Turns any jump starter with a power port into a vehicle memory saver. Used in conjunction with a jump starter, it will preserve vehicle codes and electronic presets while a vehicle battery is disconnected. Compatible with all Booster PAC, Truck PAC and Jump-N-Carry models except ES8000. Note: when using any jump starter as a vehicle memory saver, care must be taken to secure both battery cables when the vehicle’s primary starting battery is removed. Failure to do so could result in property damage and/or personal injury.