The model 8650 Tester is designed for the Fleet Operator, Parts Jobber or Ag-Industrial dealer who requires a powerful tester capable of testing alternators and batteries for full output. The unit fully load tests alternators and generators to 165 Amps (12 V) intermittently to 190 Amps and also does a free run starter test. The 8650 will load test batteries to 1000 CCA. There are two easy to read analog meters: a combination 0-35 Volt output voltmeter and auxiliary voltmeter (stator or diode trio voltages) and a combination 0-200 Amp and 0-500 Amp DC ammeter. There is a pre-test for reversed lead connections or shorted alternator diodes before turning on the motor. This feature prevents possible damage to the tester and alternator. The sliding ears with stepped pins hold alternators as the manufacturer intended - by the alternator mounting ears. Starters are held in a slide-in "V" vise. Drive motor horsepower - 5 HP single speed. Drive motor power and phase - 220 Volts AC - 60 Hz single phase. Carbon pile 18 - .25"x4"x4" plates. Adjust from 0-500 Amps - Test Voltage - 12 & 24 Volt. Serpentine pulley included. Test Leads -TBUNI Lead only. MADE IN USA