How Long Can a New Car Battery Last Without Use?

1 Answers
SavannahLee
07/29/25 2:49pm
Over three months. Generally, if a car is left unused for half a month, the battery still has power, but the voltage has dropped, making it difficult to start. If the vehicle is parked for more than three months, the battery will be almost completely drained. Note that the rate of power consumption is somewhat related to the manufacturing process of the battery. Overall, a new battery can last longer, while an old battery discharges faster. Precautions: 1. Replace the battery every 3 years: Under normal circumstances, a car battery should be replaced after about 3 years of use. Most cars today are equipped with maintenance-free batteries, which have a clean appearance and are easy to inspect. These batteries have an inspection window that is normally green. If the color changes (varies by manufacturer), it indicates the battery has reached the end of its life and should be replaced promptly. 2. Pay attention to warning signals: To prevent sudden battery failure, the best approach is to regularly monitor the warning signals from the car, such as the starter not turning or turning weakly, which may prevent the engine from starting.
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