iPod Charging

I recently received my IPod Touch for my birthday. This is my third iPod so you might imagine that I have racked up a few pieces of iPod paraphernalia. Sadly this stuff doesn’t all work with every ipod, specifically chargers. The old mini will charge off of anything that is close to 5 volts. The iPod 5th gen isn’t as receptive but not terrible, very picky about 5-6volts. Finally the iPod Touch 2g hasn’t worked with anything except the computer. There’s a reason for this, and later I found out it is the same for the iPod video.

This is because the new touch requires 5V on pin 1, ~2.4V on pins 2 and 3, and GND on pin 4 on the USB interface in order for it to charge. This means that the Apple chargers send out an input and an output to the data pickups to tell the iPods that it is a certified Apple product. This is annoying to me, 5 volts is 5 volts no matter how you slice it, this is just mean. I don’t want to spend MORE money on a bunch of charges when I have plenty that can do the job. I made this circuit which I found on the interwebs and confirmed through some maths that i learned in enginerd school.


I have tested all my iPods that didn’t work previously on the chargers and they all work with this “adapter cable.”

Parts Needed:

· spare USB extension cable (will be cut in half)
· 2 x 560 kOhm resistors
· 2 x 150 kOhm resistors
· soldering supplies

USB Wiring Info

Pin Name Cable color Description
1 VCC Red +5 VDC
2 D- White Data –
3 D+ Green Data +
4 GND Black Ground

To create it just connect/solder the wires together according to the schematic. I highly recommend once you’re done that you test it with a voltmeter to make sure the voltages are correct on all pins before plugging it into your iPod.

DISCLAIMER: I will not be held responsible for anything that goes wrong as a result of attempting this project.