Features: 18650 batteries are not included in the package, you need to purchase separately. Can only use the 18650 battery of which positive electrode is flat top. Unlocks the convenience of detachable 18650 Battery Holder with LCD display, quick wireless charging capabilities, and easy battery maintenance. This DIY case allows for simple battery replacement without welding, offering a larger capacity to solve your charging need. For all users in need of reliable power solution, this storage box is equipped with MicroUSB/Type C/USB1/USB2/USB3/USB 4 charging interfaces. Whether camping outdoors or traveling, this innovative 28x18650 Battery Storage Box with camping light ensures you're prepareds with emergencys. Specifications: Material:Plastic Color:Black,White; Size:Approx.176x84x83mm/6.93x3.31x3.27in Number of batteries: 28x18650 batteries Interfaces:MicroUSB/Type C/USB1/USB2/USB3/USB 4; Option Type:Black 10W Powers Bank Case,Black 22.5W Fast Charge Powers Bank Case,Black 22.5W+15W Fast Charge Powers Bank Case,White 10W Powers Bank Case,White 22.5W Fast Charge Powers Bank Case,White 22.5W+15W Fast Charge Powers Bank Case, 10W Powers Bank Case Most Power:5V2A 22.5W Fast Charge Powers Bank Case Power: 5V3A 4.5V5A 5V4.5A 9V2A 12V1.5A 22.5W+15W Fast Charge Powers Bank Case Power:5V3A 4.5V5A 5V4.5A 9V2A 12V1.5A, Wireless Charging:15W Package Includes: 1xPowers Bank Case note: Please allow 1-2cm errors due to manual measurement,please make sure that you donot mind befores you order. Due to the differences between different monitors, the picture may not reflect the actual item color.