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DC in Bed with Pro Power Onboard?

DANNER

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So I've been designing my overland/camper build for my PowerBoost which has the 7.2 pro power onboard option. I've got a DC fridge and plan to get a battery like a Goal Zero, EcoFlow, or Bluetti which can charge with DC.

Is there any easy way to get DC in the bed without having to pay a conversion penalty by going from DC to AC and back?

 

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With DC direct from the 12v battery, you're going to use up that battery just like a regular car and not benefit from the hybrid battery or the ProPower system. So whilst you may incur an AC->DC penalty, you have an "unlimited" amount of power. Well, limited by fuel.
I use an AC mini-fridge and charge my 500wh battery from AC.
 
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DANNER

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With DC direct from the 12v battery, you're going to use up that battery just like a regular car and not benefit from the hybrid battery or the ProPower system.
Oh, I assumed the hybrid battery was a DC source which ran through an inverter for the AC ProPower outlets.

My fridge can use an AC or DC cord for charging, but I think, ultimately, it has a DC compressor, so it seems, somehow, inefficient to go through all this conversion.

Maybe the hybrid battery is so high voltage that it needs to go through an inefficient DC to DC down conversion to be usable in any case?
 

Atlee

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Maybe the hybrid battery is so high voltage that it needs to go through an inefficient DC to DC down conversion to be usable in any case?
That statement is definitely correct. The Lithium battery is very high voltage. There is a DC to DC converter that converts hi DC to lo DC and a DC to AC converter.
 


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DANNER

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That statement is definitely correct. The Lithium battery is very high voltage. There is a DC to DC converter that converts hi DC to lo DC and a DC to AC converter.
Okay, so the 12V outlet in the rear of the center console goes through this DC to DC conversion where there are also some inefficiencies?
 

GregBC

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So I've been designing my overland/camper build for my PowerBoost which has the 7.2 pro power onboard option. I've got a DC fridge and plan to get a battery like a Goal Zero, EcoFlow, or Bluetti which can charge with DC.

Is there any easy way to get DC in the bed without having to pay a conversion penalty by going from DC to AC and back?
What were you thinking the conversion penalty was? I know enough about 'trons to just barely avoid electrocuting myself, but I always understood AC/DC conversion was on the order of 90% efficient. Not perfect by any means but not severely limiting, IMHO.
 

Atlee

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Okay, so the 12V outlet in the rear of the center console goes through this DC to DC conversion where there are also some inefficiencies?
I presume so.
 
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DANNER

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What were you thinking the conversion penalty was? I know enough about 'trons to just barely avoid electrocuting myself, but I always understood AC/DC conversion was on the order of 90% efficient. Not perfect by any means but not severely limiting, IMHO.
Well, there's also the initial conversion from DC to AC that probably cause some inefficiencies, right?
 

GregBC

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Well, there's also the initial conversion from DC to AC that probably cause some inefficiencies, right?
Ah, yes, certainly true I'd imagine.

 

 
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