Features: Not solder design enables easy assembly of 5x21700 lithium batteries, delivering massive 15W wireless charging capacity and double USB outputs (5V/3A) for multi device power solution. Features modulars construction with shockproof ABS casing, real time digital power display, and universally compatibility across devices for flexible charging configurations. Ideal for electronics hobbyists, outdoor enthusiasts, and emergencies preparedness users seeking customizable power with professional safety features. Perfect for extended camping trips, mobile workstations, or emergencies backup scenarios requiring charging capabilities without fixed power sources. Combines plug and play connectivity with drop protections, offering expandable battery capacity through swappable 21700 cells while maintaining compact portability. Specifications: Component: ABS+PCB Color: Black/Green/White/Blue Size: Approx. 6.38x2.72x1.06inch(162x69x27mm) Weight: 110g Package Includes: 1x Battery Case 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.