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Old 10-31-2013, 06:58 AM   #1
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Coach batteries

My motor home will be stored outside , no electric . Should the deep cell batteries require anything special while storing ? Thanks in advance . Newbie John
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Old 10-31-2013, 07:39 AM   #2
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Yes - they need to be kept at least partially charged. They will go dead, possible in just a few weeks, if left to themselves. Also, they are subject to freezing if the state of charge drops very low, say under 60%. If the electrolyte freezes. The case cracks and/or the internal plates get warped, destroying the battery.

If you can't get some charge to them, either a constant trickle or a monthloy re-cahrge, remove the batteries and keep them in an above-freezing place. Even then, you need to give them at least an occasional re-charge to keep them healthy.
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Old 10-31-2013, 07:56 AM   #3
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There have been a number of previous postings on this subject, and several different approaches to battery storage. You did not say how long you intend to store them. But as a minimum you should turn the disconnect switch off or disconnect the cables. Here is an approach that will provide protection under most normal storage. First, service the batteries and fully charge them. Then remove the cable connections and clean the tops and terminals as well as the cable connections. This should eliminate any chance do parasitic drag. Some people use a trickle charger if they have power available. I usually apply battery terminal spray to the terminals even if I do not reconnect them. If your batteries are healthy then this will suffice, no trickle charger required. I have seven cars, four tractors a dozer and a diesel motor home and this has been my practice for 50 years and it works for me. If you have a weak battery, then it may not survive the winter. With the cables disconnected that weak battery will not drain the other stronger units. I get three to seven years of battery life on all my stuff and I consider that normal.
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Old 10-31-2013, 06:38 PM   #4
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When we stored our toys where there was no electricity I removed the batteries, brought them home and stored them on a bench in the garage. I bought trickle charges ($8-$10 at Harbor Freight) and left them on all winter. Those batteries where always good to go for years and years.
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Old 10-31-2013, 07:02 PM   #5
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Originally Posted by Johntraveler View Post
My motor home will be stored outside , no electric . Should the deep cell batteries require anything special while storing ? Thanks in advance . Newbie John
Don't forget your chassis battery. Many coaches have a parasitic draw that will bring them down in a few weeks to a few months. At the least, disconnect it (pull off a cable end). Same with the coach batteries. The salesman switch usually leaves enough stuff connected to discharge them. If no way to get them to an above freezing environment, disconnect them. They will all still self discharge, just not quite as fast. It is best to keep a battery maintainer on them even if you have to remove them. If you don't live in a freezing climate at least they won't freeze but can still be damaged by being completely discharged.
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Old 10-31-2013, 07:06 PM   #6
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There is another option that might work for you....
Grab a few beers, drive out to your coach every 3-4 weeks, flash up the generator for an hour or so while you take care of the beers. You can also bring a partner and a crib board along, turn on the furnace and enjoy.
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