Opinion Please on These AGMs for an RV
Somebody Up-Island is selling these type of batteries: http://www.eastpennmanufacturing.com/wp-content/uploads/Unigy-I-IO-Manual-0902.pdf EDIT---What do they mean by saying the Float voltage is ...
Forum Discussion
wa8yxm wrote:
However I have found NO advantage of AGM over flooded wet cells with the exception of the absence of a "This side up" label (AGM's can be mounted in most any position you choose).
John, as you know ... AGM batteries have lower internal resistance than flooded batteries. One can see this right in their specifications.
This lower resistance means - per basic electrical principles - that they will accept a higher charging current at any applied charging voltage.
That is important for part-time drycampers who want to stay with their stock onboard fixed voltage converters - plus short drives between dry camping spots - for charging of their coach batteries. We elected to stay with our stock converter and go with more-$$ AGM batteries, as opposed to paying more-$$ to retrofit with a multi-stage charger and staying with less-$$ flooded batteries. This combination has worked out well for us over the past 11 years with respect to our camping style.
I guess we could have done both to optimize - spend the $$ to retrofit with a boost voltage charger plus spend the $$ to switch to AGM batteries - but the dollar value would have not been worth it to us to do both of these things.
