My lithium ion battery usage was a five-year test under very “real” conditions. While we did not abuse the batteries in any way, we also did not “baby” them at all. My theory was they had to function in all “RVing” conditions ranging from being covered with dirt/dust from Canadian and Alaskan construction to lots of rain mist everywhere. In cold and hot weather, they had to function. The batteries took us to Newfoundland, to Alaska (twice), to Yuma, and to Key West. They took us to EVERY state (okay, 49 of them), plus 10 Canadian provinces and one of their territories—and never failed us.
Ron
About RVing