11-25-2022, 12:07 AM
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#11 (permalink)
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Human Environmentalist
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Quote:
Originally Posted by oil pan 4
May need to build your own I bet there's a few on youtube.
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Yep, was afraid of that.
Every now and again it surprises me when I need to invent something, but then again those are market opportunities. You'd think making battery packs was a common enough thing there'd be a fantastic tool.
I did invent a white LED headlamp in 1999 by soldering in my own resistors and LEDs into a bulb I crushed and wired everything into.
Invented supercapacitor battery per Lasersaber's success.
I'll reiterate that solving the problem that most troubles you and making it available for purchase is probably the most straightforward path to financial wellbeing. I call those million dollar ideas, which I used to dream up with more frequency because youth is more creative. I'm down to about one a month these days.
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11-25-2022, 01:56 AM
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#12 (permalink)
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Master EcoModder
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Ideas are a dime a dozen. I've had a few myself.
First principles first. Does it need to be welded at all? Would a gas-tight connection suffice?
What solution would en-tool you to face additional challenges in the future?
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11-25-2022, 02:45 AM
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#13 (permalink)
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Human Environmentalist
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Eh, you start with screwdrivers and the collection grows from there, and before you know it you've got strut spring compressors, battery capacity meters, and the contemplation of an oscilloscope.
I'm trying to pull current sufficient to start a vehicle from small cells in series. Good connections are required.
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11-25-2022, 08:31 AM
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#14 (permalink)
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Master EcoModder
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A very informative video.
Link to a 18650 spot welder
https://www.ebay.com/itm/30442246160...Bk9SR_a3yuuVYQ
This is not a endorsement.
I have no personal experience with this welder.
Though it looks like it gets the job done…
>
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11-25-2022, 10:46 AM
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#15 (permalink)
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Somewhat crazed
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Many use the transformer out of a microwave oven, but I am fairly certian there is some disassembly and rewinding involved. Harbor fright used to have a decent cheapo spotwelder, not good enough for production but adequate for home use. ( low cycle duty)
I have a parked 2.5 kw 48 volt server UPS that probably has transformers capable,, but it weighs a hundred pounds
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11-25-2022, 01:50 PM
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#16 (permalink)
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Corporate imperialist
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Quote:
Originally Posted by Piotrsko
Many use the transformer out of a microwave oven, but I am fairly certian there is some disassembly and rewinding involved. Harbor fright used to have a decent cheapo spotwelder, not good enough for production but adequate for home use. ( low cycle duty)
I have a parked 2.5 kw 48 volt server UPS that probably has transformers capable,, but it weighs a hundred pounds
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I have that one it's my sten gun spot welder. It can to a several welds before it needs to cool off for a while. Still only about a 3% duty cycle.
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11-30-2022, 09:43 AM
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#17 (permalink)
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Master EcoModder
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2mm thick nickel strips? Muh gawd thats thick. Why?
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11-30-2022, 12:41 PM
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#18 (permalink)
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Human Environmentalist
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Quote:
Originally Posted by hayden55
2mm thick nickel strips? Muh gawd thats thick. Why?
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I don't know if that's necessary yet.
I'm trying to start a car with these cells, so I need to be able to pass 250 amps through them. |
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11-30-2022, 02:12 PM
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#19 (permalink)
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Corporate imperialist
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I think most of the spot welders for sale are geared more towards hobbyists making batteries for "toys" like remote controlled cars, drones, ect.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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11-30-2022, 03:19 PM
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#20 (permalink)
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Master EcoModder
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i would think 2mm would be bolt on or you will need to spot weld and stack multiple strips. i think my headway cells that will start a car were like $50 with the 1.5mm thick bolt on nickel strips
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"I feel like the bad decisions come into play when you trade too much of your time for money paying for things you can't really afford."
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