Re: Optima Batteries
Optima batteries suck more than a homosexual vacuum cleaner. Anybody who works in a battery store will tell you about the ridiculous number of batteries returned under warranty because they quit working after just a year or two. They are extremely picky about charging voltage and amperage - two things boats are not very good at controlling. They are also terrible with complete discharges, the way you often would use a battery on a boat, and come with very low amp hour capacity for their size. On top of that, they're way, way overpriced.
I use Hawker AGM batteries in everything now. They provide significantly more starting amps for any given size battery (2400 amps for the battery in my truck vs 800 amps from a larger optima), they have no limits on charging current, they are much more high and low voltage tolerant, and they are designed to last more than 400 complete cycles at 100% discharge or 8-10 years. You simply cannot do that with an Optima. You can often find them on ebay for really good prices, but even retail they cost about the same as an Optima and offer much, much more. Most of the ones I have are dated 2001, and are still going strong.