I am about to order AGMs for two backup power systems, help, they will be in float all the time (except for emergencies. I have a set of C&D pure lead that was installed in 2003 and are still serving, the Last cycle was last July for a two-day outage, What batteries do you recommend?
On Fri, Jan 19, 2018 at 10:26 PM, William Miller <[email protected]> wrote: > Friends: > > I had a similar experience with Trojan vented L-16s about two years ago: > all of a sudden the product would not perform as it used to. A vendor let > slip that plate chemistry had been modified. I was later told that charge > voltages needed to be higher than ever recommended previously-voltages > difficult to achieve off-grid. This product degradation has been discussed > here. Likewise it was helpful to corroborate experiences. Thanks, everyone! > > William Miller > > > On Jan 19, 2018, at 4:12 PM, Maverick Brown <[email protected]> > wrote: > > > > Same here! We use mostly SunExtender and have had the same issue. As far > as I know, they are the same battery with different labels. I have had some > success in being a LOT more aggressive with voltages & times and sometimes > going above FLA settings to get banks to recover and perform closer to > spec. Makes me nervous though, since more than 50% of a customer’s > investment can just vaporize with what one thought was appropriate charge > settings. I suggest EQ as the new norm for AGMs, especially in > grid-tied-battery-backup cases and where off-grid use does not give > adequate absorb time. > > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/[email protected]. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > >
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