The VIKING™ 1000 Amp, 6/12/24V Carbon Pile Battery and System Load Tester is capable of load-testing heavy duty automotive batteries rated up to 2000 cold cranking amps. This professional tester can run a full range of battery and charging system tests, including battery capacity, alternator output, voltage regulation, and charging capacity. With precise system loading controls it can test specialized metrics such as marine crank amps as well as standard crank amps.