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Originally Posted by daveb
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Originally Posted by BajaSportsmobile
I could be wrong, but I would assume the they are always working in DC and only convert AC to DC when AC is available.
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Yeah I think that is correct and assume the reason they are more efficient in the AC mode is there is a stable voltage supply when converting AC. I could be wrong but on battery power it runs between specific voltages and at a lower the voltage the compressor has to work harder. It would make no sense to invert DC to make an AC compressor work.
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Dave, I've been meaning to look into these small refrigerators to see how they work. I can't imagine the motor works on both 12 Volt DC and 120 Volt AC, so I assumed they likely use a 120 Volt AC motor and then invert 12 Volt DC when needed. Why do you think this wouldn't make sense?
It's about the only explanation I can see to explain why they would be more efficient on 120 Volt AC.
Hybrid Mode
