Join Date: Jan 2003
Location: Maine Coast
Thanked 250 Times in 193 Posts
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Re: Are portable generators safe?
I'm thinking that a 100 AH bank of AGM's could provide the same output as a 200 AH bank of wet cells because of their lower resistance. In combination with a generator and a charger (Samlex) that can be used as a power supply you would be doing the work of a wet cell bank with half the weight and half the space. The gen/charger combination that you would use with a 200 AH bank would be just about right for a 100 AH AGM bank. Thanks. Steve S.
It does not work that way. Both banks can still only be drawn to 50% depth of discharge and getting either bank back much above 85% state of charge while off cruising is nearly equally as difficult. Once AGM or FLA batteries hit "absorption" voltage they begin taking less and less current. This is just a fact of life with all lead acid batteries. Some AGM's will charge slightly faster in absorption but not enough to go from a 200Ah bank to 100Ah. Yes the time spent in bulk mode will or can be shorter with AGM but you are only talking about replacing 30-35Ah's in bulk mode.......
-Maine Sail / CS-36T
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