Depends on what you mean.Storing a battery at a lower temperature will help it keep "fresh" longer. There will be more of the original capacity left in the battery when you begin to use it.If you store it warm, or at high temperature, more of the capacity will "leak" out before you start to use it.Do note that this is a fairly slow process. You won't notice any difference in remaining capacity over a week or two.While in use, a cold battery will have less capacity than a slightly warm one.