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Old 04-26-2010, 08:50 AM   #1
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Best way to keep 12V charged when not using unit

Hi,

Wondering best way to keep 12V battery charged when A/S sitting at home and not being used - I could just keep the power cord plugged in to an a/c outlet or use a trickle charger.

What works best?

Thanks,

Ken in MN
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Old 04-26-2010, 09:11 AM   #2
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Ken,

I don't know if it's the "Best way" however in the Winter I store my batteries up off the floor and hook them to a trickle charger. During the "Camping Season" I just leave them hooked to the AC shore power. Mine are Optima batteries and going well into their fifth year of service with plenty of life left according to my meter.
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Old 04-26-2010, 09:19 AM   #3
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I usually just disconnect the negative terminal if not using the trailer for an extended period of time during warmer seasons. Take them inside for the winter and trickle charge occasionally. I get about five to six years out of a deep cycle.
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Old 04-26-2010, 10:21 AM   #4
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Do not just leave it plugged into 110. The older chargers did not have a Management system in them and over time if left on will boil the batteries. If you have a trickle charger use it from time to time.

Consider a new converter that has a management system.
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Old 04-26-2010, 11:01 AM   #5
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I do have a new converter - okay to leave it plugged in? I do use the trailer as a refuge when things get too busy in the house.
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Old 04-26-2010, 12:49 PM   #6
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Howie,
Do you know if new(2009-10) trailers have the management system converters in them from the factory, or, are they the plain Jane model? How can you tell what you have?
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Old 04-26-2010, 01:42 PM   #7
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Quote:
Originally Posted by Bluto View Post
Howie,
Do you know if new(2009-10) trailers have the management system converters in them from the factory, or, are they the plain Jane model? How can you tell what you have?
I have the same question for a 2007 25' Classic Limited.

If need be, I'll call my dealer. I didn't know to ask when I bought it.

It does have a solar panel and the gizmos that go with that, that also tells me the condition of the batteries.
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Old 04-26-2010, 03:04 PM   #8
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If you have a true "3 stage" charger (such as the IOTA DLS 45 that I installed this past weekend) you should be able to leave it plugged in all of the time as it will maintain a float charge. We would need to know the brand/model to see if it was a 3 stage.

Some of this might be impacted by the types of batteries you use. I few years ago I switched to two 6V Trojan T105s as I was sick of the standard "Deep Cycle" batteries not holding charges etc. I find the Trojans just truck along and even hold a good charge over the winter when I disconnect them. We camp from mid March through Nov so our off season is onlyl 3 months or so.

Swapping the old Magnatek in my AS for the IOTA was the first thing I did after a I purchased the trailer. BTW as many have said on here, kudos to Randy at Bestconverter.com, he is great to work with and VERY responsive.
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