Allonis sells a Uniteruptible Power Supply (UPS) that is integrated into the myServer 6 Raspberry PI controllers (Pi4 and 5)

With that, if the power is disconnected, the UPS will continue keeping the Raspberry Pi up and running until myServer's automation rules gracefully shuts it down.

By default, the UPS is configured to auto boot when power is applied (after a 3 second delay to help ensure power line stability).

Also by default, the UPS is configured to charge it's backup batteries when power line is available.

The myServer driver will track the UPS's backup battery state of charge.  You will notice that the voltage will normally vary from 90% to 101% as it charges itself as the need exists.

You can configure the Automation Rule of when myServer will shut itself down gracefully.  You can also optionally add rules that provide indication that the power is down (or back up again).  This could be a Toast message that all clients see, or a blinking light, or an audio clip that gets played (depends on how you want to be notified, and by what means you like and by what hardware you have available that is accessible via myServer).

 

UPS Product Description

The X728 is an advanced uninterruptible power supply expansion board for all current models of the Raspberry Pi (Raspberry Pi 4B/3B+/2B/B+) using a 40 pin header.

It provides DC 5.1V Max 6000mA Power Backup for even the most demanding Raspberry Pi set UPS, intelligent and safe power management, safe shutdown, auto power-on, full poweroff from software, battery capacity reading, low battery automatic shutdown, battery reverse polarity protection circuit and a real- time clock, and buzzer alarm.

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 X825/X828/X829 (2.5" HDD/SSD Shield) and X857/X862/X872 (MSATA/M.2 SSD shield) for safe data backup.

[For Use With]

  • all current models of the Raspberry Pi
  • Raspberry Pi 5
  • Raspberry Pi 4 Model B
  • Raspberry Pi 3 Model B+
  • Raspberry Pi 3 Model B

[Operating System]

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

[How to Power]

Power via X728, do not power via Raspberry Pi!!!

  • Via Type-C socket of X728 : 5Vdc ±5%, ≥3A (Recommend to use Geekworm UL listed 5V 4A Type-C power adapter (ASIN:B09J856PND).)
  • Via DC power jack of X728 : 5Vdc ±5%, ≥4A

[Cooling Solution]

  • Add X728-A1 cooling fan board(ASIN: B08B5TQH6W) above Raspberry Pi for cooling
  • Use embedded aluminum alloy heatsink P165-A/P165-B for passive cooling

[Key Features]

  • Smart and powerful Uninterruptible Power Supply (UPS)
  • Provides continuous operations for up to 10~30hours (depending on battery type and qty used)
  • DC 5.1V Max 6000mA Power Backup for even the most demanding RPi set ups
  • Can work with X728-A2 stackable 2-cell battery holder/X708-A1 stackable 4-cell battery holder to increase battery capacity
  • Supports 3000mA fast battery charging
  • Integrated over current protection, over voltage protection, 10-A fully-integrated synchronous boost converter and Maxim's fuel-gauge systems (Reading battery voltage and percentage via i2c)
  • 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
  • Support auto power on function by set the on-board pin header
  • Ultra-low standby power consumption to maximize battery life
  • Advanced system power-path management avoids batteries frequent charging and discharging and 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 and allows the Raspberry Pi to retrieve the current date and time when it is switched back on
  • Uses the battery to maintain the date and time - no additional battery required
  • Powers the Raspberry Pi via the 40-pin header - no additional cabling required
  • Reserves the 40-pin header that can be stacked with other Raspberry Pi accessory boards

[Specifications]

  • UPS output : 5.1V ±5% Max 6A
  • UPS charging current: 2.3~3.2A
  • Terminal Battery Voltage : 4.24V
  • Recharge Threshold : 4.1V

Note:

  • Do not apply power to your Raspberry Pi via the Micro USB socket or Type-C socket.
  • Do not use battery with built-in protection circuit.
  • Please power off before remove or plug in any batteries.
  • Please make sure the polarity of battery is "+" to "+" and "-" to "-" and match with the "+" "-" mark on battery holder. The battery protection chip IC will be over-current, heat and then burnt if one or two of the batteries are connected reversely.

[Match Metal Case for Raspberry Pi 4]

  • Please refer to X728-C1 metal case (ASIN: B09Z6C64NN).

[Packing List]

  • 1x X728 Expansion Board
  • 8x Screws M2.5 *5mm
  • 4x Spacer M/F M2.5x20mm
  • 4x Spacer F/F M2.5x20mm
  • 1x Jumper link Pitch 2.54mm

X728 V2.5

X728 V2.5

Read Me

Please make sure the polarity of battery is "+" to "+" and "-" to "-" and match with the "+" "-" mark on battery holder. The battery protection chip IC will be over-current, heat and then burnt if one or two of the batteries are connected reversely.

X728 V2.5 Jumper Cap Function

X728 V2.0