| Malfunction | Cause | Elimination |
| 1 | 2 | 3 |
| The output power is too low, the battery voltage drops sharply | The battery is discharged | Charge the battery |
| Charging voltage too low | Check the voltage regulator, replace if necessary | |
| Contacts are loose or corroded | Clean the contacts and lightly lubricate the underside with protective grease or petroleum jelly. Tighten the mounting bolts | |
| Poor ground connections between the battery, engine, and body | Check the ground connections, if necessary, make metal jumpers or tighten the threaded connections. Replace corroded bolts with zinc plated bolts | |
| Excessive self-discharge of the battery due to contamination of the electrolyte | Replace the battery | |
| The battery is sulfated | Charge the battery with a low current. If after the charge-discharge cycle the output power is still low, then replace the battery | |
| The battery is worn out, the active mass of the plates is low | Replace the battery | |
| Insufficient battery charge | Faulty generator, voltage regulator or connecting wires | Check the generator and voltage regulator, replace the generator if necessary |
| The tension of the generator drive belts is loose | Check the drive belt tension and adjust if necessary | |
| Too many consumers are connected | Install a battery with a higher capacity, use a more powerful generator | |
| Electrolyte level too low | Overcharging or evaporation of electrolyte, especially in summer | Add distilled water to the required level for a charged battery |
| Electrolyte density is too low | The battery is discharged | Charge the battery |
| The density of the electrolyte in one of the cans is noticeably lower than in the other cans | Short circuit in one of the cans. Replace the battery | |
| The density of the electrolyte in two adjacent cans is lower than in other cans | There is a leak in the wall between the cans, i.e. a conductive connection is formed between the cans, and they discharge. Replace the battery | |
| Short circuit in the wires | Check the electrical system |
Diagnosis of battery malfunctions (Nissan Murano Z50)
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This article has been reviewed: Makar Filatov
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