I once build a 8s20p battery for a drone using nickelstrips and a spotwelder. At one point the battery looked exactly the same as the one in this article. I mad

I once build a 8s20p battery for a drone using nickelstrips and a spotwelder. At one point the battery looked exactly the same as the one in this article. I made a dumb mistake by letting my scissors fall on the exposed battery cells. Causing a huge spark and flames with black plumes covering my whole 100m3 garage in black ash and other crap. Always have a metal case, and fire blankets nearby.