Resistance Welding on Copper/Nickel Bus Bar

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What exactly is "Copper/ Nickel"? Never heard of it.

Is it.. Copper.. or.. is it nickel?

Cause if it is a mix of the two... it is called ( by engineers, ) "CuproNickel".. and is already invented.

An alloy, like brass or bronze... Used in heating elements all the time in design. Not used electrically much if at all.

How can you say it withstands the test of time? Have you don't long term testing? Didja take a resistance in a controlled test? Did ya heat it up red and gauge the change in resistance? Little easier than.. "trial and error"... this stuff called " Scientifically tested and certified engineer designed... "... It, ( Cupro-nickel) has a very low temperature coefficient of resistance and medium-range resistivity. Very important when considered for a pack main buss system.

What is it? Copper, Nickel, Cupronickel.. or this new fangled, .. I never .. heard of... called "Copper/Nickel"?

Shoot it with an XRF and tell up. Shouldnt be hard to do. There should never be a "?" in the design of a lithium pack. There is no room for "trial and error".

Where can I get some of that "our busbar'?

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