Hi Gary,
I have found 2 places where one can obtain group 27 batteries at a
reasonable price. Costco has some but so does Walmart, and for a little
less money too. Warranties are the same. Costco does have a "group 27
rated" gel cell that will work even if the battery compartment gets
filled with sal****er. This will completely kill a flooded cell. It
might be a thought to use one of these for your starting/transmitter
battery. I have an independent battery system for my transmitter and GPS
powered by an AGM motorcycle battery. It is diode isolated from the
primary system, but gets a continuous charge through the diode.

If you wish, I will send you a electrical scematic of how to hook this
puppy up.

Capt Frank

Gary Warner wrote:

So from replies to another thread I decided on
a pair of flooded dual-purpose Group 27 batts
for my run-about. They will be on an A/B/ALL
switch with a battery combiner to be sure both
batteries get charged.

I'm wondering which brands are better or which
are worse and to avoid. Also what stores to check
out for best prices.

I'm in the Mass / CT / New York area.

Bill mentioned Costco - so maybe that's where
I'll look.

Thanks,
Gary