DFRobot Raspberry Pi UPS HAT is an uninterruptable power supply shield for the Raspberry Pi. With the addition of your own 3.7V Lithium battery, it can provide a steady 2A power source to your Raspberry Pi for an extended period of time when the system is powered off, to avoid system damage and assure safe shut down. In addition, the product can be used to supply stable power for some applications requiring mobility such as a Raspberry Pi camera project. A MAX17043 fuel gauge is used on this board for accurate power detection. DFRobot also employs an onboard microcontroller (MCU) for data processing. This allows the Raspberry Pi board to receive information on power capacity and battery voltage directly via I2C communication. Five onboard LEDs for the shield can show the status of the battery capacity visually without programming. DFRobot adopted an excellent power management solution in this Raspberry Pi UPS HAT. Over 90% power conversion efficiency and non-diode design make the shield able to remain cool even under continuous high load operation of the Raspberry Pi. Note: 3.7V lithium battery NOT included Notes 3.7V Lithium Battery is not included in the package Please use a 3.7V Lithium Battery that meets the specification below Please note that there will be a certain degree of heating in the power source area of the product during operation Features Standard Raspberry Pi extension interface, compatible with other expansion boards Support 2A maximum current output, suitable for most Raspberry Pi applications Auto-switching of charge/recharge path, designed to against power-down On-board 5 LEDs for showing the battery status On-board Maxim fuel gauge IC Support reading battery information via I2C communication Lithium battery charge/discharge protection and over-heating protection Anti-backflow mainboard power source Specification Supply Voltage: 4.5~5.5V Supply Current: (recommend using an adapter 2A and above) Power Supply Interface: Micro-USB Maximum Charge Current: 1.6A Battery Interface: PH2.0-2P or solderable contact Battery: 3.7 Lithium Battery Output Voltage: 5V Maximum Output Current: 2A Communication Interface: I2C Dimension: 65mmx56mm/2.56×2.20 Mounting Hole Size: 58mmx49mm/2.28×1.93 Operating Temperature: -40~85 Documents Product wiki Shipping List Raspberry Pi UPS HAT x1 Copper Columns and Screws x4 sets Note: 3.7V lithium battery NOT included