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Geekworm X306 V1.3 18650 UPS Expansion Board for Raspberry Pi Zero 2W

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  • Description
  • Manual
  • Shipping Policy
  • Product Reviews

Update History

X306 is updated from V1.1 to V1.3 on May 28th 2024. 

  1. Only compatible with Raspberry Pi Zero 2W now
  2. Removed 3 standard USB-A 2.0 ports (Users have less need for this. Can directly use OTG port on the Raspberry Pi motherboard)
  3. Removed 4-pin header for external power switch and always-on power option(Users have less need for this. Can can solder it yourself if needed)
  4. Smaller size, simplified use

Note: The Raspberry Pi, 18650 battery & heatsink is not included in the packing list.

X306 is a one cell 18650 UPS shield designed for Raspberry Pi Zero 2W.

User Manual:


  • Ideal Uninterruptible Power Supply (UPS) solution for Raspberry Pi Zero 2W
  • Max 5.1V 4000mA Power Backup for Raspberry Pi Zero 2W
  • 18650 single cell battery holder
  • Upto 1000mA charging current
  • Integrated battery reverse polarity protection circuit
  • Integrated over current protection and over voltage protection
  • Intelligent automatic charging and discharging
  • 4 blue LEDs indicate battery charging and discharging levels of 25%, 50% , 75% and 100%
  • Red & green LEDs show the status of power on/off and charging status
  • On-board push button to control power on /off (Press-ON, Hold the button pressed at least 3s -OFF)
  • Ultra-low standby power consumption of μA to maximize battery life
  • Integrated IN-to-SYS pass-through path to pass the input voltage to the system
  • Advanced system power path management avoids frequent charging and extend battery life
  • Connects to the Raspberry Pi via Pogo Pins - no wirindg & soldering required
  • Power using USB Type-C port

Input supply voltage: 5Vdc +/-5%
Input supply current: ≥3A
Charging current: 900~1050mA
Trickle charge current: 130~140mA
Predetermined charge voltage: 4.2V +/-1.5%
Output voltage: 5.1V +/-5%
Max output current: 4000mA

How to Power

  • Power Input: 5.1Vdc +/-5% , ≥3A (Power Via USB Type-C port of X306)

How to Cool
Recommend to use with Geekworm C296 aluminum heatsink for Raspberry Pi Zero 2 W. 

Packing List:


  • 1 x X306 V1.1 18650 UPS Shield
  • 4 x KM2.5 x 5mm Screws

Refer to:

Please email to us at if you have other questions.

We send orders to worldwide with tracking number.

For detail refer to Shipping Policy

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