Realtime I2C battery monitoring: uses I2C bus communication to continuously monitor battery voltage, current, power and remaining capacity, with warning indicators to quickly verify the battery is connected correctly. Safe operation and power management: includes an onboard battery protection circuit that prevents overcharging, discharging, overcurrent and short circuits, ensuring stable and safe operation. The onboard MCU handles poweron detection and startup functions. Compatibility and interface design: adopts a pin interface design suitable for Raspberry Pi boards, including Raspberry Pi 3, 3B+, and 4B; supports dynamic path management for a more stable power supply. Target audience and use cases: designed for enthusiasts seeking a stable power solution for their projects. Practical applications: Raspberry Pi projects requiring reliable, realtime battery monitoring and safe startup, such as portable Pi dashboards or remote sensors. Batterypowered robotics or automation setups where protection against overcharge, overdischarge and short circuits is important. DIY projects that benefit from clear battery status indicators and a stable power supply for continuous operation.