The Midtronics PBT-300 Battery/Diagnostic Electrical System Tester includes all the features of the PBT-200, plus an expanded measurement range from 100–1,400 CCA. Green and red LEDs give fast decisions on starter and charging system testing. The tester features starter system testing and charging system testing.
- Starter system testing: pressing the down arrow displays the captured voltage from cranking the engine.
- Charging system testing: pressing the up arrow displays the captured high voltage from the alternator.