X750

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X750
X750
X750
X750
X750-A1


Overview

  • The X750 is a multi-functional expansion board for all current models of the Raspberry Pi using a 40 pin header. It provides intelligent and safe power management, safe shutdown, full power off through software and an advanced uninterruptible power supply.
  • The X750 reserves the 40-pin header that can be stacked with other Raspberry Pi accessory boards for enhanced applications, and it's the high-end product of the Geekworm UPS family.
  • ​Important Note: The X750-A2 must be use with X750 18650 UPS HAT Shield, it is no use if you just purchase the X750-A2 board.

Features

ITEM DESCRIPTION
FOR USE WITH Raspberry Pi 4 Model B/3B+/3B/2B/A+/B+
OPERATING SYSTEM · Raspbian Stretch
· Safe shutdown function tested for Raspbian, other operating systems to be tested and advised
KEY FEATURES

UPS Function
· 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 8000mA Power Backup for even the most demanding RPi set ups
· Four 18650 Cells Lithium Ion Holder, can work with only two or three or four 18650 Lithium Ion batteries
· Can work with X750-A2 4-cell battery holder to increase battery capacity up to 38400mAh (12 18650 batteries)
· Supports 2A via micro-USB socket or 3A via DC jack fast charging
· Integrated battery protection circuit
· Integrated over current protection and over voltage protection
· Integrated Maxim's fuel-gauge systems (Reading battery voltage and percentage via i2c) - Cabling required
· 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%
· On-board blue LED show the status of power on/off
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 to select auto power-on when power supplied or battery installed
· Ultra-low standby power consumption of μA to maximize battery life
· Operate in both charge mode and boost mode to allow full system management and battery power management
· Advanced system power path management avoids frequent charging and extend battery life
· Advanced system power path management allows 3A fast charging and powering Raspberry Pi at the same time
· Powers the Raspberry Pi via the 40-pin header - no additional cabling required
· On-board DC power jack (5.5*2.5mm) and XH2.54 connector 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 connectors allow to  power other devices
· Mounting holes and standoffs provide mechanical stability of the Raspberry Pi and X750 assembly
X751-A2 · With four 18650 cells Lithium Ion holder
· Ideal solution to increase battery capacity (total battery capacity up to 38400mAh, 12 18650 batteries)
· Integrated battery protection circuit
· Mounting holes and standoffs provide mechanical stability of the Raspberry Pi, X750 and X750-A2 assembly
Pins and GPIO used Pin No.  Usage
2,4 +5V power supply
3,5 I2C for UPS battery voltage and percentage reading
6 Ground
7 GPIO4 for power management
11 GPIO17 for power management
12 GPIO18 for power management
POWER SUPPLY · Via Micro-USB socket: 4.7~5.5Vdc, 2.5A;
· Via DC power jack: 4.7~5.5Vdc ±5%, ≥4A
· UPS output : 5.1V ±5% Max 8A
· UPS charging current: 2A via Micro-USB socket, 3A via DC jack
· Terminal Battery Voltage : 4.2V
· Recharge Threshold : 4.1V
NOTE · Power path management only enabled when applying power to the DC power jack
· 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

  • 1 x X750 Expansion Board
  • 1 x GPIO and power daughterboard
  • 1 x 8-pin connection cable
  • 8 x Screw M2.5*5 mm
  • 2 x Spacer M/F M2.5*22+6 mm
  • 2 x Spacer F/F M2.5*22mm

Pins and GPIO used

Pin No. Usage
2,4 +5V power supply
3,5 I2C for UPS battery voltage and percentage reading
6 Ground
7 GPIO4 for power management
11 GPIO17 for power management
12 GPIO18 for power management

X750-A2

With four 18650 cells Lithium Ion holder

  • Ideal solution to increase battery capacity (total battery capacity up to 38400mAh, 12 18650 batteries)
  • Integrated battery protection circuit
  • Mounting holes and standoffs provide mechanical stability of the Raspberry Pi, X750 and X750-A2 assembly

Packing List

  • 1 x X750-A2 Board
  • 1 x XH2.5 2Pin connector (Cable: 10cm/3.93inch)
  • 1 x Install Screws Pack

Document

We test this shell script base official Raspbian '2018-11-13-raspbian-stretch.img' version;

wget https://raw.githubusercontent.com/geekworm-com/x730-script/master/x730.sh
sudo chmod +x x730.sh
sudo bash x730.sh
printf "%s\\n" "alias x730off='sudo x730shutdown.sh'" >> ~/.bashrc
sudo reboot

FAQ

Q: 1. Will the X750-A2 stackable? Can we double or triple or more X750-A2 to hold 12/16 batteries?

A: No limit to X750-A2,you can stack mutiple X750-A2 to hold and add more batteries. But please note that the charging current is only about 2.5A, so the charging speed will be become slow if you stack mutiple X750-A2.

Q: 2. Will X750 have an auto shutdown if the battery is low?

A: Sorry no, the X750 does not support an auto shutdown if the battery is low.

Add your comment
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Anonymous user #4

3 days ago
Score 0++
What is the issue with using 18650 batteries with the protection circuit? (" Do not use 18650 battery with built-in protection circuit") Is it that the board has the same circuit and the batteries won't work?

Anonymous user #3

28 days ago
Score 0++
Is there a chance that a STEP model can be released for the board?

Admin

2 days ago
Score 0++
Hi, there is no plan right now, please pay attention to geekworm.com, thanks!

Anonymous user #2

one month ago
Score 0++

installed X750 hat on raspberri pi, installed new 18650 battery's powering via usb on X750 everything seems working ok, after loading batterys to full ( all four leds green lights up) the raspberry pi shuts down, whats going wrong??

have the same problems with unprotected as with protected new battery's 18650

Anonymous user #1

3 months ago
Score 0++

Just fyi,

Confirmed with seller that this does not have a low voltage cutoff. This will throw the devices attached to a boot loop. I just hope that this has low voltage battery protection to not destroy the battery.