| Malfunction | Manifestation and possible causes | Elimination |
| Sulfation, oxidation or stains on the battery plates. | 1. Crack in the battery. | Replace battery. |
| 2. Large discharge current for a long time. | Replace battery. | |
| The battery discharges quickly under load. | 1. The battery charging system is faulty. | Check the alternator, regulator/rectifier, wiring and take necessary actions to restore normal charge. |
| 2. The battery plates have collapsed due to overcharging. | Replace the battery and check the charging system. Replace battery. | |
| 3. Short circuit inside the battery. | Fully charge | |
| 4. Low battery voltage. | battery. Replace battery. | |
| 5. Old battery. | ||
| Battery sulfation. | 1. The charging current is too high or too low. (If the battery is not in use, it should be checked at least once a month to avoid sulfation) | Replace battery. |
| 2. The battery has been exposed to low temperatures for a long time. | Replace the battery if severely damaged. | |
| The battery discharges quickly without load. | Contaminated container. | Clear. |
Battery sulfation is a phenomenon in which the plates of a lead-acid battery, under certain conditions, become coated with lead sulfate, which reduces the capacity of the battery.