Quote:
Originally Posted by Metalman
Ken, Chance,
Thanks for the info. on AGM batteries. The graph and the link to the web site are both helpful. I have been using AGM batteries in my motorcycles for several years and haven't had a failure yet. The fact that they don't need maintenance, are vibration resistant, and have a slow discharge rate when not being used are excellent characteristics and worth the difference in cost to me.
The cost of the AGM deep cycle batteries that I recently installed in the RV were about three times the cost of a group 27 deep cycle battery. They came with knurled brass posts, so I had to buy adapters for the screw connections. The are now disconnected from the coach and connected to a battery maintainer, since the coach is being stored.
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I posted elsewhere here, maybe even in this thread, but I think it bears retelling. My travel trailer came from the factory with 2 group 27 Lifelines.
I nearly always had the trailer plugged into shore power when stored. As soon as I received the trailer from the dealer, I replaced the converter with an IOTA DLS/IQ-4.
I sold the trailer 7 years later and the batteries' performance had not decreased at all.
Ken