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Old 12-20-2015, 06:52 AM   #29
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You would have to buy an inverter with enough capacity to charge the vacuum. Compare watts. I would think a vacuum would drain the coach batteries more than you'd like, but checking the watts will tell you more.



Gene

Of course I could use my inverter, but that would be very inefficient since the vacuum wall wart converts the AC into DC anyways. I was wondering about a direct DC to DC adaptation.


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Old 12-25-2015, 12:04 PM   #30
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Of course I could use my inverter, but that would be very inefficient since the vacuum wall wart converts the AC into DC anyways. I was wondering about a direct DC to DC adaptation.


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If the vacuum runs on DC internally, you would have to find a work around like a direct connection to the vacuum innards from the coach batteries through a 12 v. receptacle. Perhaps showing my ignorance, doesn't the vacuum motor run on AC requiring an internal converter from the vacuum batteries to the motor? I assume (another possible stroke of ignorance) the other parts of the vacuum run on DC. I may have gotten totally confused by converters and inverters compounding inefficiency as power is changed back and forth from AC to DC to AC, ad infinitum, until nothing is left but heat. I think I'd better get a broom.

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Old 12-25-2015, 03:17 PM   #31
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We have hardwood... And need new vacuum... Thinking of iRobot... But would not do well in 34' I think...

Love our Dyson upright at home.... Been resisting the urge to get for AS... I am grateful they don't offer an aluminum shell one..... Aren't you??��
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