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Old 05-25-2019, 02:55 PM   #1
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12 volt 110 volt switch for cooler

I know regular rv refrigerators have an internal switch that will go from 110v to 12v automatically if the 110 drops so it keeps on running. I have a 12v cooler/refrigerator and looking for an item that will mimic the dual power that so I can just plug the cooler into a 12v slot of a "box" that will switch it so when I am on shore power, it runs off the 110v instead of the 12v without me having change plugs. If you know what this "box" would be to buy, let me know.


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Old 05-25-2019, 07:50 PM   #2
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If your rig has a 120VAC-12VDC converter (i.e. it can charge the batteries from 120VAC) then you don't need to do anything: plug into 12V and when you are on shore power the converter will provide the 12VDC.
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Old 05-26-2019, 11:42 AM   #3
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Yep, A standard RV power converter will do it. There are lots of newer options though and some go by different names. Many inverters nowadays have this capability (3 stage or multi-stage DC charger when on shore power), some are called powerverters.

I nominate Scalf77 for the best explanation and advice on this. Hopefully he will chime in.

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