Saves the vehicle's on-board diagnostic memory and other on-board memory components such as anti-theft radios, digital clocks, radio presets, seats, mirrors, comfort settings, etc. when the vehicle's battery is removed or disconnected. OBD II cable for fast connection to the vehicle. Cigarette lighter adapter for use with vehicles that do not have an OBD II connector. LED lights confirm circuit between the cigarette lighter/power outlet and the vehicle's battery with the ignition on or off. State of charge indicator identifies when the memory saver needs to be plugged in for recharge. Resettable fuse protects against excessive current draw through either the OBD II connector or the vehicle's cigarette lighter. High capacity, rechargeable sealed lead acid battery for extended service between charges. Power on/off switch. One complete, durable compact unit.