Features: 100% brand new and high quality DIY Powerbank: Large capacity,3x 18650 batteries (batteries not included). Dual USB powerbank, two devices can be charged at same time.Most usb cable can charge the powerbank. Easy to Use: Compact and lightweight design for easy carrying; Easy to install and uninstall; Convenient take and use. Intelligent 18650 Battery Charger: Compatible with 18650 Flat head lithium battery. Each battery slot is individual charging and detection. It automatically terminates charging when the batteries are full charged.(NOTE: Please notice the positive and negative poles) Plug and Play, power output using the USB port, plug the data cable to achieve portable, ready to charge. You need to use brand new batteries. Old batteries and damaged batteries will cause failure to work. Package Includes: 1 Set Battery Case Specifications: Material:ABS Color:White/Black/Blue/Green Dual USB Output: 5V/2.4A (MAX) Input: 5V/2.1A Input Interface: Type-C+Micro port (Does not Support PD) Size:Approx. 95x69x22mm/ 3.74x2.71x0.86 inches note: 1.Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.