I agree. With some exception, we use AGMs for GTBB and FLA for Off-Grid. That makes the most sense to me.
But you would think after 20 years, inverter manufacturers would make some software similar to generator cycling to handle this cycling issue. We program inverter EQ settings to the Absorb Voltage setting and teach the customer to press the EQ button or menu once a month. We also instruct them to drop the grid once a month to make everything works as planned. No point in having battery backup system if it does not backup under a real outage. Certainly, there is room for improvement on battery care from the inverter guys on GTBB systems. Thank you, Maverick Maverick Brown BSEET, NABCEP Certified Solar PV Installer ® President & CEO Maverick Solar Enterprises, Inc. Office: 512-919-4493 Cell: 512-460-9825 Sent from an iPhone. On Feb 16, 2012, at 7:35 AM, Darryl Thayer <[email protected]> wrote: > Well I have some but little experiance, I tried flooded batteries, cycleing > batteries in float, I have had to many fail in two to 4 years, I have two > C&D sealed AGM battery sets in float, these are now 9 years old, and they are > due for a test, but it apperas they are still going fine. One set has had > about 2 grid outages in 9 years, the other maybe 9 grid outages. From my > experiance the sealed AGM should be the battery of choice for long float > periods. > Darryl. > > From: "[email protected]" <[email protected]> > To: RE-wrenches <[email protected]> > Sent: Wednesday, February 15, 2012 10:22 PM > Subject: Re: [RE-wrenches] Interstate L-16 vs Trojan L-16REB > > my inquiry is about the health of floating a lead antimony battery bank, in a > grid-tie with battery back-up system, where the batteries float 99% of the > time... considering (not specifically about any particular > brand/manufacturer) i have also heard talk about the necessity to have to > "work harden" a set of deep cycle batteries to get optimal use and capacity. > > in a battery backup system, the batteries wear our from old age, rather than > cycling lifespan. it is common for batteries in these systems to go years > with no cycling. if cycling is healthy for a battery. i'd like to know that. > i have heard people speculate on it before, but never got a definitive answer > from a manufacturer. i respect jamie and his expertise, so that is why i'd > like to hear what he has to say about these batteries theories floating out > there in wrench land. > > todd > > > > > > > On Wednesday, February 15, 2012 12:52pm, "William Miller" > <[email protected]> said: > > Colleagues: > > I am no sure if it would be appropriate for a manufacturer to comment in this > forum on the relative merits of two competing battery products. > > Respectfully, > > William Miller > > > At 12:27 PM 2/15/2012, [email protected] wrote: > > i would LOVE it if jamie surrette would chime in on this comment. > > > > todd > > > > Sent from Finest Planet WebMail. > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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