The battery is a crucial component of your classic R107 Mercedes-Benz, ensuring reliable starts and proper functioning of the electrical system. Regular maintenance and correct handling will help extend its lifespan and prevent unexpected failures.
Battery Location and Maintenance
🔋 Battery Location:
The battery in the R107 is located in the trunk, providing better weight distribution and protection from engine heat.
🛠 Routine Battery Maintenance:
- Check the electrolyte level in each cell every three months, increasing frequency in hot climates or summer months.
- Use only distilled water to refill the battery—never tap water or other liquids.
- Avoid metal funnels or objects that might damage the overfill-protection diaphragm.
- To check the charge level, use a hydrometer by inserting it through the overfill-protection diaphragm to take an electrolyte sample.
- Coat the battery terminals with acid-proof grease to prevent corrosion.
- Keep the battery clean and dry to maintain optimal performance.
Battery Charging and Longevity
⚡ Maintaining Charge:
The lifespan of your battery depends on its charge level. If the vehicle is driven mostly on short trips or left unused for long periods, the battery may discharge quickly. Regularly check the charge level and use a trickle charger if needed during extended storage.
⚠ Charging Safely:
- Always disconnect the battery before using a charger.
- Never charge the battery while it is connected to the vehicle’s electrical system—this can damage sensitive electronics.
Battery Safety Precautions
🚨 Handling Warnings:
- Battery fluid contains sulfuric acid, which is highly corrosive. If it contacts skin, wash immediately with water and seek medical attention if necessary.
- Hydrogen gas is released by the battery and is highly flammable. Keep flames, sparks, and cigarettes away from the battery.
- Never disconnect the battery while the engine is running, as this can damage the alternator and electronic systems.
- When towing the vehicle, do not disconnect the battery—it must remain connected for proper operation of electrical components.
Conclusion
Proper battery maintenance is essential for the longevity and reliability of your Mercedes-Benz R107. Regular checks, distilled water refills, and proper charging practices will help keep your classic car running smoothly while ensuring safety and performance.
