Yeah, most of my frustration is directed at myself. It's possible that I have a spare battery, but don't remember the safe place I tucked it away 3-5 years ago.
I bought 2 batteries, and am set now for quite awhile. The new spare is in the drawer we keep AA's and AAA's in. That was my husband's idea. I was trying to come up with a new "safe" place that I'd remember for years, as if my memory is likely to get any better.

I could have taken the photo with a loooooong exposure using the modelling lights, but I just felt too angry with myself to go ahead.

Hope to get into the darkroom to develop the negs in the next day or so.