DIY Battery Spot Welder - Demonstration & Explanation

I thought I'd do a quick demonstration while I'm using my spot welder at the moment to make up a 10s4p li-ion battery pack. *Nickel Strips* http://amzn.to/2j8HQvo http://amzn.to/2jBqHhV https://www.ebay.co.uk/itm/Solid-Pure... *Solenoid Relay* http://amzn.to/2j5cLc8 http://amzn.to/2j7GpNR *Choc Block (Electrical Connector)* http://amzn.to/2AScb90 *Copper Nails* http://amzn.to/2hOHNbD *Heavy Gauge Cable* http://amzn.to/2j4Vy2G *Momentary Switch* http://amzn.to/2jF69Fv http://amzn.to/2j6hfz8 http://amzn.to/2j5rLXy 12v DC Delay Relay Timer - http://www.ebay.co.uk/itm/12V-DC-Dela... (To activate the switch that activates the solenoid, NOT to replace the solenoid.) My Website: http://kevindark.co.uk