Recommend Spot Welder

[redpoint5]

Originally Posted by hayden55

2mm thick nickel strips? Muh gawd thats thick. Why?

What I really need is for the batteries to come with threaded terminals.

I've got something like this for my Maxwell supercaps

[freebeard]

Tesa and Westinghouse would recognize the bus bar construction.

Meanwhile, they're working on solid state batteries configured as a card, that can be stacked and compresed together into a deck of any height/voltage.

https://www.nasa.gov › aeroresearch › nasa-solid-state-battery-research-exceeds-initial-goals-draws-interest
NASA's Solid-State Battery Research Exceeds Initial Goals
7 Oct 2022The possibilities are pretty incredible." This illustration depicts the inside of a cell used in SABERS's solid-state battery, which is made primarily from sulfur and selenium. Unlike lithium-ion batteries, these cells can be stacked on top of one another without encasings to separate them. Credits: NASA New Developments

From TFA:

Instead of housing each individual battery cell inside its own steel casing, as liquid batteries do, all the cells in SABERS’s battery can be stacked vertically inside one casing. Thanks in part to this novel design, SABERS has demonstrated solid-state batteries can power objects at the huge capacity of 500 watt-hours per kilogram – double that of an electric car.

“Not only does this design eliminate 30 to 40 percent of the battery’s weight, it also allows us to double or even triple the energy it can store, far exceeding the capabilities of lithium-ion batteries that are considered to be the state of the art,” Viggiano said.

[Should be biking]

Have you looked at the Glitter 801B? It worked well for soldering up a bike battery pack.

[redpoint5]

Originally Posted by Should be biking

Have you looked at the Glitter 801B? It worked well for soldering up a bike battery pack.

My preference would be some benchtop device, but for some reason they all are rated worse than the battery devices. Could be some sort of uneven distribution of shill ratings, but it has me curious.

I also wonder why the benchtop devices are at least twice as expensive? Shouldn't not having batteries reduce the cost? Corded things usually cost less than "cordless".

[redpoint5]

Well, I pulled apart the "broken" welder today and measured the voltage of the battery at 2.0v. Couldn't get it to charge when plugged into the USB C charger.

Tried using my multipurpose hobby charger to charge it, but it complained that the voltage was too low.

Used my switching power supply to bring voltage up enough to where my hobby charger would charge, and then boosted until the regular onboard USB charger would take over.

Unit is as good as ever, which isn't great. Doesn't make good welds. Good chance it's the operator.

[hayden55]

Have you try tack welding with car batteries and some sort of rod that is appropriate for nickel? I would try it in an unfinished room like a grage or outside first lol but its doable.

[redpoint5]

Originally Posted by hayden55

Have you try tack welding with car batteries and some sort of rod that is appropriate for nickel? I would try it in an unfinished room like a grage or outside first lol but its doable.

Only with a screwdriver, carelessly working on a car near the battery.

I'll practice a bit more with this unit. Initially I had been using lots of pressure and maximized the tip surface of the welder, but apparently you're supposed to use light pressure and the edge of the tips, creating a higher resistance connection.