As a relatively new thing, battery repair is unknown to many and only half understood by others. So some say a battery can never be repaired, arguing that if it could, battery factories would have gone out of business; while others say a battery can be repaired and that their equipment or solution can guarantee a repaired battery for more than three years. Both views are extreme and overgeneralized. So can an electric vehicle battery be repaired? Below, battery experts explain.

Yes, it can be repaired, but only within a certain scope. Batteries with shed active material from the plates, shown by a very black and cloudy liquid drawn from the battery, short circuits, or broken cells cannot be repaired. But batteries sulfated by overcharging, over-discharging, or undercharging can be clearly restored. Whether repair has real value is best analyzed from the main causes of battery failure:

Anyone who rides often knows that overcharging, undercharging, and over-discharging are common occurrences, and all of these cause the battery to lose water and sulfate. Industry insiders in repair and sales also know that an electric vehicle cannot go far because the battery pack is unbalanced. About 95% of battery failures are caused by sulfation, and these can be repaired and reused.

So can an electric vehicle battery be repaired? From the analysis above we can see that its economic value and social benefits are both great, and it is of major significance in reducing the pollution caused by used batteries.