I've also had good experiences with Walmart batteries. Could just be that there's high enough turnover so they're always fresh, but one would think that some of the chain autoparts ones would be the same and they're not always. Won't buy another O'Reilly's house brand, I've had multiple ones stop taking a charge after only a year. Napa ones seem to be good, but they're pricey (like everything else there).I have always had the best luck with the WalMart upper line of battery. I forget the name, but they get good reviews in car mags too.
Don't think I've ever gotten more than 3-4 years out of motorcycle batteries regardless of type. At least in my snowmobile it's easy to get at to jump/replace, my ATV not so much.Most of my batteries never see a battery minder or tender, the exception being my Harley and I have not see
any evidence that the tender has saved me any batteries, on my 3rd in a 2014.
I thought I'd add to this since I recently had a "perplexing" problem. My BatteryMinder1500 - which I've had ever since I posted this the first time - all of a sudden stopped with the "regular" flashing of lights which denotes it's working as supposed to. Only the top light, which is supposed to always be solid green, designating power on, was working - but it was a flash on, then flash off, but in a subdued manner.Teachu2 said..."NAPA The Legend Premium AGM Group 34 battery"...that's what I went to in my TYM once the original died and it has worked very well so far. But, mine is also kept on a battery maintainer whenever it's not being used for work. Have had no problems since it was installed.