I have an iPod Classic 5.5G since May 2008 (160GB version) and since then I can only charge i by a computer USB port or an USB mains adapter. But using a car charger it did not work. Now I ordered a higher power (2 amps) car charger for my iPad2 which worked flawlessly on my iPad2. Even connected to my 6 Volts, 1A solar panel it charged the iPad in about the same time as on the provided mains adapter. So I tried it with the iPod classic but it did not charge at all not at 6V ot 12V. Does the iPod require a very precisely controlled / stabilized power suplly ?