SupTronics Technologies


		POE-powered UPS - X1207
		Getting Started - hardware

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Hardware description

Raspberry Pi GPIO used

PIN#	GPIO	Functions
3	GPIO2	I2C-SDA, battery fuel-gauge systems -reading battery voltage and percentage
5	GPIO3	I2C-SCL, battery fuel-gauge systems -reading battery voltage and percentage
31	GPIO6	AC power loss & power adapter failture detection, Low-power supply failed, High-power supply OK
36	GPIO16	Control battery charging, High-charging disabled, Low-charging enabled

*The UPS connects to the Pi GPIO via pogo pins, If the I2C address (0x36) is not detected or failed to read AC power state or failed to control charging, please ensure to clear the leads of the pins used on the GPIO header from the bottom of the Raspberry Pi PCB and then reinstall it.

Battery voltage level indicators

Battery voltage range (V)	D1	D2	D3	D4	Remark
3.87-4.2	ON	ON	ON	ON	discharging levels of 100%
3.7-3.87	ON	ON	ON	OFF	discharging levels of 75%
3.55-3.7	ON	ON	OFF	OFF	discharging levels of 50%
3.4-3.55	ON	OFF	OFF	OFF	discharging levels of 25%
Below 3.4	OFF	OFF	OFF	OFF	low battery

required hardware

	1		X1207 POE-powered UPS HAT		2		Raspberry Pi 5
	3		Power Supply USB-C 5V 5A		4		micro-SD card (≥16GB) x1

	5		21700 4.2V rechargeable lithium-ion battery x1

	* To ensure reliable operation, you must use a power source that meets the minimum specification: either an 802.3at (PoE+) switch or a 5V/5A USB-C power adapter. An insufficient power supply will prevent the system from starting and may result in a failure to charge the battery.

hardware installation

Step 1

	Insert the M2.5×5mm screw upward through the base mounting hole, then thread the M2.5×13.5mm female-female spacer onto the screw until finger-tight.

Step 2

Uses the pogo pin to connect the X1207 button to the Pi 5's PSW through-hole, providing the same power-on/off functionality. Incompatible with Pi 4B/3B+/3B.
	Position the pogo pin into the designated location on the PCB.
	Insert the lead into the through hole, ensuring it is straight and properly seated.

Step 3

	Plugs the HAT directly into the Pi5's GPIO and PoE pin headers.

Step 4

	Make slight adjustments to the pogo pin to align it with the through hole and ensure insertion.

Step 5

	Secure the UPS HAT to the spacers with four M2.5x5mm screws.

Step 6

	Compatible with unprotected 21700 batteries only (Max. length: 70.3 mm).
	Double-check the polarity of the battery's connector to ensure that "+" is connected to "+" and "-" is connected to "-".
	Polarity also printed on the PCB* - Never make a wrong polarity connection.