___ Posted September 27, 2015 Share Posted September 27, 2015 Hi all, Curious about the suitability of these batteries for renewable energy. You can google them to find the very basic spec sheet, but there is no cycle life info for it. It appears to be the same kind of tech used by the Excis FMF type battery. Seems to be an AGM type battery with silver-calcium plates. What kind of cycle life is to be expected? Quote Link to comment Share on other sites More sharing options...
superdiy Posted September 28, 2015 Share Posted September 28, 2015 What I've learned over the past few months is that if cycle life is not specified, the batteries are usually not designed to be cycled, but rather for standby applications such as in UPS systems. Quote Link to comment Share on other sites More sharing options...
___ Posted September 28, 2015 Author Share Posted September 28, 2015 That's what I suspect too. It looks like best case they will do 1000 cycles if you cycle 20% DoD, which isn't brilliant. Only reason I am asking, I can get those 4 batteries for 8k. They are 5 months old and I know the seller well, they have not been mistreated. For my use case, a 20% DoD is actually fine. So it's really a bang-for-buck thing, but so far I really have the feeling that 1) it's better for the seller if he sells them to someone who will use them for backup purposes, and 2) it only really makes sense for me if I can get them for 6k or less... :-) Quote Link to comment Share on other sites More sharing options...
Rudi Weskaap Posted February 22, 2019 Share Posted February 22, 2019 Do you know what the c-rating of these batteries are? I used them for 4 years on my solar system, but now they are packing up and I must replace them with another brand. Rudi system Quote Link to comment Share on other sites More sharing options...
SilverNodashi Posted February 25, 2019 Share Posted February 25, 2019 They're stand by batteries. Not meant for cycling every day, asin a solar system First National Batteries manufacture them if you want to get more technical info. Quote Link to comment Share on other sites More sharing options...
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