Pi Zero UPS USB HUB
Compatible with Raspberry Pi Zero series, Uninterruptible Power Supply, 3-Port USB2.0, Battery Monitoring
Pi Zero UPS USB HUB
Compatible with Raspberry Pi Zero series, Uninterruptible Power Supply, 3-Port USB2.0, Battery Monitoring
1. Product Introduction
Compatible with Raspberry Pi Zero Series, Uninterruptible Power Supply, 3-Port USB 2.0, Battery Monitoring
This UPS expansion board, specifically designed for the Raspberry Pi Zero, combines efficient power management with USB expansion functionality, providing stable and reliable power support to ensure continuous system operation during power outages. The compact design features an 18650 battery holder and an external lithium battery interface, supporting flexible battery options. Paired with intuitive battery level indicators and charging status display, users can monitor the battery status at any time. The board also includes three USB 2.0 Type-A female ports. A toggle switch allows easy selection between standard USB HUB mode and Raspberry Pi Zero USB HUB mode, expanding USB functionality to meet various device connection needs. The reverse battery connection protection feature ensures safe operation, preventing risks associated with incorrect battery installation. This expansion board provides an efficient and reliable power solution for Raspberry Pi Zero developers.
2. Product Features
- Uninterruptible Power Supply:** Onboard charging IC with path management enables fast switching between charging and discharging, allowing for simultaneous charging and discharging without power loss.
- USB Expansion Functionality:** Three USB 2.0 Type-A female ports, supporting switching between Normal USB HUB mode and Pi Zero USB HUB mode.
- Onboard battery level LED display IC for intuitive understanding of battery status.
- Real-time monitoring of module operating status. Features onboard boost converter and battery monitoring IC, providing stable 5V output while monitoring battery voltage, current, power, and other parameters.
3. Product Parameters
Model | Pi Zero UPS USB HUB |
USB Interface | 3-Port USB 2.0 |
Battery Monitoring IC | INA219 |
Communication Interface | I2C |
Battery Interface | 18650 Battery Holder, PH2.0 2-Pin 3.7V Lithium Battery Connector |
Output Voltage | 5V |
Mounting Hole Diameter | 2.5mm |
Dimensions | 87mm(L) x 57mm(W) |
Dual-mode USB hub switch
Normal Mode / Pi Zero Mode | One-Switch Toggle
Normal Mode
When toggled toward Type-C：It operates in Normal USB HUB Mode, allowing 3 USB 2.0 expansions for any device via a single Type-C data cable.Power switch must be ON to enable 5 V output.
Pi Zero Mode
Battery Installation and Protection
Reverse Polarity Protection: Alarm LED lights up if battery polarity is reversed. Remove and reinstall battery correctly.
Battery Power Display System and Monitoring
Four LEDs provide a four-level battery indicator, allowing users to intuitively understand the current battery status.Battery Monitoring: INA219 sensor monitors voltage, current, and power via I²C. 
In discharge mode: when the power switch is set to ON, the LEDs dynamically display the remaining battery level; when set to OFF, the output is disabled and the LEDs turn off simultaneously.In charging mode: the CHRG red indicator remains ON during charging and turns OFF when fully charged.When no battery is connected and the board is powered via USB, the CHRG indicator will flash.UPS Uninterrupted Power Supply
Continuous Power During Outage | Charge & Use Simultaneously
Usage Flowchart
Step one：Turn the power switch off
Before Assembly: Ensure the power slide switch on the extension board is set to the "OFF" position, disconnecting the 5V output.
Step TWO：Main Board Installation
Align the Raspberry Pi Zero main board with the power, communication, and USB header pins on the extension board. Use the provided M2.5 standoffs and screws to securely fasten the main board to the extension board, ensuring no misalignment exists between them.
Step three：Connecting the Battery
It is recommended to connect the lithium battery to the board after the mechanical fastening is complete.
Step Four：Powering On
Slide the power switch to the "ON" position. This enables the 5V output and boots up the Raspberry Pi Zero.
Module Resources
①Power & Communication Pins.
②Battery Level Indicator LEDs.
③USB HUB Pogo Pin Interface.
④Type-C Connector: Supports 5V power input and USB HUB functionality.
⑤18650 Battery Holder (Pay attention to polarity during installation).
⑥Charging Status Indicator.
⑦Reverse Battery Connection Warning LED: Lights up when the battery is connected in reverse.
⑧Battery Output Activation Button.
⑨Power Switch.
⑩USB 2.0 Type-A Female Port.
⑪PH2.0 2-Pin 3.7V Lithium Battery Expansion Connector (Pay attention to polarity when connecting).
⑫Function Toggle Switch: Used to switch between Normal USB HUB function and Pi Zero USB HUB function.
Product Size
Wiki
https://seengreat.com/wiki/189