The OEMTOOLS 500A 12V Battery Load Tester, No. 24336, features two 4.5" analog meters to display amps and volts and a manual adjust control knob. The DC test leads are 2-1/2' 4 AWG cable. A buzzer sounds after load has been engaged for 15 seconds. The battery load tester is able to test batteries to 1,000 CCA and enables starter and alternator assessment. In addition, it has large, easy-to-read gauges and heavy duty clamps to penetrate corrosion on battery terminals.