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. Made of high quality material, it is wear resistant and durable. If your device has quick charging function, it could up to 22.5W; Support Support PD3.0/QC3.0/QC4.0+/QC4.0/PE2.0/PE1.1/SFCP quick charging protocol; Note:Do not reverse the positive and negative poles; Specifications: Material:Plastic Color:Black,White;(Optional) Number of batteries: 6x18650 batteries Option Type:10W Black Power Bank Case,22.5W Black Quick Charging Power Bank Case,22.5W/15W Black Wireless Charging Power Bank Case,10W White Power Bank Case,22.5W White Quick Charging Power Bank Case,22.5W/15W White Wireless Charging Power Bank Case, Package Includes: 1x Power Bank Case (Battery not include) note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.