Associated 6039 6/12V, 600 Amp Digital Variable Carbon Pile Load Tester Easy-to-read Digital Voltmeter and Ammeter combine with the versatility of a carbon pile load to give a quick and precise determination of battery and charging system problems. Spring loaded to shut off automatically. This 0 to 600 Amp tester has unique curved discs to prevent hot spots. Heavy duty clamps with “Flexi-Spring” cable guards provide added value. - Test batteries up to 1200 CCA- Fine threaded shaft for fine adjustment- Temperature compensation chart- Easy to read digital voltmeter & ammeter combine with the versatility of a carbon pile load- Spring loaded to shut-off automatically- Unique curved discs to prevent hot spots- Tests all battery types- Made in USA of US and Global Components- Limited Warranty 1 Year Specifications Load: 600 AmpAmp Meter: Digital 0-600 AmpVolt Meter: Digital LCD 0-199.99 VDCClamp Leads: 5.5’, 4 AWGClamps: 500 AmpShipping Wt: 17 lbs Information Downloads Operator Manual Product Bulletin