Experience with refrigerators

[chappymonster]

Hi everyone

I have been wondering about how long I can have my refrigerator turned on aboard my Maxum 2700SCR without flattening the batteries. The manual is very basic and only recommends leaving it on set on 1; the lowest setting for overnight.

My batteries are new. Does anyone have any experience with this? How many hours, what temperature setting etc???

Cheers

Jim