UPS Module 3S – 5V 5A Uninterruptible Power Supply with 3× 18650 Batteries
UPS Module 3S – 5V 5A Uninterruptible Power Supply with 3× 18650 Batteries has a 5-10 day lead time before dispatch. Order will only be sent once all items are available for delivery.
UPS Module 3S – 5V 5A Uninterruptible Power Supply with 3× 18650 Ba...
The UPS Module 3S by Waveshare is an uninterruptible power supply that keeps your Raspberry Pi, Jetson Nano or robot running when mains power drops out. It charges and powers your project at the same time, so it switches to battery without a reboot or lost data.
The module takes three 18650 lithium cells in series (3 batteries included, spare batteries can be purchased here) and provides a regulated 5V 5A output, enough for a Raspberry Pi 5 under load. It also outputs the raw battery series voltage and 3.3V. An onboard INA219 reports battery voltage, current and power over I2C, so your software can monitor charge level and shut down safely before the batteries run flat.
Features
- Charges and outputs power at the same time for true uninterruptible operation
- Onboard 5V regulator with up to 5A continuous output, ideal for Raspberry Pi and Jetson Nano
- Additional battery series voltage and 3.3V 300mA outputs
- I2C monitoring of battery voltage, current and power in real time via the onboard INA219
- Selectable I2C logic level: 3.3V (default) or 5V
- Over-charge, over-discharge, over-current, short circuit and reverse polarity protection
- Equalising (balance) charging keeps all three cells at matched voltages
- Battery reverse warning indicators to confirm cells are installed correctly
- Power output switch and multi-functional expansion header
- Connects via cables, so it is easy to integrate into mobile robots and industrial control equipment
- Online development resources and manual available
Applications
- Raspberry Pi and Jetson Nano backup power
- Mobile robots and rovers
- Home servers and Home Assistant hubs
- Portable and field-deployed projects
- Industrial control and data logging equipment
Specifications
| Output Voltage | Battery series voltage; 5V 5A; 3.3V 300mA |
|---|---|
| Control Interface | I2C |
| Battery Support | 3 × 18650 Li-ion batteries (in series) |
| Charger Input | 12.6V 2A |
| Dimensions | 60 × 93mm |
| Mounting Hole Size | 3.0mm |
What's Included
- 1 × UPS Module 3S
- 3 × 18650 lithium batteries (spare batteries can be purchased here)
Parts Overview
Pinout
What's On Board
| 1 | S-8254AA lithium battery protection |
|---|---|
| 2 | SY8286 5V voltage regulator |
| 3 | HY2213 equalising charge |
| 4 | INA219 voltage and current monitoring |
| 5 | RT9193 3.3V voltage regulator |
| 6 | NDC7002N voltage translator |
| 7 | AO4407A battery protection MOSFET |
| 8 | Power port (12.6V 2A input) |
| 9 | Power output switch |
| 10 | Battery series power output |
| 11 | 5V power output |
| 12 | Reverse warning indicators |
| 13 | Multi-functional expansion header |
| 14 | I2C level selection, 3.3V (default) / 5V |
Dimensions
Documentation: UPS Module 3S Wiki
This product can be found here:
