Battery Reccomendations

[Beachbummer]

The boat pounds a lot, and many of us use it very seasonally. Glad it works for you, but given the 2 options I prefer the cheaper battery for now. Good to hear they last a very long time!

 

[typhoon]

OK, well now my interest is piqued - a few questions for you:

- What batteries do you have in your boat?

The OEM batteries from Yamaha


- Do you float often and crank up the tunes or put other stress on your house battery?

Absolutely. Just about every trip out



- Do you have extended periods of high throttle on the way back to your marina so the batteries have sufficient time to charge before it is put away?

It is a 45 minute run from my dry stack to my sandbar of choice. I keep it between 25 and 30 mph for the most part.

From what I've read on the interwebs, you can damage a standard lead acid or AGM battery if they are consistently left in a partial state of discharge:

Do you agree with this or do you have some expertise that would lead you to believe otherwise?

Just my experience. I have read many things in the interwebs, and this site specificall, that my experience disagrees with. It is one of the reasons i favor the Hull Truth these days. There are less fresh water part timers talking about stuff they don’t understand.

Signed,
Elderly Lake-Folk Wife

 

[WiskyDan]

There are less fresh water part timers talking about stuff that they don’t understand.

@FSH 210 Sport has worked at a high level in the electrical field for most of his life and he’s “talking about things he doesn’t understand”?? Does this sound at all logical to anyone but you??

It sounds like you have no idea what you’re talking about and since you can’t refute anything logically you just want to hide behind some random guys on a different site - good luck with that.

I think I’m finished with this conversation - the replies are giving me a headache.

 

[Ed255fsh]

My AGM's for my cars run about $300 if I buy them myself and install, add another $100 if I take the car dealership up on their offer. I'm looking at doing a dual setup with another FLA that was offered to me, and replacing with 2 AGM's after current projects and purchases are funded and installed. I've heard from someone here doing lithium for their boats, and that price made me throw up in my mouth a little bit. My FLA and the one offered to me have been taken care of well, so if I can put off dropping $600 for another year, that would be great. If I can put that off another year, I'd be looking at Northstar AGM's, which are around $400+/each at this time. There's a high likelihood that I'll end up doing that.

The AGM's are supposedly going to give you 3X the life. My experience thus far in all the cars I've had is between 6-10 years, if taken care of. I can go direct to an Interstate battery dealer for free install vs the car dealership, and they also will check it for me periodically (it's between the house and work, so not out of the way for me). The 6 years is ongoing, and the wife's car is 8-9 years. The 10-year is in the truck that my kid now has, with no issues. I expect him to need to replace it, since he doesn't do squat to it. Past AGM's were easily 8+ year batteries, but I'd have to track down those cars to see how much longer than that.

I expect when I go to AGM's in the boat, either I'll die before they have to be replaced, or they'll go with the boat if I ever sell it, at the cost of a little maintenance and care.

I have 255 FSH. It came with 2 x GRP 24 batts. I1 start 1 house.
I replaced house with a 4d Agm mounted under console. Ran new cables to engine compartment. Then replaced the start with GRP 31 agm start/ deep and the hold tray.
Then installed pro mariner charger.
I'm for the biggest batt that fits and you can afford. Also i leave smart charger on when not using boat.