[s-cars] Lead/Acid battery recommendations

[Taka Mizutani]

What I'd like to know is why an AGM battery is or is not a suitable
replacement for a flooded cell lead/acid battery.

I know the charging requirements on a tender are different, but I don't
know of any differences in the alternators used in cars that have AGM vs.
lead acid flooded cell batteries.

Since there are only two big manufacturers of batteries in the US, I would
just get what is not too expensive with a decent replacement warranty. It's
going to be Johnson or Exide.