Tekonsha Breakaway System w/ Push To Test LED. These Camping Gear Accessories from the fine people at Tekonsha feature a multi-stage integrated charger that quickly provides a recharge up to 12.8 volts. For those that need more assurance the Tekonsha Emergency Breakaway Systems offer an automatic float mode that provides a continuous charge without overcharging. Lastly there is a push-to-test feature that lights up when the battery is fully charged. This is intended for use on single dual or triple axle trailers equipped with electric brakes. The battery's four diode array delivers energy when your trailer's electric brakes are disengaged. Get a Tekonsha Breakaway System today and rest easy Package Contents: Tekonsha Breakaway System With Push To Test LED Tekonsha 50-85-313: Breakaway System w/ Push To Test LED