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Old 02-09-2013
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Re: Are portable generators safe?

"I'm thinking that a 100 AH bank of AGM's "
A 100Ah bank of AGMs would be called one group31 AGM battery. Not much point in cobbling together a "bank" to do that, at all.
Battery makers typically say that AGMs can be charged at 25%C and wet cells at 20%C so there is not a whole lot of difference there, four hours for AGM versus five for wet cells, half of that (2 hours compared to 2.5 hours) if you are doing a 50% charge cycle.
Hardly a deal breaker for most genset users. AGMs will also be maybe 30% more expensive and more sensitive to overcharging as well. Not that I don't like them, but it sounds like someone sold you on the magic without going into all the fine print.
Gensets in general will just point out one regulated voltage, not following a more advanced charging protocol either. That's also going to hurt, and hurt more with higher-priced AGMs.
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