CSG, Got the bike back today with a brand new Yuasa battery. As Draeger so aptly put it, "It's always the *******battery!" And apparently it was exactly that. The shop said the old battery had a fatal fault internally, and that's all they replaced. The bike is charging properly now, and seems fine going down the road. Of course, with the fee for the tow, the bill came to $180, so live and learn, I guess! Thanks to all the contributors on this subject.