They are the brand new: 6-44127 AF Legacy Berkshire. He opened the tender. It didn't look like there was a place for a battery in the tender (Full disclosure) when he was in college he did warranty repair at MTH in Columbia.MD. When we looked inside the tender there was a speaker and soundboard. Nothing resembling a Nicad, or even a capacitor?.
so I was a little???. Thanks for the feedback.