Abnormal Battery Discharging

Any of the following conditions can result in abnormal battery discharging:

• A faulty or incorrect charging system component. Refer to CHARGING  for charging system diagnosis and testing procedures.
• A faulty or incorrect battery. Use Micro 420 battery 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  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.