I'm interested in what size batteries do most of you guys use. It seems to me like I can't find many batteries to last (and I mean say strong all day long) for more than a year, year and a half. I keep them charged when I'm home and I take the boat out 2-3 times a week typically
Any battery is only going to have a limited amount of "cycles" in it. (charge, discharge and recharge)
I had a gelcel group 31 that lasted 4yrs as my cranking battery, still worked when I sold my boat and is still being used by the guy that bought it.
Trolling batteries, I just plan that I'm going to have to replace them every 14-18 months. (I've tried every brand out there and they all seem to be around the same life cycle)