dapperdan wrote:
My goal is to try and keep our 2 6 volt batteries close to full while parked at our storage lot (with no electricity). We have a residential fridge which, with an inverter will run a couple of days on our batteries or so the salesman said. I just want to be able to fire up the fridge before loading it up for a trip and NOT discharge the batteries too much, my thought is a couple of 100 watt panels will do the trick.
I think salesman lied. In 2 days a 12-15 cu.ft size residential fridge with inverter will suck your 225 AH dry. I wouldn't count on it running more than 24 hours before SOC drops by 100 AH or to 40-50%.
2*100W solar could, under ideal conditions, contribute 50 AH during the same period. So your bank would drop to about 70% in one day. Under less than ideal conditions solar won't contribute much, so the bank will still drop to 50-60% in one day.
