It's all about quality control. That's why one person can have a good experience with Optima and the next 5 people have the usual bad experience. Your individual chances of a good experience are low.
Typically, when batteries are discharged well into the single digits, there is a draw of some kind, which can be a bad fuse...
O-Jim
Just replaced Three (3) yellow tops at work, all 3 with date of 07/09 June 2009, these sit for extended time and all three were trickled charged before we started (wanted) to use the trucks, the batterys just gave up, if it had been one, oh well but three at the same time, all were purchased at the same time.
However my red top purchased in 2002 sits for several months and fires right up no issues.
A 70 month warranty on a Deep-Cycle battery? Wow. The only ones I've seen from Interstate were either 6, 12, 24, 30 or 36 month warranties. Looks like things are improving is some areas at least.
Most all the other companies I've looked at (been awhile since I've compared though) were either 12, 18 or 24 only for their deep-cycle units. I guess they're pretty confident in their stuff.
Your Red Top Optima has a 72 month warranty though, so it's even better than the Interstate you're talking about. But here though, some Interstate warranties are 75 and 85 months for regular starting batteries, so they've got some advantage there too. Warranty has never been my big selling point between brands though. Within a brand, sure, but not so much for comparing brands.
Every manufacturer I've ever dealt with had plenty of variation between models and types though, so it wouldn't surprise me that's at least within the normal variations between manufacturers and models. Even Interstate can't offer the same warranty on every battery model.
And before you discard that Optima, I would stick it on a modern charger (one that has an automatic shut-off and trickle feature) and just leave it for several days. That alone has fixed several "bad" Optimas that I know of.
Paul
airbur, I'm sorry to hear about the problems you had with your YellowTop and I'd like to help. Was this battery in your daily driver and if so, what were the circumstances surrounding your issue? Many battery chargers will not recognize or charge any battery that has been discharged below a minimum voltage threshold (usually around 10.5 volts). This is a charger issue and not unique to Optima. It is possible that your YellowTop can be recharged, using this parallel charging technique.
Jim McIlvaine
eCare Manager, OPTIMA Batteries, Inc.
www.facebook.com/optimabatteries