I also agree with pizzaguy's comments, although I think he was a little blunt! You think! My experience is like others - nearly every car battery I've had in my vehicles over the years has lasted somewhere between 4 & 5 years. And that goes for both OEM versions & after-market. Battery life is a function of use. And so the typical car owner drives 12k-15k miles per year and subjects the battery to thousands of car starts in 4-5 years. And the car starts drive the battery wear. So we all tend to get the same battery life. Some do better; some do worse.

I replaced my XFire's OEM (VARTA) battery earlier this year with a Duracell Ultra 48H6 from Batteries Plus. Cost me $145 & change. Would have bought the Walmart Everstart MAXX but both stores near me were completely out of the XFire H6 battery. You might want to consider either Costco or Sam's Club for a car battery. Their prices are usually reasonable. You'll find that, depending on who's battery you buy, the fitment in the XFire battery tray might be slightly off from the OEM VARTA. Batteries meet a specific spec for capability, but the allowance on cases can be a little different. Never really understood this fact, but recognize it exists. So, if you scan the various posts on the forum, you'll see where folks have some experience on what they did to get the specific aftermarket battery to be securely mounted. The Duracell I have is slightly higher than the OEM battery. So I modified (bent) the holddown clamp slightly so it wouldn't be applying excessive force to the nearest edge.

Lots of folks look down their noses at the Walmart Everstart battery. But I've used them often over the years and have it in a couple of my other vehicless right now. And as folks have said, they last about 4-5 years.

No matter which battery you buy, they all come from about 3 or 4 battery manufacturers. They simply use a different case and maybe build to a specific spec depending on the retailer. Trust me on this - Walmart is not in the car battery manufacturing business! They buy it from somebody. And if I was a car battery manufacturer, I want that contract!