Memory saver & charger: The MS4000 saves all drive-ability codes & settings when disconnecting/changing a vehicle's starter battery. It also protects settings & codes for anti-theft radios, clocks, keyless entry systems & much more. 
Charges batteries: A 12 volt, 4.5 amp hour sealed lead acid battery is included inside the unit. The direct wired OBDII connector plugs directly into the vehicles OBDII port. 
Protects & saves: This unit is protected by a 4 amp circuit breaker & can be used for anti-theft radios, clocks, keyless entry systems, alarms, cell phone settings, GPS Memory, TPMS & other memory-related functions. 
Innovation at its finest: We make high quality hand tools & accessories, tool organizers, ratchet sets, LED flashlights & work lights. We specialize in tools for battery, heating & electrical work, for both the professional tradesperson and home DIY'er!