Use the Firewire cable and charging brick from 10 years ago. It will work like a charm. My older version 3rd gen IPOD does not charge with USB - - that is only for transferring data. Use the Firewire and it will boot up and start charging right away. Apple made an aftermarket product item M9126G/A that came with a USB and Firewire end so that you could connect to the newer computers. They are still available on eBay if you don’t have your original.