Can I use my iPod Touch connected to PC even though it's fully charged?

I've already searched the forum + Google, but I couldn't find any solid answer for my question, which is: Can I use (for gaming, video, whatever) my iPod Touch connected to my PC even though the battery is fully charged?
A lot of people have already said that it's ok to use it while charging, but they said nothing about using it after the charge has been completed.

If that question has already been answered previously, I apologize.