Battery Discharging

Causes of Battery Discharging

Battery Diagnosis And Testing Chart:

It is normal to have up to a 30 milliamperes continuous electrical draw ON the battery This draw will take place with the ignition in the OFF position, and the courtesy, dome, storage compartments and engine compartment lights OFF. The continuous draw is due to various electronic features or accessories that require electrical current with the ignition OFF to function properly When a vehicle is not used over an extended period of approximately 20 days the IOD fuse should be disconnected. The IOD fuse is located in the Power Distribution Center and disconnection of this fuse will help prevent the battery from discharge during storage. Refer to Battery Diagnosis and Testing Table and to the proper procedures.

- Slow driving speeds in heavy traffic conditions or prolonged idling with high-amperage electrical systems in use.
- Defective electrical circuit or component causing excess Ignition Off Draw (IOD). Refer to Ignition Off Draw (IOD).
- Defective charging system.
- Defective battery