the 'amp hours' is the rating you really want to be concerned with, as this is the 'time' you have for the batteries to provide power to your system before needing recharging via shore power or generator or solar(if any)...
so a battery with less amp hour rating will have to be recharged more often, potentially costing your more money simply for the fuel of the generator having to run more often, or if you are charged for the cost of electricity at your home or rv park/campground, etc.
with any solar onboard, it will certainly add to the charging of the batteries, but most of us with any experience in solar realize that it's more of a trickle charge, not a 'full charging' such as you get from shore or generator.
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the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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