Features: Effortlessly assemble a high capacity portable charging using 5 removable 18650 cells, featuring plug and play safety and double USB outputs for fast charging. Designed for customization, this ABS/PCB battery case offer real time power monitoring via a built in LCD, easy assembly, and compatibility with batteries. Ideal for first time enthusiasts and travelers seeking power solution for outdoor adventures or daily device charging needs. Perfect for camping trips, emergencies backups, and mobile workstations – keep smartphones, tablets, and USB gadgets powered with this compact, travel energy storage systems. Engineered with impacts resistant construction and secure battery contacts, this modulars power banks set ensures long lasting performances while maintaining user safety during extended charging. Specifications: Component: ABS+PCB Size: Approx. 5.74x2.6x0.9inch(146x66x23mm) Weight: 65g Color: Black/Blue/White Package Includes: 1x Mobile Power Boxes Cover note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.