Soldering stainless.....

[mrvette]

As most guys know, those 18.6 volt batteries we use in all sorts of tools, are nothing but a bunch of C cell size batteries rated about 1.25? volts each, all welded together in series....some time ago I took apart a old left over Ryobi battery and that's what I found..and maybe 3-4 cells did not measure up to any voltage, while the rest were fine....

so to clip that flat/tacked place tab off the defective cells, and solder in 'good' ones from another 'bad' battery....thereby extending the life of the whole unit...

so anyone have any ideas on that?? use plumbers solder? electronic rosin will not work....

been a LONG time since I tried soldering any stainless, and it was always a PIA to marginal results....

so what's today's trick??


:amazed::skeptic:

 

[010752]

I used to make a solution of muriatic acid and zinc and soft solid solder.
Worked very well, but I don't know where you would get the zinc today. The zinc looked a lot like metal a lead roof flashing is made of.

 

[BBShark]

Silver solder works on stainless.

All the tabs I have seen on packaged cells are spot welded.

 

[mrvette]

Silver solder works on stainless.

All the tabs I have seen on packaged cells are spot welded.

Yes, they are spot welded, so to cut the metal so as to overlap and then solder...make a jumper, what ever....and have a 'fresh battery pack'....

the prices they get for these 2 bit batteries is just stupid....buy a freeking CAR battery for 65 bux MAX and for all those others at <5% of the size/capacity it's easy 200% the price....