The Battery Organizer Storage Case is a great gadget to eliminate your battery clutter. It holds 93 various sizes of batteries neatly and organized! The battery storage case also includes a battery tester which can be easily removed. Store the battery organizer flat in a drawer or closet or mount it on the wall. It holds up to 93 different size batteries: 45 AA, 25 AAA, 4 9 volt, 8 C, 6 D and 5 flat batteries.