John Bradnam
Published © GPL3+

Portable Rechargeable Power Supply

A 3V to 20V portable rechargeable power supply from off-the-shelf components. Powered by a single 18650 battery.

BeginnerFull instructions provided6 hours166
Portable Rechargeable Power Supply

Things used in this project

Hardware components

18650 Battery and Holder
×1
3.7V 9V 5V 2A Adjustable Step Up 18650 Lithium Battery Charging Discharge Integrated Module
×1
0.28in 3-Digit 2 Wire Voltmeter
Search for "Portable 0.28inch LCD Two Wire Mini Digital DC Voltmeter Gauge Voltage Detector"
×1
100K Linear RK097N Sealed Potentiometer
×1
Push Button Switch Latching on/off DPDT 0.5A 50VDC 8x8mm
with button tops
×2
DC Panel power jack
×1

Hand tools and fabrication machines

3D Printer (generic)
3D Printer (generic)
Soldering iron (generic)
Soldering iron (generic)

Story

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Custom parts and enclosures

STL Files

STL files for 3D printing

Schematics

Wiring Layout (fullsize)

Credits

John Bradnam

John Bradnam

82 projects • 72 followers

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