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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 ...
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)
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 ...
Now for the easiest part of the instructable. Grab one the test leads and connect it to the outer terminal of the USB charger and to the ground ...
Plug the laptop charger in and flip the switch. If the USB charger has an indicator LED it should light up. Else you have to plug something up ...
One thing you can do differently is replace the laptop charger with a 12 V 5-7 Ah battery and take it with you. I calculated that on a 7 ...
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