Lithium Polymer Battery Charger Circuit Diagram

This simple easy to construct li ion battery charger circuit is made with ic mcp73831 2 from microchip.

Lithium polymer battery charger circuit diagram.

Here is presented a simple 500ma 4 1v or 4 2v li ion battery charger that is. In this project we will build a two stage battery charger cc and cv that could be used as to charge lithium ion or lithium polymer batters. This mcp73831 2 ic will give constant current and constant voltage for charging battery and. Li po battery or lithium polymer battery is a rechargeable battery based on the lithium ion technology enclosed in a flexible pouch.

Referring to the shown lipo battery charger circuit diagram the entire design could be seen configured around the ic lm317. Lithium polymer lipo battery is a type of rechargeable battery that provides high. Here is a tried and tested sample circuit of a li ion battery charger that can be used to charge any 3 7v li ion battery using a 5vdc usb solar panel power supply. 6v 24v 48v external battery charger control.

The battery charger circuit is designed for 7 4v lithium battery pack two 18650 in series which i commonly use in most robotics project but the circuit can be easily modified to fit in lower or slightly higher battery packs like to build 3 7 lithium. At the heart of the circuit is one microchip mcp73831 available in sot 23 5 package. This soft flexible pouch makes them very light with a compromise in mechanical strength. A lithium polymer battery or simply a lipo battery is an advanced breed of the more popular lithium ion battery and just like it s older counterpart is specified with stringent charging and discharging parameters.

It is available in tiny package hence most suitable for compact hand held and portable applications.