Any interest in DIY battery tab welder?

[RobertB]

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@RobertB

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@DavidEF

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i have a question.everybody advice me. please.
if i don’t spot welder. but i Place button on top of cell only.Will it works?

and 2nd choice
if i use little magnet place between button and flat cell .Will it works?

1. It will possibly work for low drain applications where there is a strong spring to hold it in place, and the button top never gets any side load (twisting).
2. AFAIK, a magnet won’t do any good, as the button top is non-magnetic material. (I’m likely wrong about this, though.)

Thanks.i wish use with haikelite mt01 or manker mk34/35  
Is magnet can works on that.?

Don’t use magnets on the MK34, or the Haikelite MT01. Magnets ok on MK35

What the trouble when i use magnet on mk34 or mt01?

Look at the 4th picture in this thread. ENEDED

If you had loose magnets on top of those cells, they might dislodge when you screw the light back together, and potentially cause a short. That type of light needs button tops or solder blobs, which is what this thread is about with the DIY spot welder.