This techniqee used to be to break down the nickle bridges in NiCad cells
when they went shorted internally. Most capacitors would not have the
capacity to actually weld metal.
Most people do not know capacitors have a max. ampere capacity rating.
Mostly it is not required to know.

"Stuart" wrote in message
...
Saw an article in an electronics mag where they charged up some biggish
capacitors and used them to arc-weld battery packs.


In article ocal,
J. Clarke wrote:

The trouble is that they aren't really much cheaper than new deWalts,
and doing it right you need a welder, which costs about the same to
cobble up as a couple of new deWalts.