Experimenting with a new (and probably flawed) 18650 building method: No soldering or spot welding!

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Previously I enjoyed building a custom 18650 battery for my portable Monoprice Mini delta 3D printer. And then some of the cells failed, limiting overall voltage and making my charger unhappy. I wanted to build a replacement that is serviceable, as a trial run for a much bigger, more expensive and powerful battery I’ve had planned for way too long. In this video, I present you with my experimental build and how I have tried to solve some problems with this approach.

This is not intended as a guide! This method is currently unproven.

My MPMD no longer uses a heated bed, so this battery will have a very easy life. The future battery however, has 320 cells configured to produce 72V and a lot more current. Please help me refine the concept in readiness for that.

0:00 Introduction

0:51 The traditional way
Previous 18650 battery building video:    • Beginner’s guide to building safe 186...  

2:28 The problem

3:28 My ‘new’ concept
Vruzend: https://vruzend.com/
Camping powerbank video:    • Making the ultimate camping powerbank...  

5:34 Ampacity
Calculator: https://www.electrical4u.net/calculat...

6:27 Solving terminal contact consistency
MG Chemicals 847: https://mgchemicals.com/products/grea...
8481: https://mgchemicals.com/products/grea...
846: https://mgchemicals.com/products/grea...

8:21 Design and Manufacture
Kiri:Moto: https://grid.space/kiri/
Purchase the Carvera CNC (affiliate): https://bit.ly/3CVfsq3
Use code 'TeachingTech' for a small discount.

9:44 Assembly

11:58 Evaluation and future tweaks

13:49 Conclusion

Green tick used in thumbnail: https://commons.wikimedia.org/wiki/Fi...

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