Hi Coctailer,
I am not here to sell you on our batteries. However, a google search of any battery or any product for that matter will turn up complaints. Remember, anyone can type anything these days and somehow if it shows up on google it is fact. In the thread that ironhippy attached, if you read through the thread you will find he had 4 batteries fail. Really? More than likely, he had alternator or wiring issues and not a battery problem. The discharged batteries were symptoms not the underlying problem. So goes with most threads I find on the internet. More than one “Dead Optima” was fixed once the owner understood proper charging methods for the AGM style battery. Then you always have someone talk about overseas manufacturing and poor quality control. The fact is we do have a state of the art manufacturing facility in Monterrey, Mexico. It has the latest in technology and our QC is better than it has ever been. We find that a lot of the returned batteries we get are simply deeply-discharged and once properly recharged are fine.
A couple other general things I would like to point out about batteries in general. Some manufacturers do not use 100% virgin lead (they opt for the cheaper recycled route). We have tried that too in product development, but found the recycled lead just did not meet our standards.
Depending on your application, such as stereo plans or winching requirements, you may need a deep cycling battery. Our YellowTops are dual purpose deep-cycling batteries and will work fine. Remember though that not all deep-cycle batteries are dual purpose and may have a reduced CA rating.
It looks like you are doing your homework before your purchase and I think that is great. Just be sure you have the facts and not just internet opinions before you perchase.
Thanks,
Bill Howell
eCare Manager, OPTIMA Batteries, Inc.