Lithium for RV's has been around for a few years. I can't find my link, but one MH owner has been testing a set for almost four years and last I heard still going strong. More power, less weight.
If you have deep pockets -
Lithium RV BatteriesWhat I'll be watching with Tesla is, ... number one, quality. number two, Price. Number three, competition forcing innovation. I honestly believe the lead batteries we're using today has their days numbered.
In fact I think it's Liberty Coach who uses nothing but Lithium Batteries now.
