"Sulfation", acidic white powdery substance or spots on surface of cell plates
| Cracked battery case. | Replace the battery. |
| Battery has been left in a run-down condition for a long time. | Replace the battery. |
Battery runs down quickly
| Trouble in charging system. | Check the generator, regulator/rectifier and circuit connections and make necessary adjustments to obtain specified charging operation. |
| Cell plates have lost much of their active material as a result of overcharging. | Replace and correct the charging system. |
| Internal short-circuit in the battery. | Replace. |
| Too low battery voltage. | Recharge fully. |
| Too old battery. | Replace. |
Battery "sulfation"
| Incorrect charging rate. (When not in use battery should be checked at least once a month to avoid sulfation.) | Replace. |
| The battery was left unused in a cold climate for too long. | Replace if badly sulfated. |