Abnormal Battery Discharging

Any of the following conditions can result in abnormal battery discharging:
- A faulty or incorrect charging system component. Use Micro 420 battery and charging system tester and refer to Charging System for additional charging system diagnosis and testing procedures.
- A faulty or incorrect battery. Use Micro 420 battery and charging system tester and refer to Battery System for additional battery diagnosis and testing procedures.
- A faulty circuit or component causing excessive ignition-off draw.
- Electrical loads that exceed the output of the charging system. This can be due to equipment installed after manufacture, or repeated short trip use.
- A faulty or incorrect starting system component. Refer to Starting System for the proper starting system diagnosis and testing procedures.
- Corroded or loose battery posts and/or terminal clamps.
- Slow driving speeds (heavy traffic conditions) or prolonged idling, with high-amperage draw systems in use.