Operation CHARM: Car repair manuals for everyone.

Abnormal Battery Discharging

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