Marine Batteries
 

I already know I'll need to replace both of my batteries for next season. I usually just leave this to my marina's service department, and usually pay way more than I should- not this time! Any suggestions for buying? Does it make much difference or are they all basically the same? Thanks for the help.

Re: Marine Batteries
 

The right size and type battery is important. You should have sealed, marine-grade batteries. Most common sizes are group 24 and group 27 starting batteries, and gel batteries are MUCH better than lead-acid.

Re: Marine Batteries
 

I HAVE THE DEKA AGM'S, WEST MARINE SELLS THEM AS WELL REBRANDED, AND IF YOU CAN WAIT FOR A SALE YOU CAN SAVE BIG BUCKS.

Re: Marine Batteries
 

All batteries are not the same! Even within Johnson controls who makes a huge number of brands at numerous price points, the quality ranges from top of the class to depths of Bowery gutters in bad times.

I also have group 27 Deka AGM, deep cycle for house and starting for starting. Bought them from a battery shop for nearly half of the West Marine price.

Thus far I've had better luck with AGM than gel, but I think the manufacture quality may have more to do w/that than the type.

If you have a newer motor you may have to go up to a Group 31 to get desired cranking amps (e.g., I think Optimaxes require at least 1000 cca).

I think a key to longevity of any battery is that it be used or charged regularly. Even Concorde and Rolls batteries will fail if they just sit...

Re: Marine Batteries
 

I remember one of the CSC members becoming a marine battery rep, maybe if someone remembers his name they can provide him as a reference and he can help you out. Not sure about his location.

Re: Marine Batteries
 

I replaced mine last year with Optima blue tops and have had a Guest on board charger.

Re: Marine Batteries
 

The AGM can be mounted pretty much anyway way you want to mount them; upright, on their side or end and I believe even upside down.

Re: Marine Batteries
 

Whatever battery you choose, make sure to have them connected to a "smart charger" all the time, one that matches your battery type. I use West Marine batteries and adding the right charger more than doubled the life of the batteries.

Re: Marine Batteries
 

do u guys leave your batteries hooked up to a charger all the time when not in use?

Re: Marine Batteries
 

Yes