Thanks for the info.

I have been going through a number of batteries the past year. Recently, my two 5 year old Optima Redtops in the Jeep bit the dust after I inadvertently left the key on for a couple of days and drained the batteries. I could not revive them... Two Yellow tops are now installed.

And, last fall I went the rounds with the 6-volt wet cell deep cycle batteries in my motorhome (8 batteries in four months) where they were being cooked due to faulty charge controller. I now have a new module that senses battery temperature and shuts down the charge when internal battery temps increase. Four Interstate 6-volt deep cycle are now installed.

I had an Odyssey AGM in by Dodge that didn't make 3 years. So, back to Sears Diehard where it is easier to get warranty service.

And, I am down to the two starter batteries on the motorhome that will need replacement within the coming months.

So, I am looking for durable batteries...