I switched to Optima gel cell batteries after 2 incidences that destroyed paint. I have had great luck with them, my truck however just sits and I've warrantied it's Optima battery 2x's in the last 2 years. Then within a week of the truck I had to buy a new optima for the Cuda, that one was about 10 years old, and so was the one it once it replaced many years ago.
Napa's policy is the 3 year warranty starts over upon replacement. I though that was an optima thing and got the cuda's battery at an Autozone. Apparently they don't have the same policy?
As said above, I`m pretty sure Interstate doesn`t manufacture any batteries. The longest lasting batteries for me have been OEM ones that came in the car. Any replacements never seem to last as long.
Both of my kids 2013 Darts batteries were warrantied at just about 3 years
