How long did batteries last.
We have a 2018 Cedar Creek Champagne that came equipped with:
(1) 200 watt solar panel
(4) Interstate SRM-24, 550 CCA, deep cycle 12v batteries, with all (4) hooked in series, after delivery.
(1) 1000 watt inverter (WFCO model WF-5100).
Residential 20 cu. ft. Whirpool fridge, with estimated 220 kWh annual use.
Our biggest test/experience was in Las Vegas where our RV was parked, unoccupied in full sun without any shore power and temps topping out just over 110 degrees, for 3 consecutive days. Fridge and freezer were full of food.
Note: Temp inside of RV was in the upper 90's during the almost 3 days it sat unoccupied.
After disconnecting from shore power in afternoon of day 0, batteries were 100% charged, freezer reading zero and fridge at 38 degrees.
After 24 hours, batteries were about 80% charge, freezer at zero and fridge at 38 degrees.
After 48 hours, batteries were about 57% charge, freezer at zero and fridge at 38 degrees.
After 68 hours, batteries were at 25% charge, freezer at 32 and fridge at 68 degrees.
Lesson Learned: We are good for only 48 hours with fridge keeping food frozen and cold when it's over 110 degrees. Maybe next time, I'll disconnect the 12v power to the Jensen radio and get an additional 30 minutes of better cooling to the refrigerator ......... just kidding.
One more thing - I know batteries shouldn't have be drained below 50%, but this was a real life experience, I mean experiment..... whatever.....
Hope this helps in getting a rough idea on fridge and battery potential.
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