Keep your Raspberry Pi running smoothly with this dedicated UPS power supply module! DESIGNED FOR RasPi: Specifically designed for Raspberry Pi, featuring an onboard switchable lithium battery charging circuit with PM, booster circuit, and voltage/current monitoring circuit. STABLE 5V OUTPUT: Supports simultaneous charging and discharging, providing a stable 5V voltage output. Monitor battery voltage, current, power, and other parameters via the I2C interface. SPRING THIMBLE INTERFACE: Uses a spring thimble interface design, suitable for Raspberry Pi series motherboards. Onboard lithium battery charging circuit. MULTIPLE PROTECTIONS: Features multiple battery protection circuits, including overcharge and discharge protection, overcurrent protection, and short circuit protection. CHARGING INDICATOR: Designed with a charging indicator to easily monitor the battery's working status. Output Voltage: 5V Charging Power: 5V, Micro USB interface Control Interface: I2C Product Size: Approx. 30 x 65mm / 1.18 x 2.56in Hole Diameter: Approx. 2.5mm / 1.10in Single Lithium Ion Battery Specification: 21700/5000mAh (battery included) Package Includes: 1 x UPS Power Supply Module, 2 x Battery, 1 x Screw Kit, 1 x Shell