I want to know the same???!?!

Went there today they said they don't because they don't last over a year

Have in my boat sense '09.. Run them all day!! Knock on wood!!

My aluminum boat has 2 goin on 4 yrs

I think refmonds is talking smack trying to push whatever they sell every salesman will say whatever brand they sell is the best

Check a consumer reports

These are supposed to be pretty good
http://www.lithionicsbattery.com/marine.html

I can run three trips on my Optima's, the set i replaced was 4.5 years old,and only one out of 4 was bad.

Hey hey hey!!! I'm a salesman. Lol I catch ya drift. So big momma over Optimus Jared?

Every1 has there preference I went thru 7 optima in one yr due to them bn under the bow they wouldn't take the beating kept burning up granted I'm rougher on equipment than any1

Yea says the half the lower unit in marsh near spricers. Lol. Brights use is its the start of a reef. Big momma huh? Spelling correct?

Yeah.. They should be !! I paid $9 for 4AA battery's , I would not want to even guess what these would cost.
But.... I may gain a MPH ! :D.

Optimas are actually AGM battery's "Absorbed Glass Mat" Which Typically are 10 to 15x more vibration resistant than other battery's
I have Optimas now BUT only had them for two years, so I can not yet say they are the best.
I will say that if everyone put a Good onboard charger (that is designed for the type battery you have) 90 percent of "battery" problems would go away. I know this for
experience.

What kind of Onboard charger you run on them Optimas?

Anyone found out who makes these big mama's? No info on web

Ding!
That is correct and I learned the hard way as well!!
I have interstate batts in my boat now but that's only cause they put em in when building it, next will be AGMs again

Check the reserve capacity minutes on optima vs conventional battery only 60 to 75 percent capacity as big mamma only advantage spill proof and cost twice the price

Want'a say they're made near Shreveport. I'm only about 5500 miles from mine. If I were home, I would look and see if there'S any info.

I have a Bass Pro XPS I series charger , it has settings you can change for all type batteries .
AGM s do typically have less reserve and are more expensive, you are correct . But there are other advantages , like weight savings , which was important to me. Also extreme discharge will not hurt an AGM like it will a wet lead acid battery.

Found this , but no web site.Attachment 41576