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Old 12-04-2015, 12:22 AM   #1
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Small portable inverter to save electricity

Is there any battery saving advantage to using a small portable inverter plugged into a 12 volt receptacle in an RV?
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Old 12-04-2015, 12:30 AM   #2
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Versus what?
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Old 12-04-2015, 01:36 AM   #3
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Versus using the RV's built-in inverter. I hear it drains batteries 10 times faster than using 12 volt appliances.
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Old 12-04-2015, 07:46 AM   #4
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What are you going to plug into it?
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Old 12-04-2015, 07:55 AM   #5
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It all depends on the load as to how much it draws.
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Old 12-04-2015, 08:12 AM   #6
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We carry a 400w Xantrex inverter. Use it for charging small 110V only things like shaver, tooth brush, camera, etc. It draws about 1-2 amps with no load. The 1500w built-in Xantrex in our old motorhome drew about 7-8 amps with no load.
Plus I can carry it in the Jeep to recharge the camera, etc. during the day and on trails.
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Old 12-04-2015, 09:57 AM   #7
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I don't know about 10x faster, but there is a loss factor when using an inverter. Most are around 80% efficient, meaning there is a 20% loss. Larger inverters usually have a fan also that has additional draw.
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Old 12-04-2015, 10:13 AM   #8
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Am I wrong in thinking that it really doesn't matter if you have a 1000 watt inverter or a 5000 watt inverter if you plug the same thing into either it's going to draw the same?
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Old 12-04-2015, 10:59 AM   #9
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I would have thought, but the poster a few up said they knocked a few static amps off by using a smaller inverter..
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Old 12-04-2015, 11:04 AM   #10
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Quote:
Originally Posted by doc73 View Post
I would have thought, but the poster a few up said they knocked a few static amps off by using a smaller inverter..
Sounds reasonable.
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