battery spotwelder

Didn't see a mention of Unitek. It is (or was) a company that made precision capacitor discharge welders for smallish work. They used to be common tools in physics labs for welding wires and foils made of refractory metals. I think they were probably developed to assemble vacuum tube internals.

Don't know if you could still find one, but it seems to me it'd be close to ideal for welding directly to battery cells.

HTH,

bob prohaska

------------------------- Battery tab spotwelders start at around $30 on Amazon.

I will build something I might be able to buy for the engineering and troubleshooting experience. That's part of how I advanced from assembler to machine designer, and technician to circuit designer.

Took a look at the two remaining Energizer AAA batteries from the HF Flash/Utility light and they have "Made in USA" on them. The Duracell's of late have "Made in China". Some older Duracell I still had on the bench were "Made in USA". So not that simple of an explanation...

Jewelers also use capacitor discharge welders.

Joe Gwinn

A *steel* bucket.... A famous DC hardware store had a outdoor sand ashtray bucket that was plastic.

The store burned down.....

A *steel* bucket.... A famous DC hardware store had a outdoor sand ashtray bucket that was plastic.

The store burned down.....

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A requirement here for wood stoves is a steel bucket with a lid for the hot ashes. Holding a carbon monoxide detector over it (outdoors) is a quick way to test that the detector works.