The battery builders club

How-Tos & Esk8 mechanics
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24532

Copy that. I will match the grade on the modified edge to the machine edge.

24533

@jack.luis is there a reason u downvoted this comment?
@Evwan

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24534

yes

24535

Can u say why spot welding nickel to nickel is not good? @Evwan

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24536

can you stop pinging me

24537

@Evwan you can’t say? I didn’t think there was any reason. Years of spot welding stacked nickel …makes me think either they dont know what theyre talking about or just negative people.

24538

We disagree with the statement you made. Isn’t more complex than that.

24539

Spot welding nickel on nickel doesn’t work fine? . Can u elaborate? It’s been done like that pretty universally by diy people for ages.

24540

No.

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24541

Yea I didn’t think either of u would. If u find how welding nickel on nickel is not good please post it.

1 Like
24542
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24543

It works but it’s an outdated method of building and creates significantly more points of failure in your pack. It works, true but is it the most robust method when building a battery? Not even close. This is why it fell out of favour.

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24544

A diagram of your pack orientation would be helpful but you can pretty easily figure your ampacity using the current conductor table. 0.2mm x 10mm nickle will comfortably do about 30 amps cont so figure out which way your current is flowing and do the math.

Assuming you’re doing a standard brick pack config in 8p, that means you’ll have ~155 mm length of nickel. So:

155÷10×30= 465 amps cont. This is plenty of headroom.

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2 Likes
24545

Awesome thanks, I didn’t think I could just devide the nickel sheet by 10mm and calculate, but it makes sense.

Is spot welding the last p group to a copper bus bar an acceptable method?

24546

Good luck hah

I have tried this and its nearly impossible without a laser welder

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24547

Yeah, but sometimes you gotta do what you gotta do. :grimacing:

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24548

Yeah battery building is definitely something you can do in a casual manner

24549

That’s why I’m such a notoriously casual guy

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24550

Not many people know this but Benjamin here used to be a drunken mobster

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24551

Everyone in here who us saying “dont stack nickel” has done it plenty without issue. Personal skill issues is where faulty welds come up.
Is it ideal? No. Is it fine as long as you test tune and verify your welder settings, yeah.

This is much more driven driven by a grudge against one member for past dumdums, than by battery building ideals.

AFAIK, welding nickel to itself with no can under is more problematic than stacking on a cell.

2 Likes