At what SOH level should a car battery be replaced?
2 Answers
It should be replaced when it falls below 60%, especially for automatic transmission vehicles. Here are some relevant points to consider when replacing a battery: Prevent contact with metal during battery replacement: Whether removing or installing, be careful not to let the positive battery terminal touch any metal when tightening. Pay attention to battery model and quality when replacing: When purchasing a new battery, ensure it matches the original battery model for proper functionality. It's also recommended to choose reputable brands for guaranteed quality. Check the manufacturing date when replacing the battery: Carefully examine the battery's production date. Generally, batteries manufactured within the last 3 months are acceptable, while those older than 6 months may affect service life.
Having driven for many years, I deeply understand the importance of battery health. Generally speaking, when the SOH (State of Health) drops below 80%, it's time to seriously consider a replacement. This is because internal battery aging leads to severe capacity degradation, which can easily cause starting difficulties, especially in cold weather or during long-distance driving. I recommend using a simple OBD diagnostic tool to regularly check the SOH, as this data is usually available in the vehicle's self-check system. If you notice it dropping to around 70%, the risk becomes even higher, with the potential for sudden breakdowns. Don't try to save money by patching it up—replacing the battery outright is more cost-effective. Last time I delayed replacing mine, I ended up stranded on the road unable to start, which not only disrupted my trip but also cost me more in towing fees. For routine maintenance, keeping the battery clean and avoiding excessive discharge can help extend its lifespan. Remember, safety comes first—acting promptly saves both hassle and trouble.
