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Wobbleszo Powerwall
#11
I have NCR18650 Envy
Wobbleszo likes this post
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#12
Just a quick update,

I got 1700 more cells (NCR18650BD) from a recycler and all the wrappers are damaged. I reached out to Keith and got 1700 more wrappers and 170 more cell holders to add them into my design. I am going to follow Mike's approach with the 300p packs...particularly after Pete's last livestream (wishing he'd gone with larger packs). I got solid 4AWG to use for busbars and have nearly finished processing the all the cells I have. After I rewrap the 1700 new ones, I will start construction one the upgraded packs.
Ibiza and Korishan like this post

My build is updated regularly on my site:
https://sites.google.com/view/wobbleszo/home
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#13
(01-23-2019, 08:25 PM)Wobbleszo Wrote: Small update on progress of processing cells: 1680 milestone for 14s, 120p! I still have ~420 cells to process, but only 280 to make it closer to the build phase. I've determined that I'll use the same Blue Sea Systems Class T Fuse like Mike did, but I think I am going to go with the 300A one instead of the 250A one. I was looking at the amperage range and the max with a 1.25 safety buffer was ~288A (3.1V x 14 = 43.4V and 10000W/43.4V = 288.02A) please correct me if I'm wrong here! 

Still need to decide on what to use for busbars, but leaning toward 3 strands of 4AWG grounding wire twisted and crimped, but then I need to figure out what size of crimp end to use to fit both ends into (6 strands of 4AWG). More maths! I appreciate the support of this community and my friends and family through this long process! 


at 1640 

at 1680 
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#14
Not sure what you were trying to post here, AjaykumarMore. Happy to help if I can...

My build is updated regularly on my site:
https://sites.google.com/view/wobbleszo/home
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#15
Updated on my site too, but I figured I might as well post here too...nearly 4 months later, I am still waiting on my cell order from a shipper that apparently sent the order to my road, but got the house number wrong and the order was returned to Georgia. He's offered 200 cells to be added over a month ago as part of an apology, but I'd really just like the cells I ordered. They all have damaged wrappers, but should be like new otherwise. I bought 1700 wrappers from Keith and cell holders too, but I am just waiting to assembler my battery. I don't want to build with what I have and then turn around and have to do it all over again if/when these cells arrive. I am starting to get really frustrated at having to wait so long! I thought by now I'd be taking full advantage of the bright summer sun, but I feel like it'll be winter before I get a chance to assemble it all. I wish that I'd have just contacted Tom Amerman or Terry Nagy instead...at least they ship at a reasonable pace. The difficult part was the price for these cells. NCR18650BDs at 3200 mAh each for less than $1 each due to the damaged wrappers. Falls under the age old adage of "if it sounds too good to be true, then it probably is." He shipped the previous orders a little slowly, but not 4 months after the order.

#feelingimpatient #feelinghopeless

Hope that the rest of you are having better luck...like Pete with his mad processing lately!


My build is updated regularly on my site:
https://sites.google.com/view/wobbleszo/home
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