> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 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.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=WS-20121:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
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- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## 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)