Posts: 2754
Location: Mauston, Wisconsin | Comparing an Optima to a Werker is like comparing an Calcutta 400TE to a Zebco 33, i.e., there is no direct across the board comparison.
Did they tell you that the Werker is a private label AGM battery manufactured by Exide Battery for Batteries Plus? Of course they are going to push the Werker battery. Exide Battery also makes the "Orbital series", i.e., a spiral plate battery similar to the Optima. Guess what Exide say's about the "Orbital" versus conventional flat plate batteries->
http://www.exide.com/products/automotive/exide_select_orbital_XCD.h...
http://www.exide.com/products/marine_rv/orbital_deep_cycle.html
http://www.exide.com/pdf/orbital_marine_specs_and_features.pdf
Here's some background information on spiral plate battery technology.
http://www.popularmechanics.com/automotive/new_cars/1266741.html
http://www.dcbattery.com/optimacatalog.pdf
Optima is probably most well known because they pioneered this technology, and because of that, they probably lead the market against the competition.
OK- What's the big deal? Actually, I don't use the Optima's. Why? Because I can't justify the ~ $800 expense for three batteries, i.e., I just don't fish enough. If I was guiding where every day made an impact on my income, I'd use them. If I was fishing tournament's for a living, I'd use them. If I was retired and fished LOTW & Crow as much Bob Pieske, I'd use them. If I was filthy rich, I'd use them! Why, because they are probably the most indestructable marine deep cycle battery out there.
Have fun!
Al
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