I am renovating a 1992 Ford RV, and I was wondering what amperage I need for my B2B charger. The alternator is rated at 70A. I am planning to put one 220Ah AGM battery, with a max charge current of 0.2C (translating to 44A).
Would a 30A B2B charger wear down my alternator too quickly? What about 20A or 15A?
Any help would be much appreciated:)