Pisugar 3 Plus is the third generation of PiSugar Raspberry Pi battery power supply series, making Raspberry Pi a portable device. With the on-board RTC, the Raspberry Pi can get the correct time whether its powered or networked. Features Full functions UPS Anti-Mistaken Touch Switch: Effectively avoid shutdown caused by accidental touch OTA firmware upgrade TypeC/mircroUSB dual charging interface Designed for Raspberry Pi 3B/3B+/4B Back contact, easy to install, does not occupy GPIO I2C function control, address can be set Custom button Soft shutdown (hardware notification software shutdown) WebUISupport multiple function one-key setting Software watchdog: This function can restarts the Raspberry Pi system when the Raspberry Pi system crashes. On-board RTCRTC has a write protection function in order to prevent data fluctuations caused by misoperation or system instability. Hardware battery protection: PiSugar3 provides hardware charging protection function, which effectively improves battery cycle life. Electrical Specifications Input: 5V-3Amax Output: 5V-3Amax Battery capacity: 5000mah Communication interface: I2C interface 0x57/0x68 address (can be set) Package contains: 1battery module 4 x screws More details can be found on Github.