Raspberry Pi 18650 UPS(Max 5.1V 6A), X728 V2.3 Power Mangement Board with Auto Power On & Safe Shutdown & Buzzer for Pi 4/3B+/3B
ID: 55263

Raspberry Pi 18650 UPS(Max 5.1V 6A), X728 V2.3 Power Mangement Board with Auto Power On & Safe Shutdown & Buzzer for Pi 4/3B+/3B

4.9 (7 votes) | 42 orders
Price: US $45.58 - 136.88 / piece
Discount Price:
US $ 36.46 - 109.50 / piece


The X728 is an advanced uninterruptible power supply expansion board for all current models of the Raspberry Pi using a 40 pin header.
It provides 5.1V 8000mA Power Backupfor even the most demanding Raspberry Pi set ups, intelligent and safe power management, safe shutdown, auto power-on, full poweroff from software, battery reverse polarity protection circuit, and a real- time clock.
The X728 reserves the 40-pin header that can be stacked with other Raspberry Pi accessory boards for enhanced applications. The X728 can also be used with the (2.5" HDD/SSD Shield) and  /  (MSATA/M.2 NGFF SSD shield) for safe data backup.

[Updateion History]

X728 V2.2, upated on July 7th, 2022:
  • Adds Battery Reverse Polarity Protection circuit & LED indiciators on v2.2
X728 V2.1, upated on Sept., 27th, 2021:
  • New add a buzzer controled by CPIO20
  • DC jack is changed from DC5525 to DC5521
X728 V2.0, updated on Aug., 2nd, 2021:
  • Improve the power path function, the battery will only charge and not discharge when connected to the PSU.
  • You can choose to charge when boot up by short "CHG EN" and stop charging at shutdown.
  • Use ultra-low voltage MCU.
  • Increase battery overcharge, overdischarge protection circuit, added power input surge protection circuit.
  • Added power input connector, which can be used with X715 to achieve 6~60V wide voltage input.
  • V2.0 PCB Size update to 87x63.5mm, the V1.3 PCB size is 85x63.5mm.
  • The battery holder "+" and"-" mark direction has changed compare with X728 V1.3. Please pay attention and follow the directions to insert the batteries.
X728 V1.3, updated on February, 2021:
  • V1.3 removes the ASD harware function and adds power surge protection function, but we new add the software shutdown python script when battery is low voltage, please rerfer to X728-Software
  • The charging power indicator (LED1-LED4) is relatively brighter than V1.2.

[User Manual]


  • Raspberry Pi 1 Model B+/ 2 Model B / 3 Model B / 3 Model B+ / 3 Model A+ / 4 Model B


  • Raspbian Stretch

  • Safe shutdown function tested for Raspbian, other operating systems to be tested and advise


  • Power supply via Type-C socket : 5Vdc ±5%, ≥3A, Via DC power jack : 5Vdc ±5%, ≥4A

  • UPS output : 5.1V ±5% Max 6A

  • UPS charging current: 2.3~3.2A

  • Terminal Battery Voltage : 4.24V

  • Recharge Threshold : 4.1V

Do not apply power to your Raspberry Pi via the Micro USB socket or Type-C socket.
Do not use 18650 battery with built-in protection circuit

[Packing List]

Bundle 1:
  • 1 x X728 Expansion Board

  • 8 x Screw M2.5 *5mm

  • 4 x Spacer M/F M2.5 *20mm

  • 4 x Spacer F/F M2.5 *20mm

  • 2 x Jumper link Pitch 2.54mm

Bundle 2:
  • 1 x X728-A1cooling fan board

  • 1 x Screw pack

Bundle 3:
  • Bundle 1

  • 1 x X728-A2 Battery Holder

  • 1 x Screw pack

Bundle 4:
  • 1 x X728 Expansion Board

  • 1 x Heatsink with Cooling Fan(With 4x Copper pillar m2.5*14+4)

  • 1 x Power adapter -EU Plug

Bundle 5
  • 1 x X728 Expansion Board

  • 1 x Heatsink with Cooling Fan(Screw Pack: 4x Copper pillar m2.5*14+4)

  • 1 x Power adapter -US Plug


  • Smart and powerful Uninterruptible Power Supply (UPS)

  • Provides continuous operations for up to 10~30hours (depending on battery type and qty used)

  • Max 5.1V 6000mA Power Backup for even the most demanding RPi set ups

  • Can work with X728-A2 stackable 2-cell battery holder to increase battery capacity

  • Supports 3000mA fast battery charging

  • Integrated over current protection and over voltage protection

  • Integrated Maxim's fuel-gauge systems (Reading battery voltage and percentage via i2c)

  • Integrated 10-A fully-integrated synchronous boost converter

  • Intelligent automatic charging and discharging

  • On-board 4 green LEDs indicate battery charging and discharging levels of 25%, 50% , 75% and 100%

  • Intelligent and safe power management

  • Equipped with momentary button for easy power control

  • Press the button to turn on

  • Press the button and hold for 1~2seconds to reboot

  • Press the button and hold for 3~7seconds to implement safe shutdown

  • Press the button and hold for >8seconds to force shutdown

  • Supports safe shutdown and full poweroff through software

  • On-board blue LED shows the status of power on, reboot and shutdown

  • On-board pin header allows to select auto power-on when power supplied

  • Ultra-low standby power consumption to maximize battery life

  • Operate in both charge mode and boost mode to allow full system management and battery power management

  • Integrated IN-to-SYS pass-through path to pass the input voltage to the system

  • Advanced system power-path management avoids batteries frequent charging and discharging

  • Advanced system power-path management allows 3A fast charging and powering Raspberry Pi at the same time

  • Integrated Hardware DS1307 Real Time Clock (RTC) with Battery Back-Up

  • Keeps track of the time while the Raspberry Pi is switched off

  • Allows the Raspberry Pi to retrieve the current date and time when it is switched back on

  • Uses the 18650 battery to maintain the date and time - no additional battery required

  • Powers the Raspberry Pi via the 40-pin header - no additional cabling required

  • On-board DC power jack (5.5*2.5mm) and Type-C socket convenient for power input

  • On-board PH2.0 connector allows to connect external power switch and DIY your perfect case

  • On-board XH2.54 power output connector allows to power other devices

  • Reserves the 40-pin header that can be stacked with other Raspberry Pi accessory board


  • X728-A1 Optional Raspberry Pi cooling fan

  • Completely solve the overheating problem of your Raspberry Pi

  • Efficient drop temp of your Raspberry Pi by using the X728-A1

  • Stackable design allows you to connect both X728 and X728-A1on your Raspberry Pi

  • On-board XH2.54 power output connectors allow to power other devices

  • Reserves the 40-pin header that can be stacked with other Raspberry Pi accessory boards


  • X728-A2 Optional 18650 2-Cell battery holder

  • Stackable 18650 two cells lithium Ion holder

  • Ideal solution to increase battery capacity

  • Integrated battery protection circuit

  • Brand Name: Geekworm
  • Accessory Type: Extension Board
  • Origin: Mainland China
  • Compatible With: Raspberry Pi 4B/ 3B+/ 3B/ 2B


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