Nice will you make an STL available when happy on 18650.lt ?
Sure mate they will be available. Just need to iron out so its 120% 
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- Less modules to mount
- Smaller overal size
- Less series connections outside the enclosure. If you dont need it there are 4P modules still available. Would you not agree that broader choice is better? You might not need it but the world is bigger than that and some might benefit.
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They make it so you can use 6 modules rather than 12 since both sides have screw terminals. So I’m using 22 single sided 4p tabs as the pic illustrates, and then 1 8p tab that doesn’t need any screw tabs, as shown in the bottom module in the pic.
Let me know if you have any questions 
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@agniusm, thanks. I get it now. I went back and looked more closely. Five modules to make a 10s4p battery, and the pack will be 375mm x 167.1mm x 22mm (14.75 inch x 6.57 inch x .86 inch) instead of 10 4p modules at 375mm x 195mm x 22mm (14.75 in x 7.75 in x .86 in). @uigiroux, thanks for the drawing. I’ve been following the developement of NESE modules all along. I was thinking about doing a 10s3p pack because of the width of the 4p modules. This design saves some space!
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That was exactly why I wanted a double sided unit, it saves space and cuts the number of modules you need in half. Only down side is it can only go up to 8p, where as I’d of preferred to make a 12s5p battery, but I guess 8 is a wide as they can go, I was told 10 couldn’t be done cause it would maybe start to bow or flex a bit in the center.
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Yes, I wonder about the flex because my deck has a large amount of concave. With a router one could make a flat spot for the pack if necessary.
Are the 4p bus bars as secure in the 8p modules? I was impressed by @agniusm monster shake test videos on his modules with the continuous bus bars (tabs?) I know this is a beta product. Shake test?
@OLnewB, tabs inside are constrained same as on all othe modules. Cell “cradle” does not allow them to move anywhere other than .5mm that is left for error. BTW, you can call them finished. I have betas sitting on my desk and @uigiroux will get first set of finished product.
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On the flex. The flex uigiroux was reffering to is in modules, lengthwise, not the deck. The more cells, the more bow as there is special foam which adds pressure with each cell, and its a lot of pressure. I would not go beyond 8P for that reason as it will be difficult to close the lid on the enclosure and sides would be too much stressed. I cant afford to have bad product. 1st of July going to be 1 year since i opened webshop and i had 0 returns, 0 negative emails from customers or mentions elswhere which i am proud of.
Just quoting myself from early postings on endless sphere on presure per cell: “All the data of pressure on tabs is in earlier posts, its in SI units and if you are interested, convert them yourself online to whatever you like. I can repeat it here, 17-20 newtons / 2.54cm² or 1.73-2.03kgf/2.54cm²” if you are interested scientific motives on why no larger than 8P. Actually 8P is a bit of stretch as design was for 6P only. EDIT: You can translate that as hanging 16 kilograms on one side of the module on 8P unit
Yes, I understand we are talking about the flex of the module. My deck is very concave on its width, not like these flat planks. It has almost no flex. If 8p or 2s4p modules are mounted across the deck, can they take a bit of a curve?
Modules cant take any curve, they are rigid.
I think i can add 2S3P and 2S2P modules to the line up. Should be fairly similar, only one end of the module will have hookup for sense wire instead of two like on 2S4P module.
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I AM going to finish fixing my 3D printer & complete the Puka build with your packs once this is out, thanks dude
Yes please 
@agniusm can you solder wires directly to your Series Tabs you cell in your shop? Because you are out of Tube Ring lugs atm and i am too lazy to drive to the next store^^
Yes. Its tin plated copper so very good for soldering. I guess you needed 6mm^2 and supplier was out of stock for them. Have to wait.
awesome thanks