will frig drain battery
I stopped at my daughters place in Jax Fl on way south. Have my frig running on gas. 19' TT with one battery. Battery fully charged before leaving fri and should be full. No usage other than frig on l...
Forum Discussion
riven1950 wrote:
No usage other than frig on lp and maybe CM detector.
Question : Do it need to worry about battery going down in 2 and 1/2 days?
CO/CM detectors and smoke detectors are usually on their own batteries. It's LP detector that needs 12V. Though each rig is different.
Yes, the frig alone "might" drain 90 Ah battery to dangerously low level (which is commonly considered 49%) in 2.1/2 days.
Frig drain depends on the frig.
My 6.3 cu.ft Norcold draws 0.4A when running. So, at 50/50 cycle it would drain 5 AH over 24 hours, or 12.5A over 2.1/2 days. Plus, LP detector, plus radio on standby, plus inherent self-discharge of the battery - it loses charge even when completely disconnected. So, with my modest frig drain I still lose about 10 Ah a day in total, or 25 Ah in 2.1/2 days. So my particular situation is not threatening.
Some frigs drain more, but seldom over 12-14 AH in 24 hours. Some very old LP frigs with mechanical thermostat don't drain anything at all.
A tip - if it's a 2-door frig, disconnect the defroster that keeps the wall between the doors warm. Dometic should have a switch for that. Norcold doesn't, but there are ways to cut it off. See this article
