Introduction: Charge Your Phone With a Car Battery (6V-24V)
Charging your smartphone while camping outside is not always easy. I am showing you how to charge your phone by using a car battery and a moped battery. You can also use the gadget with any kind of 6V-24V power source.
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Step 1: Watch the Video!
The video already talks about the most important facts. But I will also give you some more informations about the project in the next steps.
Step 2: It Is Time to Choose Your Circuit!
You may have noticed that I build 2 cicuits inside this gadget, which basically have the same function. But they have their own pros and cons:
+ very simple, perfect for beginners
+ very cheap
+ useful when you only need a little current
- efficiency is horrible with higher voltages (24V --> 21%--> becomes a heater)
(12V --> 42%--> not nice)
- more complex circuit
- more parts, more costs
+ efficiency is quite good for a DIY phone charger (around 80%)
You can decide which one you want to use or maybe you build both. It is up to you.
Step 3: The Simple Way: LM7805!
Get your parts here:
Capacitor Kit: http://amzn.to/1vEZGGc
Capacitor Kit: http://amzn.to/10pis9P
You only need 3 parts for this circuit. If you got all the parts then follow the schematic to create your circuit. Feel free to store your new gadget in an awesome case.
Step 4: The Efficient Way: LM2576!
Get your parts here:
LM 2576 (be sure to get the 5V version, there also exists an adjustable one):http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
This circuit requires 5 parts. But it is still pretty cheap and creating the circuit should be fairly easy.
Step 5: Combine the Circuits and Make a Case!
If you decided to build both circuits and you want to combine them in one awesome case like me, then get your parts and follow the schematic.
Green LED 5mm:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
Step 6: Success!
I hope your new gadgets works great and you enjoyed this project.
Feel free to check out my Youtube channel for more awesome projects.
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