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Old 08-16-2009, 06:57 AM   #1
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Newbie electrical questions -- "Use" and "Store"?

Hi Folks,

New to the Forum and just picked up a '07 International. I have a basic question about how the 2 batteries interact with the unit when I'm plugged into power via a campground or generator. Do I need to press "Use" or "Store" when I plug in? Do the batteries run certain electronic components and while others are powered via the 30 AMP plug in? Concerned about running my batteries down, even when plugged in...

Thanks!

JJ
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Old 08-16-2009, 07:58 AM   #2
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Welcome to the forums! Your Airstream has two electrical systems, 12v DC and 110v AC. The 12v system powers your fans, lights, radio, water pump, reefer (if you have that type) and anything you have plugged into your 12v power points while the 110v system powers your microwave, air conditioner, and anything else you have plugged into your 110v household style outlets.

Your 12v system will stay charged while you're plugged in at a campground, as long as you don't engage the battery disconnect. I'm not totally familiar with the Use and Store labels. Sounds like a battery disconnect switch, though. As long as you're in the "Use" mode you should be fine. I assume the "Store" mode allows you to disconnect the battery while plugged in so you don't boil your batteries dry.

Again, welcome to the forums.
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Old 08-16-2009, 08:25 AM   #3
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Another use of the store position is there are certain appliances that will have a small 12v electric draw even when shut down, such the memory in an audio system and circuit boards in fridge, and furnace. The store position will keep this from happening. It is usually used for off season storage.
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Old 08-16-2009, 09:33 AM   #4
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picutures and words

This post with pictures may be helpful explaining the effect of the store versus use functionality. Hopefully

Cheers,
-jd.
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Old 08-16-2009, 09:36 AM   #5
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Welcome from the Florida Panhandle

First off, welcome the the Forums. We're glad to have you with us.

Mike has given you the run down on the AC vs. DC issue. You do definitely want to be in the "use" position on the master switch, and the little red light on the panel will be lit. You converter is powered by the 110 volt AC power and, in turn, keeps your battery or batteries charged as all of you 12 volt DC components continue to run on DC even when plugged in at a campground.

Brian
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Old 08-16-2009, 11:39 AM   #6
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On my 2008, I cannot use the "store" position when plugged in. It flips it back to "use" and the red light comes back on. The parallax thing prevents the battery from being over charged.
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Old 08-16-2009, 06:35 PM   #7
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Battery Disconnect Switch

The "Use" and "Store" position of the Battery Disconnect Switch is discussed in detail in "Battery Disconnect Switch, Solar, & AGMs".

Also note that when connected to shore power the Battery Disconnect Switch red light remains lit in either position. See more about this here.

Quote:
Originally Posted by 1cericks1 View Post
On my 2008, I cannot use the "store" position when plugged in. It flips it back to "use" and the red light comes back on. The parallax thing prevents the battery from being over charged.
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Old 08-16-2009, 08:21 PM   #8
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Thanks all for the great replies. Very helpful and appreciated.
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Old 08-27-2009, 10:44 PM   #9
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"Use" and "Store" switch

On our 2007 Safari 20 SE the "Store" position of the "Use" and "Store" switch isolates the batteries from the converter when we are plugged into shore power. Can we assume our batteries are protected from over-charging in this mode?
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