With all of the batteries I have around that are tab welded, I thought that having a tab welder would be handy. Looking at a commercial tab welders, I discovered that they are VERY expensive. They should be because they are meant for industrial purposes and overbuilt for heavy-duty use. I didn't need anything that large so I found this great article on the web.
How to build a battery tab welder for $100.
http://www.ledhacks.com/power/battery_tab_welder.htm
Two of the major components are a very large capacitor. Large meaning, greater than 1 Farad and also a high powered
SCR (
silicon controlled rectifier).
I was able to find some needed items for a great price recently. Here they are:
That cap looks like a Pringles potato chip can!
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