5V6A UPS HAT - X1209
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       Hardware description  
   
  1 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 
 
           
       
         
  2 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   

X1209 UPS HAT

    2   

Raspberry Pi 5 /4B /3B+ /3B

  
  3   Power Supply (27W USB-C or 6~18Vdc DC plug 5.5x2.1)   4   micro-SD card (≥16GB) x1, not required for eMMC version  
  5   4.2V rrechargeable lithium-ion battery          
     
 

* For reliable operation, please use a power adapter that meets the required specification: either 5V at 5A via the USB-C port, or 6-18V at 3A via the DC jack. An insufficient power supply will prevent the system from powering on and may fail 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 (For Raspberry Pi 5 only)
 

The power-on/off functionality is achieved by connecting the X1209 power button to the Pi 5's PSW through-hole via a pogo pin.. *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 UPS HAT directly into the Pi's 40-pin GPIO header.

   
   
   
   

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
   

  • Battery connector: XH2.54 2P pith2.54mm
 

  • Polarity also printed on the PCB* - Never make a wrong polarity connection.
   

 
 

 
   
   
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