[Brad Townsend]

Our outside fridg/freezer used in freezer mode pulls when running 4 amps. Thats 4 amps per hour. Ratings are per hour weather amps or watts. If your batteries are good and are 8D and you have 2 of them you would be fine. 4 amps per hour times 12 hours = 48 amp hours used, that is if it was running all the time. Running time depends on outside temp or bay temp and how much is in the unit. My 8 D batteries are rated at 255 amp hours X 2 batteries = 510 amp hours. You should not pull your batteries below 50% which is around 12.2 volts resting not when there is a load. So with my 2 batteries my usable amount of amp hours would be the equivalent of one battery 255 amp hours. I removed the 110 volt wire on mine so it always runs on the house batteries because one time I was plugged into bad shore power and fried the compressor on the unit because of low voltage. Ice makers are the power hogs because they run off the inverter and anything running off the inverter will pull 10 time the rated capacity. Example if an AC apliance is rated at 10 amps and is powered through the inverter it will pull 100 amps from your battery in one hour of run time. I see no problem with you running your unit if your batteries are in good shape. As I stated in a previous article a battery monitor is an essential item to have in order to understand the state of your batteries. Otherwise you are just guessing and hoping. I have been living off grid for 6 months a year for the last 9 years and use our freezer 24 hrs a day 365 days a year no problems.

Brad