Review on 🔋 U.S. Solid Battery Spot Welder with Capacitor Energy Storage – 11.6 KW Mini Portable Spot Welding Equipment feat. 70A Welding Pen for 18650, 14500 Lithium Battery Pack Building by John Munajj

I've been doing a lot of research on battery technology and decided to build some batteries (for the couple of UPS's I use). I probably spend $500 a year on batteries for all the UPSs I have in the house, and LiFePO4 batteries can have a high initial cost, but over the long run these are the absolute best batteries for just about anything that uses a battery. I bought a couple of small spot welders off Amazon and only one was halfway decent but still not great. This spot welder works great! VERY high quality welds and totally worth the money.