Support 5-12V multi-file output, flexible to adapt to different equipment needs. No welding, easy to assemble, suitable for DIY enthusiasts easy to operate. Built-in 8 18650 high-capacity batteries, providing long-lasting battery life. Equipped with high efficiency voltage regulator circuit to ensure stable output and protect the connected equipment. Built-in multiple protection functions to ensure the safety and stability of the use process. Output power: 22.5W. USB output: 5V/3A, 9V/2A, 12V/1.5A (support 5V side charging and discharging). DC1 + DC2 output: 5V/6V/7V/8V/9V/10/11V/12V (3A-1.5A) 18W. Type-C output: 5V/3A, 9V/2A,12V/1.5A (multiple simultaneous output only 5V) Type-C input: 5V/3A,9V/2A,12V/1.5A. Battery requirements: flat head without protection plate 18650 battery, internal resistance within 40 mOhm, discharge 1C or more built-in. Input over-voltage, under-voltage protection. Integrated output over-current, over-voltage, short-circuit protection Self-contained battery overcharge, overdischarge, overcurrent protection. Built-in IC over-temperature protection DC function operation instructions: 1. Long press the button to enter DC mode (there is an eye-catching "DC" icon lit up in the center of the screen). 2. Default output starts from 5V, DC1 and DC2 are connected in parallel. 3. Click the power button incremental voltage, should not be too fast because of double-click (quickly press two) to close the output 4. Voltage display order: 5V-6V-7V-8V-9V-10V-11V-12V-12V cycle output 5. DC mode is continuous output, not automatic sleep, to exit, please double-click the button or long press the button to switch to USB mode. 6. If you start DC mode after fast charging output, you need to wait 30 seconds for DC boost to take effect. 7. If you want to supply power to devices larger than 12W for a long period of time, it