@Evwan Since it’ll increase the amps correct ?
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Yeah and you’ll have to adjust the timing accordingly
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Hi, does anybody have any tips on cutting nickel. I have a roll ob 5cm x 0.2mm and need to make tabs like these:
Using scissors, I have gotten some not so ideal results. The edges are not nice and smooth. Is it better to use an exacto knife or something similar?
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Use tin snips ftw
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I made a little jig (3d printed, but you could make it out of wood or scrap metal) to scribe lines onto them. Then rough cut with scissors or tin snips, and bench grind or file to the exact shape
I got results a bit better than that with my cheap scissors, they’re relatively new so maybe that’s why. But yes the edges on mine were still a bit rough and required hand finishing
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CANARY Heavy Duty Scissors with Wire Cutter 8.5" All Purpose Industrial Hand Shears for Metal, Wire, Cardboard, Leather, Rubber, Spring Loaded Handle, Japanese Stainless Steel Blade, Made in JAPAN https://a.co/d/4zQTtii
This is what you want. They are the best tool for this application that I’ve found in my years of battery building. When they are sharp (which they are from the factory, and which they stay for a long time) you can slice through nickel with ease and leave essentially zero burr. Rounding nickel corners is a breeze as well.
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There’s nothing wrong with this strategy other than it being a shitload more work 
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I 2nd all of this. They work great with nice clean cuts
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Please don’t try to use an exacto knife for cutting metal unless you want to spend thousands on new blades. They get dull quick when cutting cardboard and need to be swapped often for clean cuts. I can imagine that nickel would have them dull in a few seconds without cutting all the way through
Aside from the recommendations from other people, you could try using a metal cutting disk and a dremel which shouldn’t leave behind sharp edges. It will take longer than using some sharp and good metal snips but it will be easier on your hands at least.
I manegwd to cut the nickel ok with this scissors, they are pretty sharp. I’ll use the dremel to clean up the edges a bit, but it does look good already.
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Thanks for the tip, I might get those for the second battery I’m planing to build.
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I take custom cuts of nickel like this and flatten and debur them also. It’s more work but makes them look and feel alot better.
I set the cut piece on something flat and hard like a cutting board and use something hard and flat but plastic to flatten them by rubbing across the curled cut edges. Then a bit of 100ish grit sandpaper or a fine file on the edges to get rid of anything sharp
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samesies, but I’m a bit less discerning with whatever I use to flatten them. Usually a wooden bench and the nearest piece of steel
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Did some test welds yesterday, the setting was 25ms. Cen someone comment how they look? Did some pul tests too.
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I acquired a common port JBD BMS and want to wire it for bypass discharge.
Is the following wiring correct for bypass discharge? I am not using pack-powered lights or other accessories/peripherals.
B- on BMS <> battery negative (-) lead
C- on BMS <> charge port negative (-) lead
charge port positive (+) lead <> battery pack positive (+)
P- (no wire)
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Yep I want to say that is correct.
I have a XiaoXiang BMS and I have it wired the same as that.
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Perfect, that’s great
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