He Dean By the calkulation for the price by AH you have to think abaut the time foe working in good contitione the AGM batteries maybe 5-8 years Li maybe 10-12 years ( we dont now realy ) I think two month agow to change to LI in this winter but it seams to dificult for my an now i thange by a new charge system victron multiplus , victron solar charger , and new agm Batteries an then i can change in 5 yaers by LI Batteries
