[Double-Sided & High-Capacity]The Vecefy battery organizer features an innovative dual-sided design that maximizes space efficiency, capable of storing 262+ battery types while incorporating a professional BT-168 battery tester for smart power management. [Multi-Size Battery Slots]This high-capacity battery organizer features smart compartments for various battery types. Side A: 6D, 8C, 8*9V, 46*2A, 42*3A, 45*button cells, 1*BT-168 tester. Side B: 12*4A, 10*3A, 12*2A, 6*23A, 9*4LR44, 6CR3, 4CR123A, 6*18650, 42*button cells. Each battery has its dedicated slot for neat organization and quick access. [Built-in Battery Tester BT-168]Our battery storage case features a professional BT-168 tester that quickly checks battery levels and automatically categorizes them. Easily identify full-charge, low-charge and replacement-needed batteries - say goodbye to messy battery management and find the right battery instantly. [Excellent Design]Featuring dual-sided storage and one-hand portability, this battery case combines functionality with sleek aesthetics. The transparent lid, rounded edges, built-in sponge insulation and robust structure ensure optimal performance for storage, transportation and daily use. [Premium Material]Crafted from fireproof PPC material with high-density sponge insulation, our battery storage box delivers exceptional durability and safety. The reinforced structure easily supports fully-loaded batteries, while the integrated handle provides secure wall-mount or storage unit hanging.PlainABS