Rockford RFD4902 Pocket Power XD Mini Jump Starter Jump oversize vehicles. Features built in circuit diagnosis and alarming system, clamps designed with a reversed connection warning, and an internal battery has a low voltage warning. New intelligent cable with built-in over charge, reverse polarity protection and reset switch. 300 / 600 amp rating, 18000 mAh battery. Includes: (2) USB charging ports in addition to a 19V and 12V charging ports, (8) computer recharging tips and 4:1 pigtail phone charger tips.