Tests 12V batteries, alternators and starters Tests batteries to 1000 CCA Color-coded, temperature compensated pass/fail bands on voltmeter for accurate assessment Separate ammeter to enable precise loading of battery Heavy-duty, color-coded clamps for secure battery connections Durable steel case Specifications: Voltage: 12 Volt Load: 0-500 Amps 43" #4 Gauge Cables Tests: Battery State of Charge, Battery Load Test, Alternator Output Test, Starter Draw Test Cooling Method: Convection Display: Ammeter + Voltmeter Feedback: Audible Alarm Signals End of Load Test