PMD Products 500 Amp Carbon Pile Battery Load Tester 12V Volt with cable sense wires Adjustable load from 0 to 500 amps, features built in cable sense wires Ammeter reads AMPS, Amp-Hour, Battery Cold Crank # Voltmeter 0- 16V scale Voltmeter scale reads battery condition with temperature, Voltmeter scale reads reads Pass/Fail Test 12 volt batteries, alternators, regulators and starters by applying a variable load on the system to simulate operating conditions. 43" Long Cables. Separate color-coded volt and amp meters.