breakaway system will automatically apply consistent braking power to your trailer brakes, bringing it to a stop. It is quick and easy to install. Kit Includes: Polymer Battery Case with A-Frame or Post Mounting Bracket; Rechargeable Sealed 12 Volt 5 Amp/hour Lead Acid Battery and Terminals; Breakaway Switch and DC-to-DC Heavy Duty Quick/Maintenance (Two Stage) Battery Charger. (Only the battery is pictured).