Started w/ second battery & inverter from harbor fright not worth the trouble
Now start w/ beverages cold, freezer full of "Blue" ice blocks, safety strap locked, has traveled 1K miles + overnite & beer is still COLD
. However; have never had frost build up problem in freezer section; but, wife hearing of de-frosting water damage now has me packing an old bath towel under beer in "dorm" refer.
Sure wish I could remodel allowing larger outdoor Refer, haven't thought of away; so, got a portable ice maker . . .