Using Micro 420 Battery Tester (Gasoline Engines): Notes

Fig 1: Identifying Micro Battery Tester

Courtesy of CHRYSLER LLC

NOTE: The Micro 420 battery tester should only be used to test vehicles equipped with gasoline engines. If the vehicle being tested has a diesel engine the OTC, One Step Battery Analyzer and Charger (OTC) special tool number OT-3641 or equivalent should be used to test the battery.

Always use the Micro 420 instruction manual that was supplied with the tester as a reference. If the instruction manual is not available the following procedure can be used:

WARNING: Always wear appropriate eye protection and use extreme caution when working with batteries. Failure to do so may result in serious or fatal injury.