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VIDEO: Overview of the 600 Cell 7.4V 750Ah Battery Module
#1
Video 


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Components Used:
Nickel Strip... https://ebay.to/2OA9UH4
4x5 Cell Holders... https://ebay.to/2vATi9I
1 AWG Copper Lugs... https://ebay.to/2O95hD4
4 AWG Copper Wire... https://ebay.to/2LM7PtY
6.5x0.25" Bolts... https://amzn.to/2O1oVk0
0.25" Washers... https://amzn.to/2MgSBtg
30 AWG Fuse Wire... http://amzn.to/2xYOFsk
Batrium BMS... https://batrium.com

hbpowerwall, chuckp, TheEngineared And 1 others like this post
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#2
That’s a great job, well done and thought thru. I would just be worried if one cell goes bad, to dismantle the whole thing to change one cell.
There is an urgent need to stop subsidizing the fossil fuel industry, dramatically reduce wasted energy, and significantly shift our power supplies from oil, coal, and natural gas to wind, solar, geothermal, and other renewable energy sources. 

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#3
Impressive.....but what about 7.2V ?   Huh
What use will you have of this strange voltage ? Will you use a buck step up ?
Batteries harvested: 2344 / Usable batteries: tbd (TBD%)

Cells tested: 1996 (Average: 1668 mAh) / Cells in production: 0 (00 %)
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#4
(08-03-2018, 02:10 AM)Hans Tuchel Wrote: That’s a great job, well done and thought thru. I would just be worried if one cell goes bad, to dismantle the whole thing to change one cell.

That seems to be the most asked question throughout my project. I have another video in mind to explain the procedure Smile

(08-03-2018, 03:18 AM)Sholphin02 Wrote: Impressive.....but what about 7.2V ?   Huh
What use will you have of this strange voltage ? Will you use a buck step up ?

I forgot to mention - There will be 7 of these modules, creating a 14s setup or 51.8V (48 Volt).
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#5
How on earth do you move that? If each cell weighs 45g, just the batteries alone would weigh 270kg. Not including holders or bus bars!
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#6
Code:
I forgot to mention - There will be 7 of these modules, creating a 14s setup or 51.8V (48 Volt).

Ok, much clearer now. It will be a massive battery.......impressive  Big Grin


Code:
How on earth do you move that? If each cell weighs 45g, just the batteries alone would weigh 270kg. Not including holders or bus bars!

Much more like 27Kg.......still heavy but more manageable   Wink
Batteries harvested: 2344 / Usable batteries: tbd (TBD%)

Cells tested: 1996 (Average: 1668 mAh) / Cells in production: 0 (00 %)
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#7
(08-03-2018, 04:45 AM)Sholphin02 Wrote:
Code:
I forgot to mention - There will be 7 of these modules, creating a 14s setup or 51.8V (48 Volt).

Ok, much clearer now. It will be a massive battery.......impressive  Big Grin


Code:
How on earth do you move that? If each cell weighs 45g, just the batteries alone would weigh 270kg. Not including holders or bus bars!

Much more like 27Kg.......still heavy but more manageable   Wink

Woops..  Tongue  Missed a 0 in that calculation. Should have been 0.045 * 600.

27Kg is heavy but definitely manageable. I see he put it on the scales in one of the photos, but I haven't had a chance to watch the video yet.
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#8
It's 29kg, I put it on the scale at the 8:45 mark in the video. It's heavy but it's easily liftable to put on the shelves. The idea is you build these, put them in service, and don't touch them for 10 years (I hope). I won't be lifting them every day.
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#9
Big Grin 
(08-03-2018, 11:03 AM)mike Wrote: It's 29kg, I put it on the scale at the 8:45 mark in the video. It's heavy but it's easily liftable to put on the shelves. The idea is you build these, put  them in service, and don't touch them for 10 years (I hope). I won't be lifting them every day.
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#10
Very impressive! So when its all said and done, you should have close to 38.85KWh? And with the packs being so big, they are able to handle a huge load correct?
Anfangen ist leicht, beharren eine Kunst.
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