This 2-in-1 Battery Tester and Organizer has a rack that can hold up to 72 batteries, plus a tester so you won't throw away perfectly good ones. Perfect for any place you store batteries! It's compact enough for a drawer, or it can be hung on a wall, with a hole for a screw on each end. Each size battery has its own place on the rack, so a quick glance tells you what you have. To test batteries, place them in the built-in tester and the colored lights will indicate new, slightly used or out of juice.