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. Keep your devices running smooth with this detachable battery case featuring quick wireless charging and LCD display. This DIY kit allows for easy battery maintenance and replacement without the need for welding, making it convenient and user friendly. Suitable for individuals with charging need, this storage box caters to all types of users in various situations. Whether you're camping outdoors or traveling, this detachable case ensures you have reliable powers source for your devices. Easy maintenance with this plastic 18650 Battery Storage Box, offering solution for keepings your devices up. 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.