box710
albany ny
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Joined: 03/04/2007
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I plan on leaving my 2008 bighorn on site in central Florida. I was wondering if I leave the unit plugged in if it will over charge my 2 agm batteries. This is my first fiver and am not really familiar with the process. Also if I leave it unplugged and disconnect the batteries will they go bad over the 6 months.Of the 2 options what do you think is the best on or is there a better option. Thanks in advance.
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pianotuna
Regina, SK, Canada
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Joined: 12/18/2004
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Hi,
AGM batteries have extremely low self discharge rates. I would disconnect them and leave them.
Alternately you could add a modest solar system.
Regards, Don
Kustom Koach Class C 28'5" 256 watts Unisolar, 875 amp hours in two battery banks 12 volt batteries, 2500 MSW watt inverter.
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garym114
Bluff Dale, Texas
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I think disconnecting them is best. I would worry less if there was no power to the RV while in storage.
Charge them fully and disconnect the ground cable from the batteries to remove all load.
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Some RV batteries live a long and useful life, some are murdered.
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korbe
Northern California
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I disconnect my 2 T105's at the end of my campin season after they get fully charged. I anticipated giving them a 24-hour charge about once a month, but didn't need to. After six months in my driveway, they didn't need much of a charge at all, and no water either.
2004 F250 SD PSD
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travelzoo
NW
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You could plug into a timer and then allow the timer to only come on about a hour a day.
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bpounds
Whittier CA
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I wouldn't leave it plugged in if it will be 6 months completely unsupervised. Install a battery disconnect, and leave the shore cord unplugged.
2006 F250 Diesel
2011 Keystone Cougar 278RKSWE Fiver
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Snow_King
Gold Canyon, AZ
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Here is some info about AGM batteries. If you are going to leave it plugged in then you should verify the float voltage of your converter/charger.
http://www.firststartbatteries.com.au/faq.html
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Veebyes
Bermuda & Maryland
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I have a single 4D AGM. It has been sitting disconnected & unattended since last November. I go back to it next Tuesday. In less than an hour I expect that it will be fully recovered from its winters sleep.
AGMs have a very very slow self discharge rate.
Leaving them on a trickle charge is not necessary & runs the risk of charger failure & cooking the batterys. An expensive loss. Seen it happen.
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