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
