Originally Posted by Big Zig
I use a ProSport20. It's a three bank charger/maintainer. Has the option of battery types, but like you said, it's a one time decision. I used to use a portable charger, but since I went with the on-board, I'll never go back.
Go fishing, come back, plug the boat in. Next trip, unplug boat, go fishing. Repeat as necessary.
I got tired of pulling three batteries out of the boat every winter, went with the Pro Sport and they haven't been out since.
If you are in the market - I see the newer chargers (BPS) have a selector for the different type batteries (acid vs. gel), which would elimainate a problem with the ProSport. (Of course, how often do you switch battery types?)
GABoy - I need to clarify that not all on-board chargers are maintainers. My ride sits for three-four months out of the year due to our winters. I went with an on-board that I could keep plugged in for this extended time frame. Your situation may not justify this option.