Like everything else, changing from old faithful, & cheap, wet cells to something else simply depends.
LifePO4s look great. They are lightweight. They outperform everything else. They have a service life of 15 years plus. They are still quite expensive.
I have a 2007 5er which at the moment is about halfway through the life cycle of it's second AGM battery bank. The first was good for nine seasons. By the time this AGM needs replacing the trailer will be almost 20 years old & have well in excess of 100,000 miles & 2500 nights use on it.
It will be ready for retirement to some seasonal CG, if not the salvage yard.
Can't justify the expense of LifePO4 on that.
