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Description

18650 2S2P Battery Charger, Protection and 5V Output Board

18650 2S2P Battery Charger and Protection

This product was designed as a breakout power board for portable projects. I'm currently working a few medium sized projects which needed a reliable battery power supply with USB-C charging faster than 1A, and with a 5V output. This board was designed as a one-size fits all solution to these projects and provides the following features:

Four 18650 Lithium Cells in a 2S2P configuration (allows high capacity and buck conversion to 5V)
USB-C charging (charging current of 1.5A - configurable by choice of RISET resistor value - see schematic)
Automatic balanced cell charging
Battery protection chip for overvoltage, overcurrent and overdischarge protection
8.4V to 5V buck conversion for stable 5V output at high current draw
4 seperate GND and +5V output pin sets

Schematic and Layout

Board Schematic

Battery Charger Schematic.png

Download Gerbers Download BOM(Bill of materials)

Nov 08,2024

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18650 2S2P Battery Charger, Protection and 5V Output Board

This board takes four 18650 Lithium Ion cells in a 2S2P configuration, charges them at 1.5A over USB-C and provides 5V output power

Published: Nov 08,2024

Download Gerber file 2

BOM(Bill of materials)

Centroid file

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