Chris Haynes

UNITED KINGDOM • + Follow

Jean-Loup Smirr

FRANCE
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Brandie Lee

UNITED STATES OF AMERICA
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Engineer

NETHERLANDS, THE
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Engineer

KOREA, REPUBLIC OF (SOUTH K.)
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11

Tools, APP Software Used etc.

KiCAD

Kicad

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

4,431 views

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

4431

10.00 (1)

Published: Nov 08,2024

Standard PCB

Download Gerber file 74

BOM(Bill of materials)

Centroid file

Other files for Assembly

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