Hack a Trickle Solar Vehicle Charger

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Introduction: Hack a Trickle Solar Vehicle Charger

About: When the world drives you crazy, go to instructables.com and learn something new instead

Extensive research on small solar systems <5 watts led me to this little inexpensive ($12.99) charger from harbor freight.  Sure it is big, but it is also 12V at 1.5 watts and cost less than some 1 watt panels when shipping is included (http://adafruit.com/products/262).  it is a 17.5V? open circuit but who wants that awkward voltage? 12V is a nice round number so i kept the trickle circuit and stepdown in.
I took apart the car charger part and did my own little edits to it and made it into a solar source.
The regulating circuit and stepdown were included, the teardown of picture 2/3 was just to show what the car port adapter looked like inside.
I also had the cell in my window powering an LED for a couple weeks......just for fun

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    3 Discussions

    0
    mysterion
    mysterion

    7 years ago on Introduction

    No,

    Just kidding here's the link
    https://www.instructables.com/id/Step-By-Step-hack-a-trickle-solar-charger/
    let me know if you need any help!

    0
    jschumaker
    jschumaker

    7 years ago on Introduction

    Where did the trickle circuit and stepdown come from?

    0
    mysterion
    mysterion

    Reply 7 years ago on Introduction

    sorry, I think i forgot to mention that, I made this a while ago but the solar charger came with it