Quote Originally Posted by poid
get the Optima Calvo, they are excellent batteries...Odysseys sometimes fail for no apparent reason.
This is another myth that must be put to rest. We've sold literally thousands of Optimas and Odysseys over the years and to date we've only ever had two Optima and one Odyssey develop problems.

Nothing fails because of no apparent reason. Lack of care is why they die. They are heavy duty batteries but they are still batteries. They must be charged, not run down to 8-10 volts (which many people get to when they run the car's system for hours without starting it) and it must be re-charged on a bench every 12 months. I've had a Optima and an Odyssey in my own car for nine years now without issue.