Need help constructing a pack

[Blackfender87]

Hi.
I’m trying to build a triangular mid frame battery pack
For my specialized enduro expert.

I can’t find any where a diagram for the layout.

13s7p

I’ll appreciate the help.

 

[kdog]

That's where the DIY bit comes in...
I would build a battery housing to fit your frame first utilising highly sophisticated CAD (cardboard aided design) then fit your battery to the interior of the space you have left. Don't forget to include space for padding, insulation, wires and bms. Don't make it so tight it's a pain to getting and out. Have a balance lead easy to access.
Read up on the threads on how to layout a battery and away you go...

 

[eMark]

This diagram is for a 14S8P Vruzend pack, but should provide the basic layout for your 13S7P pack ...
https://endless-sphere.com/forums/download/file.php?id=262283
https://endless-sphere.com/forums/download/file.php?id=262280
https://endless-sphere.com/forums/download/file.php?id=262282

Here's a youtube that should provide you with general build even though it's for a 22S6P pack ...
https://www.youtube.com/watch?v=hrvplvwQM7s

Here's another Vruzend layout for a triangular pack for adapting when spot-welding your pack ...
https://www.youtube.com/watch?v=clawhNsORts

This should get you started and others having a ton of DIY experiences can provide helpful suggestions
and critique along the way of the above from their years of DIY pack building failures and successes :thumb:

 

[Blackfender87]

Thank you very much for your support.

I’ll check the links and I’ll update my progress

Thanks again

 

[john61ct]

There's a web app somewhere generates the layout for you?

Or just use graph paper

 

[eMark]

I’m trying to build a triangular mid frame battery pack
For my specialized enduro expert. 13s7p

Your 13s7p will be a squeeze as you're all too well aware. You've possibly already considered buying the 52v Panasonic 13.5ah Shark Pack for $500 having read this Enduro Expert article ... https://electricbike-blog.com/2016/05/18/where-have-you-been-all-my-life-7lb-13-5ah-52v-ga-shark-pack-from-lunacycle-reviewed/

However, it would sure be nice to have more Ah power and capacity than the sleek Shark 14s4p pack is able to provide ... https://electricfatbike.files.wordpress.com/2016/03/img_20151222_0824557521.jpg?w=1024&h=576 ... perhaps you can build upon this pattern for your 6P or possibly 7P pack.

Being you've decided on at least a 13s6p DIY pack for increased power capacity a honeycomb cell layout should allow just enuf room for your triangle layout (w/foam enclosure protection). This 14s6p cell pack wouldn't fit your Enduro Expert triangle unless reworked into a honeycomb cell pattern ... https://www.youtube.com/watch?v=Cg4pFSoalkk

Vruzend sells these 3-cell hexagonal holders when spot-welding a pack ... https://vruzend.com/product/hexagonal-18650-battery-holders-3-cell/

 

[Hwy89]

I used the more sophisticated CAD method, Cardboard And Dimes. Heads positive and tails negative. When the layout was finalized I colored the heads with a red marker to make them show up better in the photograph.
Dimes are almost the perfect diameter for 18650 layouts.