It is a "T" battery. YASUSU or however you spelll it. I know I was checking the charging system. I wanted to see if that part of the system was ok. 13.5V was on the meter. Good enough with the headlight and ambers on. The battery is an '04, so its not old. One cell under the POS terminal was a bit low so I added distilled to top it off. Charged it for 2 days, then tested it starting each day off the charger for a week. No problems, fast start. I will watch it over the fall and see what happens. If I get the least bit skeptical, I will just replace it with a maiintainance-free one.
2 Honda Shadow Spirit 1100's - 2000, 2006