MotoBatt MBJ4500 Lithium Jump Starter Long life lithium battery technology with 5x more cycle life and 4x-5x more cranks than lead acid battery jumpers Convenient and powerful 600 peak ampere and 405 cranking ampere in a 1.7 pounds 5 inch x 2 inch x 7 inch footprint Spark free, contains no lead, mercury or cadmium USB Power Supply for charging tablets, phones, mp3 players and more Low charge warning beeper, dual LED work lights and AC and DC chargers included