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Off subject, kind off: home brew spot welding NiCd batteries


 

Hello everyone,

Does anyone have an experience with spot welding tabs on a subC size NiCd
batteries? I have a stack of ten batteries which were connected with nickel
plated iron (?) tabs, welded at four spots at each end of tab, but a tab
came loose on one cell.

I was thinking of using large cap (10,000 mictoF or so), charged to 50 V or
so, a suitable switch (perhaps mercury displacement) and short, thick and
solid wires as electrodes. I need to make only four welds, so 'electrodes'
can be consumable.

I do not intend to break any new grounds, looking for someone's prior
experience.

Thank you in advance,

Miroslav Pokorni

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