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Old 03-20-2019, 06:00 PM   #1
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I know I have searched and searched, store or use?

I have read and read and cannot get a straight result.

Today I had a 30 amp outlet installed and I am planning on keeping my AS plugged 24/7.

So question is the switch by door where should it be? Store? or Use? for best battery results.

Thank you, been awhile since I was on.
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Old 03-20-2019, 06:02 PM   #2
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I keep mine in store unless I am working in it or loading/unloading. No problem either way, just saves a bit of electricity in store.
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Old 03-20-2019, 06:05 PM   #3
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With a 2010 international you can keep in store mode while on shore power. Once a week turn to “use” for 24 hours to top up and float the batteries.
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Old 03-20-2019, 06:19 PM   #4
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Well just discover won’t go into store while plugged to shore power, so never mind.
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Old 03-20-2019, 06:23 PM   #5
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I know I have searched and searched, store or use?

Yes it will. The light stays red when on shore power, but the batteries will still get disconnected by the relay.

You can hear it “click” when the relay connects / disconnects the batteries.
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Old 03-20-2019, 06:30 PM   #6
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^
What wulf said
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Old 03-20-2019, 07:14 PM   #7
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I know I have searched and searched, store or use?

The red light only indicates you have 12 volt power to your 12 volt accessories. It does not and cannot tell you what the latching relay is actually doing. Press store or use, and you will get a similar-sounding ‘klunk’ as the relay opens and closes.

If you press store, the relay made the noise, and then you unplug shore power the red light will go off if the relay is actually in store position.

Wulf is absolutely correct.
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Old 03-20-2019, 07:25 PM   #8
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There's another piece of the puzzle.

Neither position, "store" or "use" is good for the battery over extended time.

Store - will deprive the battery of any maintaining charge, and they will self-discharge over time.

Use - will tend to overcharge the batteries over time, drying them out, and needing to water them more regularly

Several options:
1) One can get a more advanced multistage converter/charger, but even these don't guarantee ideal battery maintenance depending on what 12V device is being used
2) Turn on/off the store regularly as someone mentioned above.
3) Use "store" and plug in a separate float/maintainer charger on the batteries directly. These chargers can be had super cheap with a nice pigtail that would be easy to plug in the batteries. Same as one would use to store a car.
4) Install solar to maintain the batteries, and use the "store" position.
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Old 03-20-2019, 07:50 PM   #9
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Quote:
Originally Posted by wulfraat View Post
With a 2010 international you can keep in store mode while on shore power. Once a week turn to “use” for 24 hours to top up and float the batteries.
Quote:
Originally Posted by dznf0g View Post
I keep mine in store unless I am working in it or loading/unloading. No problem either way, just saves a bit of electricity in store.
These are fairly simplistic answers IMO. Nothing more to advise about battery management? Suppose he goes away for a month, with the unit in Store mode? Is there something unique about this Use/Store switch I am missing?

pteck's recent advice is good, but it is also possible to manage the batteries when plugged in at home, as here.

THEPILL -- Make sure battery water is full, and specific gravity of each cell is OK. [separate discussions]

Unplug from shore power, wait an hour, and check the battery voltage. If below 12.5, plug in for 2-3 days, and repeat the process of checking voltage, until the battery voltage gets up to 12.7 volts +/-. At which point you can unplug from shore power and hit "Store," and you should be good for a week or so.

As you get familiar with the process, you might get 10 days out of the batteries before they go down to 12.3 volts. Never let them go below 12.3, or risk damaging them. If your trailer has lots of phantom loads on the batteries, this could change the analysis. [separate discussion]

If you upgrade the charger/converter to a smart one, the analysis would also change.

If it ain't broken, don't fix it. You can work with what you have at home.

Good luck,

Peter
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Old 03-20-2019, 07:58 PM   #10
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Originally Posted by OTRA15 View Post
Nothing more to advise about battery management? Suppose he goes away for a month?
I am not sure if his is wired like mine. I have a manual store switch which does not shut off the converter...only most all the 12v circuits. Battery is still online with converter when switch is off. I have a 4 stage converter so leaving shore power connected keeps batteries charged. My converter is not hard wired. It plugs into a standard 120v outlet. In addition, I have 200w of solar, so I unplug the converter, let the solar keep the battery up, 12v switch off. That way, I can run a heater or dehumidifier with everything else off and isolated.
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Old 03-20-2019, 08:14 PM   #11
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Quote:
Originally Posted by dznf0g View Post
. . .
. . . I have a manual store switch which does not shut off the converter.
. . .
That is what I was asking about. Thanks, Rich, for the clarification.

THEPILL -- you will have to verify that your converter/battery charger is working, even when you go to "Store" on the switch. If so, you will still have to actively manage your batteries per my last post, or get a smart charger per pteck.

Does your owner's manual go into the specifics of your Use/Store switch, which may be different than what most Airstreams have IMO.

Peter
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Old 03-20-2019, 08:53 PM   #12
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I know I have searched and searched, store or use?

Quote:
Originally Posted by OTRA15 View Post
These are fairly simplistic answers IMO. Nothing more to advise about battery management? Suppose he goes away for a month, with the unit in Store mode? Is there something unique about this Use/Store switch I am missing?

I also mentioned that the OP should charge / float the batteries for a 24 hour duration every 7 days. With stock lead acid batteries on that 2010 trailer you will burn down 10-15% of AH capacity based on phantom draw of the LP detector and self-discharge of the batts.

Was trying to keep it simple if it’s going to be on shore power more or less permanently.

The alternative is just completely disconnect / remove the batteries and give them a good 48 hour charge / float once a month.

Pteck laid this out better than I did lazy poster over here
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Old 03-20-2019, 09:13 PM   #13
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I had to plug the AS in & update the grey cells..🤔

Quote:
Originally Posted by dznf0g View Post
I keep mine in store unless I am working in it or loading/unloading. No problem either way, just saves a bit of electricity in store.
^
X2

Quote:
Originally Posted by wulfraat View Post
With a 2010 international you can keep in store mode while on shore power. Once a week turn to “use” for 24 hours to top up and float the batteries.
We charge in 'store' mode👍.

YMMV

Bob
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Screen shot...switch in store mode, no power in trailer, Lp detector switched & turned off.
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Old 03-20-2019, 09:20 PM   #14
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I know I have searched and searched, store or use?

Quote:
Originally Posted by ROBERT CROSS View Post
^

X2







We charge in 'store' mode.



YMMV



Bob





Screen shot...switch in store mode, no power in trailer, Lp detector switched & turned off.


That’s because your solar connection bypasses the store/use relay and connects upstream along with the trailer brakes, etc. I did the same thing in my 2008 when I added solar.

Now the OP said nothing about solar, only that he is leaving the unit on shore power.... so my assumption is that he has a stock unit without aftermarket panels as solar wiring.

I had the same setup in my 2008, and without solar the batts will not charge if the store/use switch is in store mode.
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