this post was submitted on 07 Apr 2026
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Cell welder advice? (lemmy.ml)
submitted 1 week ago by solrize@lemmy.ml to c/flashlight@lemmy.world
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I'm wondering if there is a decent affordable cell welder. Purpose is rebuilding tool batteries and that sort of thing on an occasional basis. K-weld has been recommended but is pretty expensive and might be overkill. https://diy500amp.com/ has a bunch closer to my price range but might be underkill. Any thoughts? Thx

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[–] solrize@lemmy.ml 1 points 3 days ago

Wow I didn't know about car audio capacitors. What capacitance did you use? What voltage, typically? They are on the expensive side, but impressive. I bet they could also jump start car engines. I'm not keen on using a lead-acid battery so capacitors seem like an ok alternative.