Perfectly Compatible: Designed for 18V models such as BL1850, BL1840, BL1830, etc. (batteries not included). A secure locking slot holds the battery firmly in place and prevents it from sliding, even when installed at any angle (upside down/sideways), perfect for uneven environments like construction vehicles or garages. High-Strength ABS Plastic: Made from premium material. Resistant to daily wear and tear, dust, moisture, and temperature changes. Lightweight yet extremely durable for long-lasting use. Easy 2-Minute Installation: Screws included, no complicated tools required. Just 3 simple steps: mark, drill, and fasten. Can be installed anywhere easily accessible: garage walls, workbenches, work carts, high shelves, etc. Space-Saving and Battery-Protecting: Removes batteries from desks/floors, freeing up workspace. Effectively prevents dust, scratches, and impacts, extending battery life. Organized design makes inventory management easy and convenient. Flexible Placement: Accommodates up to 5 batteries at a time (1 battery per slot), allowing you to store all your power sources centrally or distribute them across multiple locations. Whether you have a small home garage or a large professional studio, this multifunctional battery storage box can perfectly adapt to your layout.