The Comfort Connect Indicator Cigarette Outlet Plug allows the battery to be charged through the vehicle's 12-volt cigarette lighter socket. The connector has our intelligent comfort indicator (Part No. 56-870) which shows how much power is left in the battery.
*Note: Socket must be live when ignition is in the “off” position.
Compatible with CTEK US 0.8, MUS 3300, MUS 4.3 & MUS 7002