OTC MinuteMan Plus Multi-Purpose Battery/Electrical System Tester - 3131AGM
(In continental USA)
MinuteMan Plus saves you hours when you’re testing batteries, starters, alternators, regulators, and charging systems.
Special AGM test options for accurately diagnosing AGM and spiral (six-pack style) batteries.
Can switch between English and Spanish languages with a menu-based selection.
The MinuteMan Plus display shows cranking volts and amps, and indicates either “Good Starter” or “Bad Starter.” Excessive starter current draw can indicate a defective starter. Excessive engine drag, due to tight or damaged bearings or piston drag, can also cause an abnormally high starter draw.
Charging System Testing
Checks the charging system at high rpms and at idle, and stores the data. Results show regulator volts, peak amps, and a diode condition. MinuteMan Plus utilizes waveform analysis when testing alternator diodes, which provides more accuracy than the commonly used “ripple voltage” tests.
Battery Tachometer Capability
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