Long Lived Batteries, Hot Climates, and AGM Batteries
First off, I enjoy reading about how many years people get out of OEM batteries in mild or cold climates. It makes me jealous, actually. Here in the desert southwest, where weather tends to be warm (ghastly hot, really), battery life is measured in months. If we get 24 months out of an OEM battery, it's worth celebrating and telling friends. An aftermarket flooded-cell battery will go 12 to 26 months, regardless of who made it or how long the warranty is. What you have to do is pick the place where you want to buy batteries from forevermore, and buy the first battery (or battery pair) there after OEM, and keep going back when they expire for the pro-rata replacement.
I got 13 months from the OEM batteries in my own 1996. We got 16 months out of the OEM batteries in my office's 2004. 5, but it gets parked under cover.
The worst thing is that flooded cell batteries here tend to quit with no warning. I can leave the house and all is well. As I walk out of the Safeway with 10 gallons of ice cream in July, the battery will be dead. No warning. Since I tend to go places where cell phones don't work, it's a 20 mile hike in 128F heat to get where the cell phone might work, and the extrication tow will cost $800 if anyone will respond, I wanted to buy batteries that might actually last more than 24 months and die with some dignity and warning. I also wanted AGM batteries that wouldn't corrode the battery cables and slosh acid all over the place.
So I bought a set of Optima red tops, and I got 5 years out of them! I got four more years out of them as ad-hoc deep cycle batteries on my trailer. The next set of red tops on my own truck failed quickly. The red tops, made just before the Optima factory was moved to Mexico, on the office's truck, are still in use.
This thread over at the Chrysler Minivan forum has some interesting commentary, opinions and observations on where Optima battery quality has gone.
OPTIMA Batteries - Alternatives, Whatdya think? Have a look and make up your mind for yourself. I use only Deka, Odyssey or the Batteries Plus house brand of AGM non-spill battery. For me, I simply will not risk my life using Mexican-made Optima batteries any more. I know that our trucks and both my PT Cruisers were made in Mexico. That's not the issue. It's the quality. If Optima gets the quality back up, in my opinion, I'll reconsider. All this is, of course, my opinion.