Battery Functions

1. ENGINE OFF: Battery energy is used to operate the lighting and accessory systems.

2. ENGINE STARTING: Battery energy is used to operate the starter motor and to provide current for the ignition system during cranking.

3. ENGINE RUNNING: Battery energy may be needed when the vehicle's electrical load requirements exceed the supply from the charging system.

In addition, the battery also serves as a voltage stabilizer, or large filter, by absorbing abnormal, transient voltages in the vehicle's electrical system. Without this protection, certain electrical or electronic components could be damaged by these high voltages.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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