Hi Larry, I've talked to Ralph about adding temp comp and puekerts. But he doesn't know think that it matters, I don't agree with him though. http://bogartengineering.com/sites/default/files/docs/PeukertsComments.pdf
Jay Peltz power. > On Dec 17, 2015, at 7:26 AM, Starlight Solar Power Systems > <la...@starlightsolar.com> wrote: > > Jay, > > And, and, and, indeed. There are SO many factors affecting battery life. With > some battery capacity monitors (like Blue Sky Energy IPN-Pro), you can see > the total kWh removed from a battery bank since it was installed. But that > data does not consider the non-linearity of the DoD/Cycle life relationship. > Even if it did, there is much more that affect life every day. One grossly > neglected item in battery monitors is the tracking of operating temperature. > Since high cell temperature has such a great affect on life, this data would > be an eye opener to most battery owners. > > By daily monitoring and logging temperature and DoD and charge rate and kWh > removed and EQ cycles, days deficit charged, and, and... we should be able to > model accurate end of life for any battery. Years of data should tell us if > the battery is used up, abused or has a problem. Mr. Hiesey, how about > building something like that? > > Larry Crutcher > Starlight Solar Power Systems > > > > > On Dec 16, 2015, at 6:44 PM, jay <jay.pe...@gmail.com> wrote: > > HI Luke, > > Without knowing what the charging parameters its really hard to know whats > going on. > > And this false issue with life span is years really gets me. > Batteries are measured in cycle life, period, So to say a IND battery will > get 15 to 20 years is bunk. > It’ll get the cycles based on DOD, if its charged correctly, watered and the > sun is in a good phase and, and and, > > I’ve got a guy who’s worn out his Hup’s in around 5-6 years. > But how would any other but an IND battery worked with that hard of a life, > yikes, L-16’s would have been a set a year. > > But I’m guessing his 11 year old batteries could be quite done. And he is > caught in the perfect bind. > Do you spend money on replacing some of the cells? > If it was my client, I’d say no, he’d be throwing good money after bad. > > jay > > peltz power > > > _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
