Overview

MCP73832 based LIPO battery charger with selectable charge current.

Details

I made this board as a simple exercise to get to know KiCAD a bit better. It turned out quite okay :) I have a few more of them they're for sale here.

A simple jumper selects the charge current. By default this allows selecting 20mA, 100mA and 500mA but if you have a different requirement just let me know as I can easily use different resistors while assembling.

The LED indicates that the battery is being charged. If it is fully charged the LED will go off. The board ships with a green LED by default. If you prefer another color just let me know, the following are possible: blue, red, yellow, orange and green. The LED is connected with a 6.8k resistor by default avoiding the "deadly-bright-annoying-LED" symptom. If you want a brighter LED, just let me know.

What you get

• one board, with all the SMD parts including USB connector and lipo connector already assembled
• one 6-pin header for the current select jumper (to be soldered on!)
• one jumper
• a 2 pin connector which can be used to directly power a device from the board (also to be soldered on!)

Disclaimer

• Make sure the battery polarity is correct!
• Only use batteries with protection circuits build-in!
• Use this product at your own risk!