DIY GUY Chris
Published © MIT

DIY Smart Lithium Battery Charger With LED Fuel Gauge

Built a smart Li-ion charger with 10-LED fuel gauge. Features BQ24075 for charging & LM3914 voltage monitoring. Full build guide available!

IntermediateFull instructions provided2 days10
DIY Smart Lithium Battery Charger With LED Fuel Gauge

Things used in this project

Hardware components

LM393 chip
Texas Instruments LM393 chip
×1
Battery, 3.7 V
Battery, 3.7 V
×1
SparkFun Block for Intelยฎ Edison - Battery
SparkFun Block for Intelยฎ Edison - Battery
×1
JLCPCB Customized PCB
JLCPCB Customized PCB
×1

Software apps and online services

Circuit Maker
CircuitMaker by Altium Circuit Maker

Hand tools and fabrication machines

Hot Plate, Convection
Hot Plate, Convection
Tweezers, SMD Soldering/Desoldering
Tweezers, SMD Soldering/Desoldering
Soldering iron (generic)
Soldering iron (generic)
Solder Paste, Rework
Solder Paste, Rework
Solder Wire, Lead Free
Solder Wire, Lead Free

Story

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Custom parts and enclosures

Assembly aid

Sketchfab still processing.

Schematics

Schematic

Credits

DIY GUY Chris
53 projects โ€ข 349 followers
I'm having fun while making electronics projects, I am an electrical engineer in love with "Do It Yourself" tasks.

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