Eliminate the inconvenience and danger of pulling your battery cable with the Automatic Battery Disconnect from Roadmaster Inc. After the initial installation, your vehicle can be towed and then driven without any further adjustment to the battery. The Automatic Battery Disconnect is ideal for anyone towing a Jeep Liberty, Jeep Wrangler or any other vehicle that must be towed with the battery cable disconnected. The Automatic Battery Disconnect provides a constant charged current to the battery during towing, charging the battery up to full capacity. There is also a positive current source for break-away systems or other accessories which must be connected to the battery. The unit works on virtually all 12-volt batteries. For more information visit Roadmaster.