Duracell and Rayovac recommend storing batteries at normal room temperature, as of 2015. Both manufacturers offer different types of batteries, including hearing aid batteries, camera batteries and rechargeable batteries.
Battery performance declines when it is subjected to extreme temperature variances, according to Duracell.com. The website also states that storing batteries in a refrigerator or freezer does not extend battery life. Additionally, Rayovac.com states that cold batteries perform at a lower rate than room-temperature batteries. For example, the website proclaims that flashlights kept in vehicles during winter months only produce faint light beams and the cold temperatures shorten the life span of the batteries.