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# Adafruit Mini Lipo w/Mini-B USB Jack - USB LiIon/LiPoly charger - v1

**Type:** Product page · **SKU:** ADA1905 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/adafruit-mini-lipo-w-mini-b-usb-jack-usb-liion-lipoly-charger-v1.html ([markdown](https://core-electronics.com.au/adafruit-mini-lipo-w-mini-b-usb-jack-usb-liion-lipoly-charger-v1.html.md))

Oh so handy, this little lipo charger is so small and easy to use you can keep it on your desk or mount it easily into any project! Simply plug it via any MiniUSB...

## Pricing

- **Price:** $13.65 (inc GST) — $12.41 AUD, exc GST
- **Quantity discounts:** 10+ $12.04 (exc GST) · 50+ $11.79 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 18 and Aug 24.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA1905:1` (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.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA1905:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **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

Oh so handy, this little lipo charger is so small and easy to use you can keep it on your desk or mount it easily into any project! Simply plug it via any MiniUSB cable into a USB port and a 3.7V/4.2V lithium polymer or lithium ion rechargeable battery into the JST plug on the other end. There are two LEDs - one red and one green. While charging, the red LED is lit. When the battery is fully charged and ready for use, the green LED turns on. Seriously, it could not get more easy.

Charging is performed in three stages: first a preconditioning charge, then a constant-current fast charge and finally a constant-voltage trickle charge to keep the battery topped-up. The charge current is 100mA by default, so it will work with any size battery and USB port. If you want you can easily change it over to 500mA mode by soldering closed the jumper on the front, for when you'll only be charging batteries with 500mAh size or larger.

**For use with Adafruit LiPoly/LiIon batteries only! Other batteries may have different voltage, chemistry, polarity or pinout.**

- Comes assembled and tested with a free bonus JST cable!
- BAT pin connects directly to the positive JST connector pin if you wish to solder your battery directly to the board
- 5V input via Mini-B USB connector
- For charging single Lithium Ion/Lithium Polymer 3.7/4.2v batteries (not for older 3.6/4.1v cells)
- 100mA charge current, adjustable to 500mA by soldering a jumper closed

[Batteries](https://core-electronics.com.au/lithium-ion-polymer-battery-3-7v-1200mah.html) not included.

## Technical Details

Details:

- Dimensions: 24mm x 19mm x 2mm / 0.9" x 0.7" x 0.08"
- Height w/ JST: 7mm / 0.3"
- Weight: 2.5g
- [Datasheets, PCB CAD files, and Fritzing objects available in the tutorial](https://learn.adafruit.com/adafruit-microlipo-and-minilipo-battery-chargers/downloads)

![](https://core-electronics.com.au/attachments/localcontent/rohs_icon_8216055e11.jpg)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/9/1905-01.jpg)