Success (I hope).
In Emeryville, I stopped at a Best Buy and got one of those universal laptop power cords. I’m not sure I found the right tip in the box, but it fits, and the battery is charging as I write this. The tip doesn’t fit quite as snuggly as my regular power cord does; let’s hope I don’t damage the socket it’s plugged into.
My goal for tonight is to get caught up on my e-mail and FtB reading. Tomorrow night I’ll write a proper trip report.