800ah battery or bank...? If you think you have an 800ah single
battery you do not. Even if your fridge drew 10 amps thatís 80 hours of continuous use. I am certain you are running an 800 cold cranking amp start battery with maybe 80 amp hours, which is more in tune with your overnight battery drain. I would suggest you start doing some battery and electrical research
before you do something regrettable. This stuff can kill you if done wrong and youíre on track for an award
. The questions and statements youíre posting
show you need outside help or a good crash course to give you a healthy respect for this stuff.