Most detailed battery build tutorial. Block battery.

Second tutorial on how to build a battery pack. This time it is a block battery - for the on top of the deck installation.
Additional videos that i do refer to in the video:
New mountain board parts list -    • PARTS YOU NEED for DIY ELECTRIC MOUNT...  
K-weld spot welder review -    • BATTERY CELL SPOT WELDER. K-WELD.  
Flexible, flat pack build tutorial -    • A very, very detailed video on how I ...  
Everything about battery cells -    • ALL ABOUT BATTERY CELLS. BATERY PACK ...  
Everything you will need to build a battery -    • WHAT PARTS AND TOOLS DO YOU NEED TO B...  

Where did i get the parts?
fish paper - https://www.ebay.co.uk/itm/174252381814
silicone cables - https://www.ebay.co.uk/itm/1144011884...
anti-spark connector - https://www.ebay.co.uk/itm/284229001788
charge port - https://www.ebay.co.uk/itm/4028032828...
shrink wrap - https://www.amazon.co.uk/gp/product/B...
FR4 sheet - https://www.ebay.co.uk/itm/1223082789...
21700 cells and nickel - https://www.fogstar.co.uk/pages/fogst...
Smart BMS and chargers - LOOK AROUND and find what you need. I do not use the BMS for discharge so to buy the lowest discharge rating BMS - https://www.lithiumbatterypcb.com/pro...
cell trays - https://www.ebay.co.uk/itm/1334044561...