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09-17-2011, 03:00 PM
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#1
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2 Rivet Member 
1992 36' Land Yacht
hubbardston
, Massachusetts
Join Date: Jul 2008
Posts: 26
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Where's the power going ??
1992 landyacht 36 ft
new interstate batteries
at nascar races quiet time begins at 11 pm , so generators go off
want to watch news at 11 pm , so the inverter works fine for that period
everything is off for the rest of the night , frig on gas , lights out
every morning batteries are drained down
if i turn inverter switch off , batteries are fine
wheres the power going?????
thanx
kevin
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09-17-2011, 03:19 PM
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#2
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Rivet Master 
1969 31' Sovereign
Broken Arrow
, Oklahoma
Join Date: Jan 2003
Posts: 1,455
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What is the size of the Inverter?
How much battery power do you have in amp hours?
Inverter sounds as if it powering something also there are many parasitic loads like the fridge has a control board as does the TV, radios, hot water heater etc.
__________________
Garry
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09-17-2011, 06:04 PM
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#3
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Rivet Master
2005 39' Land Yacht 390 XL 396
Common Sense
, Texas
Join Date: Sep 2007
Posts: 5,319
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Inverter is a switching DC oscillator feeding a transformer to raise the voltage to 120. It will draw current on the 12 volt side even if you are not powering anything on the 120 side. You must turn it off to conserve the 12 volt battery.
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Regards,
Steve
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09-17-2011, 06:16 PM
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#4
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4 Rivet Member 
2018 30' Classic
Ivins
, Utah
Join Date: Aug 2009
Posts: 424
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Yes, inverters do draw quiescent current even if no 120v items connected to the inverter are switched on. In the case of my small (200 watt) inverter, that quiescent current is about 250 mA, or about 4 amp-hrs overnight. No way near enough to drain a new battery. Your inverter likely draws more, but I would suspect a defect unless the inverter is driving loads you are not aware of.
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09-17-2011, 08:08 PM
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#5
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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"if i turn inverter switch off , batteries are fine"
You may have answered your own question, how long will they stay charged when you leave the I.V. un-plugged?
Bob
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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09-27-2011, 03:45 PM
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#6
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2 Rivet Member
1992 36' Land Yacht
hubbardston
, Massachusetts
Join Date: Jul 2008
Posts: 26
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think i found it
youre right,,,
i thought you could leave the inverter on 24 hours a day,,,,
i only turn it on at 11 pm to midnite then turn the off/on button off,,,if i leave the inverter on all day and night ,the batteries barely start generator,,i noticed even though i have never used them , the front tv and bedroom tv probably use power,the gas refer must ,the convection micro must ,the inverter must , and i dont know what else
kevin
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09-27-2011, 03:52 PM
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#7
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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Quote:
Originally Posted by kepko
youre right,,,
i thought you could leave the inverter on 24 hours a day,,,,
i only turn it on at 11 pm to midnite then turn the off/on button off,,,if i leave the inverter on all day and night ,the batteries barely start generator,,i noticed even though i have never used them , the front tv and bedroom tv probably use power,the gas refer must ,the convection micro must ,the inverter must , and i dont know what else
kevin
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kevin
See how great KISS works.... 
Bob
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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