JUST put a set of D27M in my boat fit perfect and after seeing what a set of NON-sealed batteries do NEVER again with anything but a sealed battery.....TRUST me go with the Optima's

I think I am going on like my 7th season w my optima blue top. It never has let me down. The spare has never been used yet. I keep thwm both charged all the time and never had a problem. Optima used to be made in colorado i think .. Now mexico?? Never tried a new blue top yet, But I will/ I would rather suport north america, than some cheap cosko anything. But thats me. Don't they get all their chit from china?.. .

Interstate

AC Delco Voyager, hydro eye comes in handy for quick status of charge. I got 7 years out of last set, changed them only as a safety precaution.

All I can say is that what ever you choose make sure they are a sealed battery.....BZ

Most auto batteries are made by just three manufacturers, Delphi, Exide, and Johnson Controls Industries. Each makes batteries sold under several different brand names. Delphi makes ACDelco and some EverStart (Wal-Mart) models. Exide makes Champion, Exide, Napa, and some EverStart batteries. Johnson Controls makes Diehard (Sears), Duralast (AutoZone), Interstate, Kirkland (Costco), Motorcraft (Ford), and some EverStarts.

with that said Im not taking away from Optimas but I think its a waste of money. Like the above guy mentioned batteries are made by a hand full of batterie manufactures. All the batteries that I have had have lasted 5-7 years with no issues and have been reliable. My thought is even if I need to replace a battery in 2-3 years fine because I can buy 2-3 sams club batteries with the same specs as optimas for the same price as one optima.

Again Im not taking away from Optima or people that buy them, but sometimes peoples specially guys shop with their egos and what cost more or is bigger must be better. Buying the most expensive item doesnt all mean its the best or the best purchase overall.

All Batteries are not the same. Some are wet cell and some are AGM which is Absorbed Glass Mat. The AGM batteries cost more and do last longer, Not the Same.

You may be right, but Ive had interstates last 5 years and perform fine at the fraction of the cost of Optimas. Again I dont know care what label, cost, brand, if they work and dont make me go bankrupt I dont really care. Like I said people shop with their ego's way to often. Hell I had the most expenseive golf cart batteries man could fine, they broke in two years I bought cheap Energizers and theyve lasted 4 years in the golf cart. I think a lot of how long a battery last and performs is the mantenance you perform, do you check the water levels do you constantly drain and recharge them, do you take them out of the boat in the winter, etc etc. I have never spend more than 90 bucks on a battery and they have lasted me never less than 4 years.

That is true but is it like the LCD screens for TV's?

Only a couple make them but each "Customer" has different specs, so the end result is not the same.

Just wondering if batteries are like that.

I like the AGM batteries as well.