KTI's 500 AMP carbon pile load tester is great for simulating actual cranking loads. It tests 12 volt batteries rated as high as 1000 CCA or 160 Amp hour. Quick 15 second test cycle with audible tone to indicate test completion. Unit can also test alternators, regulators and starters. Carbon pile load tester features 500 Amp side clamps and heavy-duty stranded copper cables. The large, color-coded dual meters make the unit easy-to-use. Also includes temperature compensation chart. One-year warranty.