Speaking of batteries, I've read (several times) that starting
batteries shouldn't be deeply discharged; it ruins them. I assumed
that a starting battery would be shot in no time if used as an aux
battery.

But I've recently read that what actually happens is that the life of
the battery is shortened, from five or six years to three.

Not that I would take advantage of warranties, but finding an
inexpensive group 41 battery and using it as an aux battery sounds
potentially economical.

Is the shorter-but-still-measurable-in-years story right?

Mark
'82 Westy