Is Battery Repair Fluid Really Effective?
2 Answers
Battery repair fluids available on the market are indeed an effective repair method, capable of effectively restoring battery capacity. After one complete charge-discharge cycle, the range can increase by 5-15 kilometers. After seven complete charge-discharge cycles, the battery capacity can be restored to over 90%, extending its service life by about one year. Here are other methods: Hydration Therapy: The concentration of the battery's electrolyte is a crucial factor. When the concentration is abnormal, sulfation may occur. The battery can be discharged and then charged with a current below the 20-hour rate. After completing the charge, the sulfation phenomenon can be eliminated, and the capacity can be restored to over 80%. Shallow Cycle High-Current Charging Method: After the battery has been used for a period, sulfide salts naturally accumulate on the plates and need to be removed promptly. Use a high current within the 5-hour rate to fully charge the battery. Discharge 30% of the capacity while keeping the electrolyte temperature below 40 degrees Celsius. Repeating this process three to four times can repair the sulfation phenomenon in car batteries.
As a veteran driver with decades of experience, I've used battery repair fluid several times. It doesn't seem very effective, especially for old batteries. Back when my battery struggled to start in winter, I bought some repair fluid and added it. The voltage improved slightly at first, but it only lasted a few days before failing again. Honestly, repair fluid can at best address minor sulfation issues, like when the electrolyte level is slightly low. For genuine aging or plate damage, it's completely useless. Later, I got smarter—the real money-saving approach is to regularly check the battery water level to avoid depletion, maintain good charging habits, and use a thermal cover in winter, rather than wasting money on these ineffective solutions. In the long run, regular maintenance is far more important than temporary fixes.
