Charging Procedure

TOOLS REQUIRED
ST-1201 Battery Side Terminal Adapters (Pair) GM P/N 12303040

CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.

NOTE: Do not use the boost, jump start, crank, or an equivalent setting that may be available on the battery charger for prolonged charging of the battery. Using such settings may damage the battery due to overheating, excessive gassing, or spewing of electrolyte from the vents.

1. Do not charge a battery with a clear or light yellow hydrometer. Replace the battery.

2. Do not charge a battery with a green hydrometer dot unless it has just been discharged, such as in cranking the engine.
3. When charging side-terminal batteries while on-vehicle, use the following procedure:
3.1. Turn OFF the charger.
3.2. Connect the charger positive lead to the positive booster cable terminal.
3.3. Connect the negative charger lead to a solid engine ground.
4. When charging side-terminal batteries out of the vehicle, install a terminal adapter kit (AC Delco P/N ST-1201, GM PIN 123033040, or equivalent). The terminals must be tight against the lead terminals of the battery to prevent excessive resistance between the adapters and the terminals.
5. Make sure all the battery terminals are clean and tight.
6. A 40-50 ampere charging level is recommended for a discharged battery.
7. Charge the battery until the hydrometer has a green dot.
8. Inspect the battery every half hour after starting the battery charger.
9. Tap the hydrometer lightly to dislodge any air bubbles. The bubbles can cause a false indication.
10. Test the battery after charging. Refer to Battery Check.
Testing and Inspection