One good measure of quality is weight. The heavier the better.
Jim
" JimH" jimh_osudad@yahooDOT comREMOVETHIS wrote in message
...
I am purchasing a new Group 27 deep cycle battery and will be checking out
the place Bassy suggested. Our boat does not have a high electrical demand
(depth finder, marine radio, stereo) when not running.

What are some of the specs I should be looking for to show it is a decent
battery?

TIA!