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Old 11-23-2010, 06:52 AM   #11
g1g
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Default Re: Is there an energy efficient a/c unit in existence?

OK Mike, I tried searching for your battery and couldn't find exactly what you have. Looking at other group 27 batteries some had a reserve capacity from less than an hour to almost 2 hours. Now your inverter will also require so many volts until it shuts down and as it has been said do not drain you battery more than half way. Without knowing all the facts and taking measurements I really don't know but my guess is that it would be less than 30 minutes because as the inverter draws a large amount of power and I think there will be a voltage drop to the point that the inverter will turn off, however after it is off for a short period of time I think the battery will recover a bit but not for long. Also the electronic calculations would be at 100% effeciency and no voltage drop then I'm not sure where cut off voltage is and at what power so like I said I would just guess at the 30 minute mark at the most.
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Old 11-23-2010, 12:49 PM   #12
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Default Re: Is there an energy efficient a/c unit in existence?

Mike, you might also want to go back to the site of that "7000 BTU" air conditioner unit and read some of the buyer comments. Lots of reasons to look elsewhere.
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Old 11-24-2010, 02:45 AM   #13
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Default Re: Is there an energy efficient a/c unit in existence?

I'm already looking for alternatives.
Wife says just don't go anywhere hot and we'll be OK.
Here, I thought I was the pragmatist.
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Old 11-24-2010, 02:46 PM   #14
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Default Re: Is there an energy efficient a/c unit in existence?

All is relative.

From my friend in Fairbanks; "My driveway pad is covered with ice about an inch thick, which will probably freeze for the winter after Wednesday, then I will have to live with it until spring. So much for life in the Wilderness............"
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Old 11-24-2010, 10:13 PM   #15
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Default Re: Is there an energy efficient a/c unit in existence?

When life gives you a driveway covered in ice, make sno-cones.
Happy Thanksgiving Vern.
And a safe holiday weekend to all on the forum, wherever you're from,
or whatever you're celebrating.
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