The BMS in each system will balance under charge and protect hi discharge currents in multiple battery systems. This is typical in multiple Li batteries. I would expect them to do this BP. I have seen this with 20 of the AES Li batts. No problems with circulating currents. I would expect you to have had this with the AGM banks. Ouch too many strings.
The cost is missing some data for me at a glance. LFP has always been a minimum of 2 times more when I look. The costing also depends on them lasting the full warranty and someone with deep pockets to back it up. Hope this helps. Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ [1] e-mail offgridso...@sti.net [2] text 209 813 0060 On Mon, 10 Aug 2020 22:09:00 -0700, William Miller wrote: Friends: I am hoping y'all can tell me I am doing something wrong with my arithmetic. I have registered to purchase Blue Planet batteries and priced the product. I come up with math that indicates that comparing usable amp/hours to usable amp/hours, that the Blue Planet is 5 times the cost of a flooded L-16 battery array on a cost per kilowatt/hour. Can this be true? I am using these parameters: 1. DOD for flooded L16s: 50% 2. DOD for Blue Planet: 100% I hope I am wrong. Also, we often install battery arrays that are upwards of 4,000 AH. For example, we installed 5,668 of East Penn flooded batteries on a couple of projects. To acquire the same capacity in Blue Planet would require 9 cabinets (again 50% DOD versus 100% DOD). Is this correct design? Is it practical to install 9 cabinets? Does the system detect and compensate for circulating currents in this many parallel strings? Thanks in advance. William Miller FROM: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org [3]] ON BEHALF OF Jerry Shafer SENT: Sunday, August 9, 2020 12:02 PM TO: RE-wrenches SUBJECT: Re: [RE-wrenches] Best Battery Wrenchel have been very happy with all my Blue Planet battery systems, best battery you will install. Jerry On Sun, Aug 9, 2020, 11:19 AM wrote: Hello Wrenches, What is the best Li-Ion battery to use with an off grid system? Thanks, Drake Athens Electric -- _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org [5] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [6] List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org [7] List rules & etiquette: www.re-wrenches.org/etiquette.htm [8] Check out or update participant bios: www.members.re-wrenches.org [9] Links: ------ [1] http://members.sti.net/offgridsolar/ [2] mailto:offgridso...@sti.net [3] mailto:re-wrenches-boun...@lists.re-wrenches.org [4] mailto:drake.chamber...@redwoodalliance.org [5] mailto:RE-wrenches@lists.re-wrenches.org [6] http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [7] http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org [8] http://www.re-wrenches.org/etiquette.htm [9] http://www.members.re-wrenches.org
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