Will the car battery run out if left unused for a month?

[MilaAnn]

If a car is left unused for a month, the battery may not run out. A car battery loses about 1% of its charge per day. If it remains connected to the car and is not removed, the car can maintain a minimal current. Generally, the maximum time a car can be left unused is around 20-30 days, but this still depends on the specific situation. If the battery is left unused for more than a month, it is recommended to disconnect the negative terminal of the battery first. The lifespan of the battery is also related to the owner's usual habits. When the battery charge is less than half, i.e., the voltage is below 13.4V, the car may be difficult to start, and it should be charged promptly.