Exactly. Have two boxes of not quite so many (Home Depot seems to have good deals on mega packs). Mark one box "Now" and the other "Later" (if you have room, store it in the fridge). Use the batteries in the "Now" box as needed. Once a year move the batteries from the "Later" box into the "Now" box and refill the "Later" box with a new purchase. Not only will you keep your batteries fresh, you'll find out how many batteries you go through in a year.