How to Make a Solar USB Charger! (simple!)





Introduction: How to Make a Solar USB Charger! (simple!)

Thanks for all of the views guys! If you want to read my news letter click here

Welcome! I will show you how to make a solar usb charger that out puts about 6v and is perfect for charging anthing that uses USB. This is perfect for someone new to soldering! Here is the finished product:

Step 1: Parts

You need the following:
1x USB extension a/a cable (That's where I got mine.)
1x Any Diode (RadioShack #: 276-563)
1x 6v Solar panel (RadioShack #: 277-1205 )
Soldering iron(RadioShack #: 64-2051)
1x Project box (Radioshack #: 270-1803) I would maybe chose a smaller on, I had a bigger one laying around.
Electrical Tape
Glue Gun or tape to hold the peices in place.

Thats it!

Step 2: Getting Ready

This is a simple circuit so all you need to do before you solder is Cut the USB extender cable towards the bigger side. Leave an inch (or two if you want) and then cut off the shielding and get rid of everything except the red and black wire

Step 3: Time to Solder!

Now look at the picture below. You need to solder the Diode to the red wire from the solar panel then the red wire from your extension cable to the diode. That was the hardest part in this tutorial! now just solder the black wire from the solar panel to the Extension cable and your done soldering!
Now, just cover those spots in electrical tape. and your almost done!

Step 4: Drill!

Now you just need to drill a hole for your cables to go through on top (from the solar panel) and another hole for the cable.

Step 5: Glue It Together.

This is the last step. Just put glue around the extension cable and on tp of your project box to glue on the solar panel and your done!

Step 6: Test It Out!

Its charging up my blackberry perfectly! It is even 7:30 here and not too bright.



  • Creative Misuse Contest

    Creative Misuse Contest
  • Water Contest

    Water Contest
  • Clocks Contest

    Clocks Contest

319 Discussions

Just made it w/ 2 6V 3W panels and a 5V regulator

Works great, thanks!

i have galaxy core prime. its charger have 5v/0.7a output. charge voltage has 4v/2000mah. what materials i need to buy?


2 years ago

I have a 47V, 3amp solar panel. What's the best way to make a USB charger for this? It would charge a USB power bank, which would then charge a phone.

Pls I'm gonna need some help on how to get the needed stuffs... I don't have any idea on how to get it here in Nigeria.... I'll be glad if I can get help

Can you please post a video

I didn't get the drilling part. Exactly how many holes have to be drilled and where?

well hopefully this time my post will go thru...I like the idea of a solar powered cell charger, but one thing is which direction does the diode go? Is the negative side towards the panel or the output USB side? Please let me know because I just hooked it up and the sun is still bright in the sky and I get full power directly off the panel, but I get zero from the output! Now, I may not have the correct cable because I pulled it from another charger and the cable is a lot thinner that the wires I soldered to the panel so that may be my issue but is should still give me voltage either way and it's not! Please let me know and thank you.

I would suggest measuring the voltage from the solar panel, see if it's getting anything, then connect the diode and check again, at each step checking if there's current

Hey i bought a 6v and 100mA solar panel and a zener diode of 12 v and 1 watt and connected all as shown. Wen i expose the solar panel in sun it shows me charging on my phone but i waited for long time still my battery is same and not charging!! Please help as soon as possible...

4 replies

Probably because 100mA isn't even enough to put a dent in the charge of a cell phone. Could power an led or something but phones use a lot of energy.

100mA is basically the amount provided by the a computer USB. A zener diode clamps the voltage when the voltage exceeds its rating. I would look at the zener it is probably reducing power.

if you use a regulator it will boost the power from 100ma to 500ma or 1 amp and will keep a stedy rate at 5 volts