Cordless Phone Battery

We have so many different kinds of phones in our home. There is one located in every room just about. The phone in the family room is a cordless. It is starting to act up on us. It doesn't seem to hold a charge anymore. I think it is due for a new cordless phone battery. That would probably fix the problem. I don't like losing a call because the phone dies right in the middle of talking with someone. We'll have to check into that soon.