Optima is a great battery for using in a Jet Ski or a speed boat bouncing on the waves
by group size they are way low on total amp hr capacity
and a BAD choice for dry camping deep cycle operation
#1 .. is an expensive bank of heavy duty 2 volt cells..not a good choice for RV use {weight problem}
#2 .. is heavy duty deep cycle AGM batteries
#3 .. is flooded cell golf cart batteries batteries
then solar ARRAY size... when used for extended camping, it needs to replace at 90% of daily use, then you can go a couple of days of no generator
then do a long run for recharge
with a small battery bank and small size solar
you MUST run generator several hours or More per day in the morning
get batteries up to where the solar can top it off,
you have been seriously under charging the batteries
every day using more power, than you replace
you need to balance your use, charge more or use less
