The Schumacher INC-7A-OBD memory saver protects onboard automotive computer memory when the battery is disconnected. It preserves stored fault codes and programmed electronic settings such as clocks, radios, seat positions, keyless entry systems and more. The unit features a 7 amp-hour internal battery, easy to read status LEDs and an automatic internal charger. The on-board diagnostics connector fits the vehicles OBD-II port. The male-to-male 12-volt accessory cord can be used on cars that do not have an OBD-II port.