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Broccoli Bus Six

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Completed Lithium Battery Overview

Posted on January 4, 2019June 20, 2020by Aaron Bockelie

25kWh of total capacity. Charge and discharge limits fence this to 19kW of usable capacity with an expected lifetime of 14-18 years before replacement of cells is necessary. 3kVA in split phase. So about 6kW total outputish. Recharges via 50 AMP RV connection or 2.5kW of roof solar. Remote monitoring via cellular data with packet radio fallback. Weighs about […]

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Leaf pack modules and thoughts

Posted on May 2, 2018September 14, 2020by Aaron Bockelie

So at this point, I have a bunch of potentially dangerous sardine cans that I’ve extracted from a Nissan leaf “battery”. Sometimes all this disassembly reminds me how everything in the world can be considered objects and classes of objects. Car Battery enclosure Battery group Battery module Parallel cell group Pouch cell Lithium plate stack […]

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Nissan Leaf battery pack disassembly

Posted on March 21, 2018by Aaron Bockelie

A week or two ago, the time was finally right to try and purchase a lithium battery pack for our bus. I’ve been planning on this for several years now, and in fact our whole project revolves around the energy density afforded by lithium power storage. I don’t think I’m doing anything particularly novel here […]

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Big lithium bus battery design criteria

Posted on March 15, 2018by Aaron Bockelie

I’ve been thinking over various design ideas on the big battery pack. This might sound sort of obsessive but really this conceptualizes the core of the ability to live off-grid, and it presents so many positive opportunities it would be a disservice to not consider them. Some of them major concerns I had, and perhaps […]

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