Hi, people smarter than I am. I have a 3rd gen iPod. Through some insane fluke in the universe, I was able to replace the battery myself a year ago. Now I need a car charger. I don't understand the volts and amps, and I know that if I get the wrong charger it will fry my iPod. It is the 20gb iPod with 4 buttons at the top. No clickwheel. This is the spec page. Please help! Will this one work? Thanks a million!