Under normal circumstances can be stored for 1-2 years,
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It can be stored in a dry and cool place, can be wrapped in wax paper or plastic wrap, and there is a storage date on the battery, and there is a year and month that the battery generally has a shelf life of 3 years. But not three years of constant electricity. But the new battery decay is slow, wait until after 3 years, it may decay faster, until there is no electricity.