rmingon/lipo-battery-charger

Lipo battery charger with different speed of charging

Lipo charger with mcp73831 and multiple charging speed

this project use MCP73831 for charging lipo with multiple type of connectors.

Charging speed selector

• 50ma use 20k resistor
• 100ma use 10k resistor
• 200ma use 5k resistor
• 500ma use 2k resistor

You can change resistor with help of this grah (see datasheet for more info HERE)

really easy calculator for charging speed to resistor to set

const charging_speed = 500 // set here your charging speed desired in milliamps
if (charging_speed > 500) 
    alert("Can't charge more than 500ma")
else
    alert(1000/(charging_speed/1000)+"Ohm")

3d view

Schematic screenshot

Pcb screenshot