The Performance Tool W89203 Computer Memory Keeper is a must-have tool for anyone who doesn't want to lose their settings when they need to change or temporarily remove their vehicle's battery. The keeper works by maintaining voltage continuity to your engine computer, clock, and radio memory, ensuring your vehicle's important settings radio presets, ECM codes, and learned procedures are saved for up to four hours. This easy-to-use tool simply plugs into your vehicle's utility plug, making it simple to use and ensuring a secure connection. Plus, it uses a standard 9-volt battery (not included), so you can use it anywhere without needing an external power source.
- For maintaining voltage continuity to engine computer, clock, and radio memory when vehicle battery is disconnected.
- Retains radio presets, ECM codes, and learned procedures up to four hours.
- Plugs into vehicle's utility plug
- Uses 9 volt battery (not included).
