Micro 420 Battery Tester (Gasoline Engines)
WARNING: This page is about a different car, the 2009 Jeep Patriot and 2009 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.
The Micro 420 automotive battery tester is designed to help diagnose the cause of a defective battery. Follow the instruction manual supplied with the tester to properly diagnose a vehicle. If the instruction manual is not available. See Electrical/Battery System/BATTERY - Standard Procedure which includes the directions for using the Micro 420 battery tester.