How Long Can a Car Battery Sit Without Going Dead?

[DiAmir]

Car batteries will typically go dead if left unused for more than three months. Generally, if a car is not driven for half a month, the battery may still have some charge, but the voltage will drop, making it difficult to start. If the vehicle is parked for more than three months, the battery will almost completely discharge. Note that the rate of discharge depends partly on the battery's manufacturing quality. In general, new batteries hold their charge longer, while older ones discharge more quickly. Below are some key points about car batteries: 1. Replace Every 3 Years: Under normal circumstances, a car battery should be replaced after about three years of use. Most modern cars come equipped with maintenance-free batteries, which have a clean appearance and an easy-to-check observation window. A green indicator means the battery is in good condition; any other color indicates it's time for a replacement. 2. Watch for Warning Signs: To prevent sudden battery failure, the best practice is to pay attention to warning signals from your car, such as a weak or non-responsive starter, which may prevent the engine from starting.