Today is May 14, 2009 Purchased a 6Volt Optima Battery in March of 2007 for around 120 dollors. After 2 years the battery will not hold a charge. I contacted the battery supplier, Cell Energy Inc for warranty. They said the warranty was expired that I had purchased a used battery. I just about lost it as I purchased a NEW battery. I am not sure how Cell Energy pulled that off however I was denied warranty. I went to Optima in Colorado and all I received was a sorry note on my email. I can not believe that you can pay 120 dollars, in 2007... read full review »