Donna, the word "charger" didn't appear in the question; just the letter C did, so it was confusing till I read more of the question. Yes, you can use the optacon II on charger only. I did it quite a lot. In fact, there is a small plastic piece that shipped with each optacon II that covers the battery terminals on top of the machine when the battery isn't plugged in. Mary to view the list archives, go to: www.freelists.org/archives/optacon-l To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject.