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Old 09-05-2015, 05:49 PM   #1
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Smile Storage while plugged in

Hi!
I have a 2011 Allegro 32CA and I recently replaced my 2 6-volt house batteries. While I am plugged in in the backyard, should I turn the battery isolation switch On or Off?

Previously, I had always left it on. But I am guessing that a 4-year battery life is not too bad.

Howard
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Old 09-05-2015, 05:54 PM   #2
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I forgot to say that I am plugged into a 30Amp RV socket.
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Old 09-05-2015, 06:12 PM   #3
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When my coach is plugged in to any shore power I leave all the battery switches in the on position. If I am leaving the coach for any length of time (more then a few days) without any outside power, I turn off both house and chassis battery switches. The solar panel on my coach seems to do a great job keeping the batteries fully charged while they are idle.

That's just my opinion and others may have more experience then me, but this works well for me.
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Old 09-05-2015, 06:13 PM   #4
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I leave mine plugged in to keep all batteries fully charged. Whether that is correct or not, I am not sure. My batteries are always charged, but I need to keep a good check on the electrolyte solution to ensure it doesn't run dry from constant charging.
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Old 09-05-2015, 08:57 PM   #5
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I leave mine plugged in to keep all batteries fully charged. Whether that is correct or not, I am not sure. My batteries are always charged, but I need to keep a good check on the electrolyte solution to ensure it doesn't run dry from constant charging.
The way I understand it, while plugged in to shore power, 15 amp, 30 amp or 50 amp with the battery disconnect switch off, the batteries will not charge....it must be in the on position. I am not sure about how most solar panels are wired but it would be ideal if they were wired to work with the disconnect switch off.

WDK
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Old 09-06-2015, 07:56 AM   #6
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I keep mine plugged in and during the winter it is indoors in a warehouse storage facility. I do check the water level during the winter months, but since I started using the Water Miser Battery Caps the amount of water needed has dropped quite a bit.
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Old 09-06-2015, 09:00 AM   #7
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If you have a 3 stage charger leave it plugged in. The last stage is a float charge that keeps batteries topped off and helps prevent sulfation but won't boil off electrolyse. If you don't have a smart charger (3 stage), then disconnect the battery or the electrolyte will boil off.
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Old 09-06-2015, 10:49 AM   #8
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My last 2 coaches have had a 3 stage charger and I have left the charger on 24/7 all year long and no problems with the batteries.

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Old 09-06-2015, 11:52 AM   #9
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Quote:
Originally Posted by Howard Janin View Post
Hi!
I have a 2011 Allegro 32CA and I recently replaced my 2 6-volt house batteries. While I am plugged in in the backyard, should I turn the battery isolation switch On or Off?

Previously, I had always left it on. But I am guessing that a 4-year battery life is not too bad.

Howard
When plugged in to shore power you should leave all isolation switches in th ON position so your converter will keep the house and chassis batteries charged. Properly maintained batteries will last up to 8-10 years.

I recommend if you don't already have one, get a digital voltmeter and check the battery voltage on both the house and chassis batteries after you have it plugged in for a while (say overnight). You should see a Maximum of 13.8 VDC while plugged in. Anything higher will result in reduced battery life and excessive off gassing of the cells resulting in having to top off the water more often and corrosion around the terminals.

If the battery voltage is high, you should have the converter checked and calibrated or replaced as required. However, if you have even one bad battery out of the set, it will also cause the converter output to rise trying to charge the faulty battery.

So, short answer, leave all switches ON but check the battery voltage to make sure all is well with the system and, DO check the water levels in the batteries at least every 60 days to ensure they don't drop below the top of the plates which will ruin your batteries.

My coach is stored indoors and is plugged in 24/7. My batteries are about 6 years old now and still doing their thing. My battery voltage reads 13.7 - 13.8 VDC all the time and I add water maybe every 3-4 months.
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Old 09-06-2015, 04:41 PM   #10
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My last 2 coaches have had a 3 stage charger and I have left the charger on 24/7 all year long and no problems with the batteries.

Don
I have a smart charger and leave the coach plugged in all the time. I don't know how many "stages" it has, but when the batteries are fully charged, the charger shuts itself off and comes back on when the batteries drop to a certain level.
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