Ultimate Battery Storage: Organize up to 150 batteries, including AA, AAA, 9V, C, D, and button cells, ensuring you always have the right battery at hand. Built-in Battery Tester: Easily check battery life to ensure your devices stay powered, so you're never caught off guard by a dead battery. Clear Easy-View Cover: Quickly access and identify your battery collection with the transparent cover, avoiding cluttered drawers. Secure & Compact Design: Heavy-duty latches keep batteries secure. Slim profile fits in drawers, cabinets, and shelves, optimizing space and accessibility. Portable & Convenient: With a sturdy fold-away handle, this organizer is perfect for home and travel, ideal for offices, boats, RVs, and workshops.