Picture of Solar MOBILE PHONE charger DIY
Easy :

1 . cd case
2  solar battery  x2     (5,5v )
3  usb cable

Step 1:

Picture of
put batteries in to cd case and add the wires.
alexx221 year ago

You cannot use IC LM7805 because his operating voltage is 7 to 20 volt. If you add a silicon diode(example 1N4007) the voltage will fall 0.7 volt. Nice project !!!


solar charger circuit.jpg
mdesai32 years ago
That's very easy , thanks for photos too,.. but i think you should put IC 7805 (voltage regulator) to regulate voltage because for many phones' battery 5.5 volts may be high !!

robo103022 years ago
its really nice project but i think u should add 5v regulator in it.:)
miicchhii2 years ago
WOW! Thats definitly nothing you should connect your phone to!
5.7V is too much for many charging logics and it might ruin your cellphone.

In addition, many phones require a minimum current supplied, which can not be guaranteed when using direct sunpower.

Its far better to use a regulated voltage to charge a cellphone, also you should buffer the energy to stabilize the voltage and prevent a permanent on/off when clouds hide the sun.

This is what i did: Article
Its a charging controller with LiPo packs, charging over USB or Solar Panel and giving the energy to any USB-Device plugged in when its needed, not only when there is sunlight.

Although the CD-Case-Panel looks nice, its not recommended to use.

l8nite3 years ago
I think you meant solar panel not battery. It's a neat idea
Staszek (author)  l8nite3 years ago
Right, sorry for that ;]
Sounds nice and simple! Where do you get a solar battery? Is it hard to hook the USB to the solar battery?
Staszek (author)  Penolopy Bulnick3 years ago

Polish version of e-bay :
It's not hard ;)
Mobile phones are picky when it comes to the charging voltage. Also, the charging current is definitely bigger than your solar cells. I wouldn't use it on my Iphone. Hint: use them without that plastic lid on. The charging will be shorter.