6 / 12 Volt Battery Load Charging Cranking Test Tester Quickly and accurately determines batteries state of charge and also tests battery chargers ability to charge a battery Heavy duty color coded copper plated clamps Heavy duty ventilated chrome plated steel case Tests: 6 / 12 Volt batteries and charging systems up to16V Over All Dim: 6-1/2"L x 3-1/2"W x 12"H