Other than some statements I have heard about battery reaching full capacity after X cycles... Maybe that is a wives-tale as well. Otherwise, maybe I was not clear. By cycling, I mean daily (or periodic) Absorb as I mentioned in the email, not loading/draining the battery (other than the clear statement to test to see if the system actually works as a backup system every once in a while). No real deep draining necessary. For instance, after some months without issue, one customer called in a panic because the electricity did go off one night and they had no backup. Turns out, somehow they turned off the "Inverter" function. Easy solution, press a few buttons, etc. to turn on the inverter. Maybe all I need is a Time function attached to Selling, like the Charge function has on some brands. Who knows. It is clear that FLAs have a self discharge and some percent of capacity is obtained during Absorb, so a long term Float only might reduce some of the batteries capacity. Anyway, Outback does have the "Absorb before Sell" function when using the FN-DC in the system. Not sure about the newer version of hardware. The "Parameters Met" settings gave me fits until I figured it out. Plus, the FN-DC is not free. The XW has a function for Absorb before/during sell. I think it requires a XW CC. We use every brand of CC appropriate for the site. Also, the setup instructions are weird in my mind since it requires the Grid Support Voltage to programmed to very high value. I wish they would just have added the function "Enhanced Interactive Mode = Enable", etc. Ok, enough rambling... Maverick
_____ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of toddc...@finestplanet.com Sent: Saturday, February 18, 2012 3:37 PM To: RE-wrenches Subject: [RE-wrenches] cycling flooded batteries is not necessary to reiterate wrenches: two battery manufacturers (surrette & trojan) have both stated there is NO NEED to cycle floating, flooded lead-antimony batteries. i have heard this urban legend for some time and it is nice to finally have it put to rest as an incorrect myth. todd On Saturday, February 18, 2012 7:04am, "Doug Wells" <dwe...@thesolarspecialists.com> said: > Maverick, > > "But you would think after 20 years, inverter manufacturers would make some > software similar to generator cycling to handle this cycling issue. " > > I believe that the XW Inverters have this ability in sell mode. There is > traditional sell voltage. And then there is a setting that puts the batteries > through a traditional bulk cycle while still "selling" back any excess energy. > The next question would be, is this better for battery longevity. Seems like a > hybrid of the two would be ideal. > > Doug Wells > The Solar Specialists > Morrisville, VT 05661 > (p) 802-223-7014 > (c) 802-498-5856 > www.thesolarspecialists.com > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > 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 > > Sent from Finest Planet WebMail.
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