SparkFun
SparkFun USB LiPoly Charger - Single Cell
The SparkFun USB LiPoly Charger is a single-cell Li-Ion/Li-Polymer battery charging board based on the MCP73831T. It charges 3.7V LiPo cells at a selectable ...
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The SparkFun USB LiPoly Charger is a single-cell Li-Ion/Li-Polymer battery charging board based on the MCP73831T. It charges 3.7V LiPo cells at a selectable rate of 500 mA or 100 mA via a solder jumper, with power input from either USB or a barrel jack connector.
The board includes a SYS OUT JST connector that lets you power your project directly from the charger without disconnecting the battery — ideal for always-connected setups where charging and operation happen simultaneously.
Key Features
- MCP73831T Charge IC – Reliable single-cell LiPo/Li-Ion charging
- Selectable Charge Rate – 500 mA or 100 mA via solder jumper
- Dual Power Input – USB and barrel jack connector
- SYS OUT Connector – JST output for powering your project while charging
- BATT IN Connector – Pre-installed JST connector for battery
- Status LED – Indicates charging state, with footprint for external LED
Ideal For
- Charging single-cell 3.7V LiPo/Li-Ion batteries
- Battery-powered Arduino and IoT projects
- Wearable electronics
- Portable devices requiring charge-while-running
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- 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.
- LiPo
- A LiPo (lithium polymer) battery is a rechargeable lithium battery widely used in portable projects because it is light and compact. LiPo cells need correct charging circuitry and careful handling to stay safe, so equipment that supports LiPo generally includes charging or protection hardware suited to that battery type.
- solder jumper
- A solder jumper is a small pair or group of pads on a circuit board that can be bridged or cut with solder to change a hardware setting. It matters because changing modes may require careful soldering rather than just changing software.
Find this product in
Brands
USB LiPoly Charger Single Cell Schematic
Schematic · 36.1 KB · Click any page to view full size
MCP73831T Datasheet
Datasheet · 928.8 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 783.8 KB · Click any page to view full size
Resources & Downloads
Guides, code examples, and more
Source Code
Open-source libraries, firmware & example projects for this product
USB LiPoly Charger - Single Cell
e5664fa
over 11 years ago
· 8 commits
- Hardware Updating README with product links over 11 years ago
- Production Files Updating README with product links over 11 years ago
- .gitattributes Updating README with product links over 11 years ago
- .gitignore Board File/Gitignore Commit almost 13 years ago
- README.md Updating README with product links over 11 years ago
Related Tutorials
Free guides on learn.littlebird.com.au
