How Long Does a Refurbished Battery Last?
2 Answers
Refurbished batteries generally last 3 to 6 months. Daily Inspection: First, check if there are any obvious leaks or deformities on the battery's exterior. If deformities or leaks are found, replace the battery immediately to ensure driving safety. If no issues are detected, properly connect the battery's positive and negative terminals, then turn on the vehicle's electrical self-check to see if the battery's electrolyte level needs replenishing. If replenishment is required, use distilled water or a special dedicated liquid—never use mineral water or tap water. When starting the engine, note that the cranking time should not exceed 5 seconds, and the interval between attempts should be no less than 15 seconds. If the engine fails to start, check if the ignition coil is aged or malfunctioning. Routine Maintenance: Regularly clean the battery. Use a damp cloth to wipe the battery's exterior, removing dust, grease, white powder, and other contaminants that could cause leakage from the terminals and panel. Frequent cleaning prevents excessive buildup of acidic corrosion powder on the terminals and extends the battery's lifespan. Applying specialized grease to the terminals can also help protect the battery.
It's hard to say exactly how long a refurbished battery can last. From my years of experience in auto repair, most can last about one to one and a half years at best. I've seen taxi drivers use refurbished batteries that failed after just four months due to daily charging and discharging cycles. The key factors are how much life was left in the original battery and the quality of the refurbishing process. If the internal plates are sulfated, no amount of refurbishing will help. I recommend checking the voltage every two months after installing a refurbished battery to avoid over-discharging. Winter is the toughest test for batteries—cold temperatures reduce capacity, and a car with a refurbished battery might not start after sitting for just three days. Refurbished batteries are least reliable in such conditions.
