Features: This 4 section 21700 power case set features easy assembly design for quick and easy installation without tools, making it perfect for users with limited DIYer skills and emphasizing its structure for easy setup. Constructed from ABS, it offer excellent impacts resistance and durability, providing robust protections for internal batteries to extend their lifespans and withstand daily wear. Ideal for commuters, travelers, and outdoor enthusiasts who need power solution, catering to those seeking user friendly and secure charging option. Perfect for scenarios like hiking, camping, or daily commutes, it delivers stable power with wide compatibility for various 21700 battery cells, ensuring consistent performances during travel or outdoor activities. With built in circuit protections against overcharging, over discharging, and short circuits, this light weight and portable set ensures safe usage while being compact enough for easy storage in bags or pockets. Specifications: Component: PVC+Aluminum Alloy Type C input: 5V/3A 9V/2A 12V/1.5A Battery capacity: 20000mAh, 4Pcs 21700 batteries (battery not included) Power: 22.5W Color:Gray,Black,Silver Size:Approx.98.5mm/3.88''x50mm/1.97''x46mm/1.81'' Package Includes: 1Set Battery Chargers Case note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.