Instructables
Picture of Quick 'n' easy USB charger
My iPod Touch was dying and I didn't want to turn my laptop on just to charge it. But then I thought of an old laptop charger I had that was still good, so I got to work. And so I have hacked together an USB charger.

Step 1: List of things you need

You need:
wire cutters
wire strippers
switch
three alligator test leads
USB car charger
Old laptop charger: 20V max, 1.5A is reasonable
DMM ( optional)

Step 2: Prepare the laptop charger

First, cut the DC out cord in two. It doesn't matter where. Mine was shorted in a few places so I cut it before the first split. Then you need to cut the outer insulator about an inch. After that, remove 1/3 of the shield. This shield will be your ground or your positive rail, depending on the charger. After you remove the shield, you will have 2/3 white insulation in the center. Remove 1/2 of this revealing the center wire. You should now have 1/3 shield 1/3 insulation then 1/3 wire. The charger is now ready. Use the DMM to verify that the charger is correct in voltage and that the center wire is indeed positive.
philip421 year ago
Cute - but why bother? Replacement USB AC chargers are about $1 - brand new (at my local Dollar Store).
qazxsw21000 (author)  philip421 year ago
I was using what I already had on me. Plus, going to go buy one would defeat the purpose of not using my laptop - it would have been too easy.
philip421 year ago
Cute - but why bother? Replacement USB AC chargers are about $1 - brand new (at my local Dollar Store).