So, I took the step and bought the battery. I'm going to keep my stock battery in the bike. As soon as the weather permits, I'll rig an extra battery holder. I normally ride about 44 miles a day.
My bike a 1976 Cb550K 56,000 miles, good charging system in bike. I always use my electric start button. The L.A. rainy season started, so I'll be able to ride in about a week. It rains one week, then dry 3 weeks, this happens on and off till June.
L.A. Nomad