# UPS Module for Raspberry Pi Pico

**Type:** Product page · **SKU:** WS-20121 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/ups-module-for-raspberry-pi-pico.html ([markdown](https://core-electronics.com.au/ups-module-for-raspberry-pi-pico.html.md))

Keeps Your Pico Running While Recharging, Monitoring Battery Via I2C, Stackable Design

## Pricing

- **Price:** $21.75 (inc GST) — $19.77 AUD, exc GST
- **Quantity discounts:** 10+ $18.98 (exc GST) · 25+ $18.39 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 5 today, and up to 300 more in 12–19 days.

## Description

The **Pico-UPS-B** is a dedicated **UPS (Uninterruptible Power Supply)** module designed for Raspberry Pi Pico. It incorporates a Li-po battery switching charger with power path management, and also features onboard voltage/current monitoring via an I2C connection.

## Specifications

- **Recharge Voltage:** 5V
- **Control Bus:** I2C
- **Battery Support:** 3.7V Li-po with JST PH connector
- **Dimensions:** 60 × 21 mm
 
## What's Onboard

## ![](https://core-electronics.com.au/attachments/localcontent/Pico-UPS-B-details-intro_231952820cc.jpg)

1. **ETA6003 -** recharger chip
2. **INA219 -** voltage/current monitoring chip
3. **S8261 -** Li-po battery protection chip
4. **FS8205 -** Li-po battery protection MOS
5. **AO3400 -** reverse-proof MOS
6. **SI2305 -** counter current preventing MOS
7. **Rapsberry Pi Pico header -** for direct attaching to Raspberry Pi Pico
8. **Power switch**
9. **Activate button -** activate the protection circuit after replacing battery
10. **Battery header -** for connecting 3.7V Li-po battery
 
## Pinout

![](https://core-electronics.com.au/attachments/localcontent/Pico-UPS-B-details-inter_12748b36839.jpg)

## Dimensions

![](https://core-electronics.com.au/attachments/localcontent/Pico-UPS-B-details-size_14987c378eb.jpg)

## Resources 

- Wiki
 
## Shipping List

- 1 x UPS Module for Raspberry Pi Pico
- 1 x 600mAh LiPo
 
## SAFETY CAUTIONS

- Li-ion and Li-po batteries can be unstable and may cause fire or injury if not used properly.
- Ensure correct polarity when charging or discharging; avoid using poor-quality chargers.
- Do not mix old batteries with new ones, or use batteries from different brands together.
- When buying lithium batteries, ensure compatibility with your expansion board and choose reliable manufacturers. Conduct aging tests for safety.
- Lithium batteries should be replaced after reaching their cycle limit or after two years, whichever comes first.
- Store batteries carefully, away from flammable materials and out of reach of children to avoid accidents.

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-20121-4.jpg)