All these years Ive been learning how to make battery packs and with every iteration I build a better 18650 Lithium ion battery pack every time.
This, is my safest battery pack to date. I have shared with you my experience and knowledge of building 18650 battery packs from over the years.
Hope you enjoy it.

Nickel Strips:
https://usa.banggood.com/custlink/GmD...

Fishpaper Orings
https://usa.banggood.com/custlink/mDm...


Build your Spotwelder here:
   • DIY Spot Welder Build Tutorial!  

Here's Lee's channel:
   / @leewright