Solar Charger

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About: I always liked making stuff and when my grandfather showed me Instructables I became an addict. I don't have any degrees yet but I'm working on my aeronautics engineering degree :-P

Hi,
In this step-by-step guide i'm about to teach you how to design and build a simple solar charger.


What you'll need:

1) Solar panel.
2) Adjustable Boost Converter Charger Module.
3) Electrical Wires.
4) USB female cable.
5) A box.
6) Recommended  - portable USB charger, a cord, led. 
7) Soldering Tin.
8) Duct tape.


Tools:

1) Plier.
2) Soldering iron.
3) Hot glue gun.
4) A knife.
5) Tweezers.
6) Voltmeter.

Step 1: Attaching Wires to the Panel

Solder electrical wires to the solar panel (Red to +, black to -).
Cover it with the duct tape. 

Step 2: Adjusting

Connect a power source to the charger module and a voltmeter to the output of it. Now adjust the module to 5v output.
connect the panel to the module (to the input).

Step 3: Connecting USB

Cut the USB cable and then solder the + cable to the + output in the module and the - cable to the - output. 

Step 4:

Mark on the top of the box the size of the solar panel.
Cut near the borders that you've marked so the hole is a bit smaller than the panel.

Step 5:

Use hot glue to glue the panel to the hole.
Now glue the other parts to the bottom of the box so they wont move, in the side make a hole as big as the USB cable.

* I recommend gluing the USB output well so sand and dirt wont come in.

**If you had cotton wool in the box i recommend putting it between the panel and the bottom it will also help preventing the parts moving.

Step 6: Finished!!

Now you can test your charger.

Step 7: Recommended Additions

* If you like to you can add a led to the module output so you'll know when its working.

** If your box is big enough you can add a portable charger instead of the USB output so power wont be wasted, that way you'll be able to use it even when the solar panel is not exposed to light.

*** I added a small loop to the side of the box so i will be able to hang the charger when driving the car, going on camping etc.

Step 8: That's It

I hope you enjoyed this guide, if you have any questions I will answer them happily.

Like this project? Check out my profile, my Facebook page and my YouTube Channel.

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56 Discussions

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215429881

8 months ago

hy can someone please help. i dd a similar project i also included a battery for power storage, now the problem is when i remove the battery the phone will show that it is charging but the more i leave it connected the battery level decreases instead of increasing.. please anyone with an idea help me

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zhengran

Question 11 months ago on Step 4

I want to know more about the information of the solar panel, because I wanted to charge a 10 watt (5v, 2A input) power bank, can the solar panel provide sufficient power? Thank you!

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crashzoomSameerA1

Reply 3 years ago

An adjustable boost converter module. It should convert the input voltage from your panel to 5 volts. you can get one on Ebay, dx, ali express, etc.

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crashzoomshai023

Reply 3 years ago

I bought mine on Ebay but I'm sure you can get one on Amazon Ali express and radioshack stores.

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txy9002

3 years ago

Nice project! I'm wondering what should be the output and input of the portable charger...

1 reply
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crashzoomtxy9002

Reply 3 years ago

Tnx :) the input depends on the solar panel you use, the output should be set to 5 volts.

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crashzoomDeezzNutts

Reply 4 years ago

Not yet but I'm now making videos for the instructables I can.

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manish96crashzoom

Reply 3 years ago

Its a great project.... Bt I didn't understand d step 2 of it... Can u plz explain it more briefly...

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crashzoommanish96

Reply 3 years ago

The part I used here is an adjustable boost converter and you can control the voltage it outputs. In step 2 I connected the part to a power source and to a voltmeter, then I changed the voltage to 5v so it fits the USB voltage. If you have any further questions I'll be happy to answer them.

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DeezzNuttscrashzoom

Reply 4 years ago on Introduction

Thank u so much i was wondering is there any stores that sale charger module cause i am doing this solar power charger for a science fair project and i have everything that i need besides that and i need it by Friday :\

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crashzoomDeezzNutts

Reply 4 years ago

You're welcome, I think.. search for arduino stores, electronic stores might have it but arduino ones are your best chance I think.

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DeezzNuttscrashzoom

Reply 4 years ago on Introduction

thank you :) i was wondering do u have kik or something ?cause i found the part but i well be needing help and i hardly get on here