Hopkins The Engager 20099 Engager Break Away Systerm W/Battery Meter (Retail Box) Reviewhttp://tinyurl.com/kejubtb Hopkins The Engager 20099 Engager Break Away Systerm W/Battery Meter (Retail Box) Activates trailer brakes upon separation from tow vehicleBuilt-in battery meter with LED test lightsLED's indicate: fully charged, re-charge, or chargingConvenient test button verifies battery chargeBuilt-in battery charger that charges battery while plugged into the vehicle
