UPS+NVMe HAT - X1208
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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   

X1208 UPS HAT

    2   

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

  
  3   Power Supply USB-C 5V 5A   4   micro-SD card (≥16GB) x1  
  5   21700 4.2V rechargeable lithium-ion battery  x1          
     
 

* For reliable operation, please use a power adapter that meets the required specification: 5V at 5A via the USB-C port. 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
   

  • Confirm the FFC cable orientation

 “PIP” – Must connect to the X1208

 “PI5” – Must connect to the Pi5

 

  • Pull out the actuator then plug the FFC cable and push the actuator to hold the cable inside.

   
   
   

Step 3
   
 

  • 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 4
 

  • Plugs the UPS HAT directly into the Pi's 40-pin GPIO header.

 
  • Pass the FPC through the PCB slot.
 

  • Open the FPC actuator completely, and insert it in the interior of the insertion entrance surely when you insert FFC.

 

Step 5
   

  • Make slight adjustments to the pogo pin to align it with the through hole and ensure insertion.
   
 
   
   
Step 6
   
 

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

   
   
   
   
 
Step 7
 
 

  • Insert M.2 SSD into M.2 slot then slide the SSD drive into the M.2 slot at 30 degrees while pushing it gently till it fits into the slot.
 

  • Press the M.2 SSD drive till it sits on the riser screw then lock it in place using the M2 mounting screw.

   
   
   
 
Step 8
 

  • 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.

 
 

 
   
   
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