Modding the "Worlds Worst" Battery Welder

I've always wanted a battery welder, and the finally made on I can afford. 0:00 - The Worlds Worst Spot Welder ? 1:33 - It's Claim to Fame 2:03 - Understanding The Instructions 3:09 - Understanding C Rating & Current Delivery 4:14 - What Goes Wrong 5:34 - Teardown & Inspection 7:12 - Seems to be "Pre-modded" 7:28 - "How It Works" Diagram 9:56 - My Mod Proof of Concept 12:17 - The Battery I'm Using 13:55 - Comments on Mosfet Control 14:50 - Weld Testing 15:48 - Comments on Probe Tip Quality 17:41 - Test Battery Welds 21:17 - Officiating the Mod 23:03 - Fitting Battery Leads 24:00 - Final Testing