Are lithium batteries worth the cost?

Durb wrote:

Let me get this straight. Progressive Dynamics, a leader, designed a convertor for lithium batteries that isn't as good for lithium batteries as their non lithium convertor? What if I just unplug the convertor between trips, say three weeks? I do disconnect the battery during the off season.

That is correct. It is not going to destroy your battery, but at minimum I wouldn't leave it on while you are not actively using the camper. LiFePO4 batteries don't need to be float charged at all, and certainly don't want to be float charged at the very top of their voltage range.

Being a 'leader' an industry that is not exactly known for its technical prowess doesn't count for much.