How long can a battery sit unused?

There are a number of different factors that can affect how long a battery can remain unused, including the condition of the battery and the temperature it is being left at. Generally speaking, a car battery should be ok for 1-2 months before it is worn out and will need recharging before it can start the car again. This time will be shorter if the battery is particularly old, or if the car is going to be left in cold conditions.

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