Designed for enthusiasts and DIYers who their own power solutions, this unit requires flat 18650 batteries and supports a minimum capacity of 10,000mAh for performance. Key benefits Flexible power solution: Uses flat 18650 cells and supports at least 10,000mAh capacity to deliver reliable energy for your projects. Versatile outputs and protection: Double USB outputs, a TypeC input/output, and a strong LED light, all housed in a robust shell to provide stable performance and prevent damage to the mainboard from incorrect battery installation. Safe for outdoor and daily use: Builtin protections against over voltage, over current, and short circuits, making it a dependable companion for charging your mobile devices. Efficient, fast charging: Solder 8cell 18650 design aimed at fast charging and compatibility with multiple protocols, including PD3.0, ensuring efficient power delivery to your devices. Use scenarios Outdoor activities: camp trips or hikes where you need to charge phones, GPS devices, or portable lights via the USB outputs. Daily use on the go: use at work, travel, or commuting to keep devices powered without frequent outlet access. Emergency backup: reliable energy source during power outages or other unexpected situations.