[RE-wrenches] Best Battery

[William Miller]

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-bounces at lists.re-wrenches.org] *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 <drake.chamberlin at redwoodalliance.org> wrote:

Hello Wrenches,

What is the best Li-Ion battery to use with an off grid system?

Thanks,

Drake
Athens Electric

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