Here are ten routine maintenance checks that should be carried out on a vented type lead-acid engine starting battery system:
- Visual Inspection: Inspect the battery case for cracks, leaks, or signs of corrosion around the terminals. Clean any corrosion using a baking soda and water solution, following proper safety precautions.
- Terminal Tightness: Ensure the battery terminals are clean and securely tightened. Loose terminals can lead to poor starting performance and increased resistance.
- Electrolyte Level: For vented batteries, check the electrolyte level in each cell. The level should be between the upper and lower level indicators on the battery case. If low, top up with distilled water only, not battery acid.
- Electrolyte Condition: Visually inspect the electrolyte for any discoloration or cloudiness. A clear, light brown or straw color is normal. Cloudy or dark electrolyte might indicate internal issues.
- Terminal Voltage: Measure the battery’s terminal voltage with a voltmeter. A fully charged battery should read around 12.6 – 12.8 volts DC. A significantly lower voltage might indicate a discharge or internal fault.
- Load Test (Optional): Periodically perform a load test using a dedicated battery tester. This simulates the high current draw during engine starting and provides a more accurate assessment of the battery’s health and cranking capability.
- Cleaning: Keep the battery top and surrounding area clean and free of dirt, debris, or moisture build-up. This helps prevent corrosion and potential leakage currents.
- Ventilation: Ensure proper ventilation around the battery, especially for vented types. These batteries release hydrogen gas during charging, and adequate ventilation is crucial for safety.
- Storage: If the battery will be stored unused for an extended period, it’s recommended to disconnect it from the electrical system and store it in a cool, dry place. Periodic charging during storage might be necessary to prevent excessive self-discharge.
- Age and Service History: Maintain records of battery age and previous maintenance performed. Lead-acid batteries have a limited lifespan, and regular checks become even more critical as the battery ages.
By following these routine maintenance checks, you can help ensure the optimal performance, reliability, and lifespan of your vented lead-acid engine starting battery system.