Q: I have a new 4G 20Gb iPod. I have read many myths and theories about how to get the best battery life out of my iPod. Is there a clear answer to this question:
When I’m sitting at my desk at work listening to my iPod through speakers, I am next to an AC outlet; it would be easy for me to plug my iPod into this outlet and keep it charging. Is it better for the battery to leave it plugged in like this, or does it not make a difference?
A: It’s true that understanding iPod batteries can be complicated, especially because there is a great deal of uninformed opinion floating around. The best place to go is Apple’s FAQ about iPod batteries; this document says, “The battery stops charging when it’s full. Leaving it connected won’t charge it any more. It’s perfectly OK to leave it connected so it can charge overnight, for example.”
To learn more about making your battery last as long as possible, check this Apple document, which gives you tips on getting the most out of your battery.