Waveshare
Mini Uninterruptible Power Supply module, Supports charging And Power output at the same time, 5V 2.5A Output
A compact uninterruptible power supply (UPS) module that supports simultaneous charging and power output. When external power is connected, it charges the ba...
Get notified when back in stock
A compact uninterruptible power supply (UPS) module that supports simultaneous charging and power output. When external power is connected, it charges the batteries while providing a stable 5V output. If external power is lost, it automatically switches to battery power without interruption — keeping your system running.
The module communicates over I2C (via an onboard INA219), allowing real-time monitoring of battery voltage, current, power, and remaining capacity. It is designed for easy integration into mobile robots, embedded systems, and industrial control applications.
Key Features
- Uninterruptible Power – Seamless switchover between external and battery power
- 5V 2.5A Output – Stable regulated output via ETA1188 voltage regulator
- I2C Battery Monitoring – Real-time voltage, current, power, and capacity readings (INA219)
- Comprehensive Protection – Overcharge, over-discharge, overcurrent, short-circuit, and reverse-polarity protection
- Equalising Charge – Balances battery cells for safer, more stable operation
- Dual Charging/Discharging Methods – Via solder pads (5V 3A in / 5V 2.5A out) or pin headers
- Status Indicators – Power, charging, and reverse-connection warning LEDs
- Boot Button – Battery activation switch
Onboard Components
- ETA1188 – 5V voltage regulator
- ETA6953 – Battery charge/discharge controller
- INA219 – Voltage/current monitoring IC
- S8261 – Battery protection IC
- RT9193 – 3.3V voltage regulator
- AO4402 – Battery protection MOSFET
LED Indicators
- Power LED – On when UPS output is enabled
- Charge LED – On: charging · Blinking: battery abnormal or not connected · Off: complete or not charging
- Reverse Warning LEDs – On if a battery is connected with reversed polarity
Ideal For
- Raspberry Pi and Compute Module backup power
- Mobile robotics and embedded systems
- Industrial control and IoT devices
Package Contents
- 1× UPS Module Mini
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- Headers
- Rows of connector contacts on a fixed pitch (commonly 2.54 mm) used to link a board to a breadboard, jumper wires, or another board. They come as male pin headers and female socket headers; when a module ships with pre-soldered headers it can be used straight away, whereas bare pads require soldering the pins yourself.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- UPS
- An uninterruptible power supply is a battery-backed power system that keeps a device running when external power is unplugged or fails. For an embedded computer, it helps prevent sudden shutdowns that can corrupt files or interrupt a project.
Find this product in
Power & Batteries
