Bests & Worsts Reviews from Amazon

Over the past 5 years I have purchased 3 Optima batteries. The first one lasted just past it's warranty date and then failed. It was a red top. The last two were very expensive blue top marine deep cycle/starting batteries purchased at the same time and put in the same boat. The batteries operated through a Perko switch set on ALL. They charged together and discharged together. They are just now 37 months old. One has failed completly and the other still works. The warranty is 18 month free replacement and 18 month prorated. So here again no warranty help. Most battries that you purchase for $200+ have a 48 or 60 month warranty. Optima does not. The company would go out of business if it had to honor warranties that other battery manufactures offer. Optima is just a lot of hype. I have learned my lesson and will never purchase another Optima battery. Optima is owned by Johnson Controls and moved their manufacturing plant to Mexico. In Mexico they are not held to strict enviornmental laws and employ cheap labor. They now offer only a 24 month warranty, period. I guess they know how long their battery is good for.