DFRobot Raspberry Pi UPS HAT is an uninterruptable power supply shield for Raspberry Pi. It can provide steady power source to Raspberry Pi for an extended period of time when the system is powered-off, by which to avoid system damage and assure safe shut down. In addition, the product could be used to supply stable power for some applications requiring mobility such as, Raspberry Pi Camera, Tablet PC, Field data collection system.

A MAX17043 fuel gauge is adopted in this product for accurate power detection. Beside, we also employs an on-board microcontroller (MCU) for data processing. In this way, Raspberry Pi board is able to get information of power capacity and battery voltage directly via I2C communication. 5 on-board LEDs for the shield could show the status of the battery capacity visually without programming.

We 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 keep low heating temperature even under continuous high load operation of Raspberry Pi.

Notes :

3.7V Lithium Battery is not included in the package due to transportation constraints
Please use 3.7V Lithium Battery that meets standard specification
Please note that there would be a certain degree of heating in the power source area of the product during operation, you can never be too careful in use.

FEATURES :

Standard Raspberry Pi extension interface, compatible with other expansion boards
Support 2A maximum current output, suitable for more Raspberry Pi applications
Auto switching of charge/recharge path, designed to against power-down
On-board 5 LEDs for showing the batteries’ 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 adapter with power of 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
Main-Board: Raspberry Pi B/B+/2B/3B/3B+ and subsequent version
Communication Interface: I2C
Dimension: 65mmx56mm/2.56”x2.20”
Mounting Hole Size: 58mmx49mm/2.28”x1.93”
Operating Temperature: -40℃~85℃

IMG2: Raspberry Pi UPS HAT Bottom View

IMG3: Raspberry Pi UPS HAT Top View

Serial Number	Function Description	Status Description
1	USB charge interface	Charge by 5V DC
2	Charging Indicator	ON : in charging Blinking : battery is not detected OFF : uncharged
3	Function Keys	Query Electric Quantity
4	Electric Quantity Indication	Indicating Present Power Status
5	Li-ion Battery Solder Point	Solder Li-on Battery
6	Raspberry Pi 40Pin Socket	Connect Raspberry Pi
7	Button	When in uncharged state, press the button once, and the indicator will show the current battery power for 10 seconds.