Experience the convenience of Battery Daddy Smart, the ultimate battery storage system! This nifty double-sided design has room for up to 150 batteries, each safely secured in its own customizable slot. Its clear, easy-view cover makes sure you can always see your inventory, while secure, heavy-duty latches keep your batteries in place. Plus, its compact design and fold-away handle let you easily tuck it away anywhere--in a cabinet, drawer, shelf, boat, RV or workshop. And to top it off, it comes with a built-in battery tester, so you won't be left in the dark! Get power when you need it with Battery Daddy Smart!