Do you need to have your ipod on to charge it. Can you turn it off while you charging it?
You can probably turn it off but the screen might light up and whatnot while charging like a cell phone does.
yes, you can just press the top button and it will turn off and charge on it's own.
yup, you can its actually better for the ipod to turn it off while it charges.
in fact it should charge a bit faster if its off... so yes you can.