DIYbanter - View Single Post

J. Clarke[_2_]

In article om,
says...

Stuart wrote:
In article ,
Stuart wrote:

In article ,
Josepi wrote:

This techniqee used to be to break down the nickle bridges in NiCad
cells when they went shorted internally.

Possibly but usually you give them a very short burst from a car battery.

Most capacitors would not have the capacity to actually weld metal.

Remember you're only trying to spot weld very thin metal. I'll try to
find the original article if I can.

Elektor magazine Nov 2006.

Guy used eight 10,000 microfarad capacitors in parallel.

Does the article say what the voltage rating on the capacitors were? A
single 10,000 uF electrolytic capacitor rated for 160 volts is about $50.

Capacitors of several farads are readily available for not insanely high
prices. Battery tab welders have been made from the 2 or so farad 20v
"stiffening capacitors" used in car audio systems.