1. Standard size for Raspberry PiHAT, compatible with Raspberry Pi 4B, 3B+, 3B, 2B, 3A+, and A+ development boards (not compatible with for Raspberry Pi 5). 2. Cascading design saves space, simultaneously powering the for Raspberry Pi and expansion boards without affecting GPIO expansion. 3. Supports fast charging technology up to 2A for quick battery charging. 4. Can charge and power the for Raspberry Pi simultaneously. 5. Features 4 LED power indicators; 6. Removable battery (battery not included), users can choose a larger capacity lithium battery pack (Note: voltage must be 3.7V). 7. Equipped with safety protection circuitry to prevent overcharging and over-discharging. 8. Retains the for Raspberry Pi GPIO interface, allowing you to still use various expansion boards; 9. It is a MiniUPs power supply; 5V/1.5A output, 5V/2A input. Color: Random Color Material: PCB Package Contents: 1*Extension Board 1 set of installation accessories (random color)