Very expensive!
Mark: I have heard nothing but good about Optima batteries. They are very durable. This setup that you are looking at is two of their batteries hooked together with a "manifold". For $350 you are only getting about 110amps. If you compare this to any other solution (regular AGM or Gels) this is even more expensive. The West Marine Gel Group 31 are only about $230 for 97 amps. These are good batteries. I got 10+ years on my last set. The West Marine AGM's are $220 for 105 amps. If you catch the West Marine Gel or AGM's on sale, you can get them for less. They are always have 10% off sales and then sometimes they also have a sale on the batteries too plus the 10% off. Can I ask what you are trying to achieve?
