[macintux]

~15 years ago I was visiting New Orleans, and I had an old Canon 1D DSLR with me. I was a little nervous about leaving my camera batteries charging in the small b&b where I was staying, fearing I'd unintentionally destroy a historic house.

[tzs]

If the internet is to be believed that would have used NiMH batteries. Those are a lot less likely to cause fires than lithium based batteries.

[macintux]

You're correct. I didn't know much about the various battery technologies at the time, but they were pretty old batteries.