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How to made travel charger for mobile telephone

Picture of How to made travel charger for mobile telephone

How to made travel charger for mobile telephone

 

We need:

Car telephone charger,

8 batteries AA or another batteries on 1.5 V (8*1.5 = 12V),

battery holder box,

car cigarette lighter socket.

 

2. Connect the cigarette lighter socket to the battery box ( «+» - on center). Put batteries. Connect car telephone charger to socket.

 

3. It‘s a very useful thing for a traveler. One set of batteries can charge Nokia N73 for 3 to 5 times.

 

 
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Step 1:

Picture of
01.jpg
We need:
Car telephone charger,
8 batteries AA or another batteries on 1.5 V (8*1.5 = 12V),
battery holder box,
car cigarette lighter socket.

Step 2:

Picture of
2. Connect the cigarette lighter socket to the battery box ( «+» - on center). Put batteries. Connect car telephone charger to socket.

Step 3:

Picture of
3. It‘s a very useful thing for a traveler. One set of batteries can charge Nokia N73 for 3 to 5 times.

Also this Instruction in Russian on my blog.
fersidhe3 years ago
Super Idea. Yes, 12V when you only need 5V is a little wasteful, however, this is fantastically easy to build. I am going to build this, mount it in a small cigar box, and use it with rechargeable batteries at weekend camping trips to charge my i-devices and androids.
chriszzz4 years ago
This will work, but does not make any sense. Why would you use 8 batteries to get 12V to charge a phone that only needs 5V to charge ? Most phones charge using only 5-6V, so you would only need 4 batteries, and a USB charging cable ( which is cheaper, lighter and more robust than a car charger ).

A voltage regulator would make it "safer", but it's probably not needed since 4 batts should be pretty safe.
lemonie4 years ago

It'll work but had you thought about re-building the charger to run on less than 12V? It'll output much less than 12V, but it's obviously designed to adapt from a car's supply.

L
vintovkin (author)  lemonie4 years ago
It`ll be too difficult for me!

If there's a voltage-regulator in there it may be easier than you think.

L