I would stop there and see if it is corrected. I have seen high SG when there is little or no boil offand water is not added, if someone has added acid the SG is not usable. You can use the entire system as it is a load tester turn off the pv, gen set and the wind put a 2 k load (ac) on the system and keep in on for some time now check the voltage at each battery this can show a poor or failing battery without the use of a carbon pyle or resistive load dump. I have done this with my off grid system and it works well. Jerry Hi Jerry,
I think his issue was the generator was starting at around 4-5am on some days. I think this may have been a programming error, I lowered the start voltages on the AGS. On Tue, Aug 12, 2014 at 8:12 PM, Jerry Shafer <[email protected]> wrote: > does your customer have any issues or is this a first inspection type call > just to see > Jerry > > > On Tue, Aug 12, 2014 at 3:54 PM, Mac Lewis <[email protected]> wrote: > >> Hello wrenches, >> >> I just went on a service call for a new client. He had a bank of 4 year >> old Interstate L16HCL batteries, 2 strings of 8, 48V system, 840Ahr. We >> went through the batteries and got specific gravity on all of the cells >> post-equalization. I was a bit surprised to see some very high numbers ie >> over 1.32 for the specific gravities (higher than my refractometer goes). >> The specific gravities were all over the place, but I haven't seen numbers >> this high. I don't have a great explanation. He has a stacked 3648 VFX >> Outback system, and the set-points were 58.8V Absorb for 2 hours, and 62V >> Equalize for 2 hours. He has a decent amount of solar (about 3400W) and a >> 1000W wind generator. >> >> Any ideas why the specific gravity is so high on some cells? Also, is >> there anything wrong with having SG this high, post-equalization? For this >> very standard battery, what settings do you go with (Bulk, Absorb, Float, >> Eq, and times for Abs and Equalization). >> >> Thanks in advance >> >> >> >> -- >> >> >> >> Mac Lewis >> >> *"Yo solo sé que no sé nada." -Sócrates * >> >> _______________________________________________ >> 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]/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> >> > > _______________________________________________ > 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]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > -- Mac Lewis * "Yo solo sé que no sé nada." -Sócrates * _______________________________________________ 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]/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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