The MBT-1 is a micro-ohm load tester designed to be an effective diagnostic tool for the operator. A fixed post positive connector and coil-cord moveable negative connector makes checking multiple batteries fast and simple. The four LED (A-D) “gas gauge” and corresponding information on the back of the tester gives the operator the information necessary to determine whether the battery is good (all four lights are on) and the battery should stay in the vehicle, or bad (one light on) and the battery should be removed from the vehicle.