Building a Solar Phone Charger: Voltage and Power Building a Solar Phone Charger: Voltage and Power

What You'll Need
Cell phone charger
Heat gun
Wire stripper
Solder iron
Soldering flux
Three inches of double sided tape
Four inches of large heat shrink tubing
Three inches of solder
Four inches of small heat shrink tubing
Two 3 volt 20 mA mini solar panels
3.5 X 2 tin case
There are sometimes when cell phone chargers are not available by conventional methods. This is when it helps to have an alternative. When going camping, you many not always have access to electricity, but you will need to keep your cell phone charged in case of emergencies. So what do you do? Building a solar cell phone charger has been the best option for many people and with a few surprisingly easy steps, you can make your own.

There are sometimes when cell phone chargers are not available by conventional methods. This is when it helps to have an alternative, such as a solar phone charger. When going camping, you many not always have access to electricity, but you will need to keep your cell phone charged in case of emergencies. So what do you do? Building a solar cell phone charger has been the best option for many people and with a few surprisingly easy steps, you can make your own.

Step 1: Shrink Tubing and Wires

After you have gathered your materials, you are ready to begin. First, you should cut all of the wires of your solar panels to approximately one inch in length and strip the ends of the wire so that at least one quarter of an inch is exposed. You will have one black wire and one red wire on each panel. Cut your tubing into one inch pieces. Next, insert the small heat shrink tubing onto the two black wires. Next, you will apply your flux to one red solar panel wire and one black solar panel wire. After your flux is dried and in place, you then solder those two wires together with your solder and soldering gun. 

Step 2: Heat Shrinking

After your two wires are soldered, the next step is to insulate the soldering you have just completed by sliding the small piece of tubing over the soldered joint and heat with heat gun until it has shrunk over the soldered joint. After your joint is insulated, you should then cut your cell phone charger wire about three feet from the plug-in for your phone. Strip about three inches of wire from the cut end so that the copper is exposed. Take your piece of large heat shrink tubing and place it over the main wire.

Step 3: More Soldering 

Now, you are ready to connect the main wire. On the main wire, take a piece of your shrink tubing and place over the red wire. Apply flux to main wire of charger and red wire of panels. Solder red wire of charger to red wire of solar panels and repeat for black wires. After you have completed this task, insulate the solder joints with your heat shrink tubes.

Step 4: Test and Attach

After all joints are soldered, you are ready to test the battery. Use the sun or a bright light and place the panels underneath. Plug in your phone to test. After you are successful, you are ready to attach to the tin case. Take your double sided tape and place over the underside of the solar panels. Tape panels to the inside of the tin case lid, slide in your wires, and you should be set for the woods.

 

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