Designed to work exclusively with the AR 2000 L and AR 3000 L backpack batteries, this connecting cable is a necessary component in transferring power from the backpack battery to compatible AP system battery products with a corresponding socket. This connecting cable can also be paired with certain AP products with an onboard battery slot when paired with the AP adapter (sold separately). For users seeking the extended run times of a backpack battery, this accessory is a must have. Visit us today to pick up your connecting cable. Stop by our dealership today!