All done, recharge was successful. It was on a slow 1 amp charge for 7
days. On the last day, it seemed to be completely charged. I could not
push any more current into it. Raising the voltage merely caused
bubbles due to electrolysis (at around 14.5 volts as several had said).

Reconnected the battery, and it cranked up strongly. Maybe more
strongly than before the incident Took it on several more drives,
same result. I'll occasionally measure the voltage while cranking, that
seems like the best way to measure actual condition.

Thanks to all.