SolarKing lithium batteries are the future of battery storage. Lithium batteries are much lighter than traditional lead acid batteries and deliver unrivalled cycle life, more than 4 times more cycles compared to lead acid batteries. Perfect for use in caravans, marine, camping and home storage applications. The batteries are fully sealed and a built in battery management system for safety protection. This model SolarKing lithium battery use’s Active cell balancing technology to balance the internal battery cells not only whilst charging but also whilst discharging. This assist’s in getting the battery as close to 100% charge levels as possible.