What’s bad about hot welds? Are they inherently weaker than non-hot welds?
To answer this part, EUCs works with a 4 system function that all has to work in unity. Modded EUCs (creating a battery for the EUC for range) is not what you want to do. The EUC has to take the amps of the battery, use it on a non bypassed bms, which operates for both the gyroaxis and the motor (simultaneously). This is where the manufacturer has to make sure your battery functions with what it’s set for. Any extra power, or anything less, will end up with massive failures/deaths.
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Dude, congrats on the kweld, but why are you holding that cell with vise grips? Careful not to damage the wrap
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Lol I too wondered this, I would at least put a towel or something between the case and the grips
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Ah it was barely gripping them, just holding the cell up as the other side is destroyed. In the future I definetly won’t be doing this lol
Those cells are dead anyways m, that’s why I’m using them
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No, but hot welds lead to hot battery internals, and hot battery internals can lead to Very Bad Things.
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Are there any cheapish 21700 cells that are available on the market second hand similar to batteryclearinghouse?
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These exist… little bit controversial using them in esk8s though
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Very aware of these, but I meant like $1-$1.5/ cell used in some sort of lawnmower battery or smthn.
how wide is a p42a with fishpaper per group
trying to work out the size of a brick battery (biggest to fit in a trampa monster box with 2 vescs)
edit: 99% sure a 12s6p p42a brick will fit in there
Maybe not exactly about battery building, but I think it’s battery adjacent. Very interesting video:
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top or bottom method better for brick battery (or no difference)? (trampa monster box so no flex should be fine)
top = 1st layer is parallel connection 2nd layer is series
bottom = 1 30mm strip to connect both parallel and series
thanks
my 10s6p is sad to hear that…
I know I should of went either 10s12p or 12s10p🥲
Bottom one for sure. Top one has weaker nickel on nickel spotwelds. Get 0.2 x 30mm nickel and you’re set up (:
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awesome thanks man
sadly due to the size of the monster box you cant just do 12 rows of nickel but need to fiddle around with it a little
9x8 cells seems to be the best way to do 12s6p with it
Heating the mettle makes it brittle. A hot weld is a strong weld but compromise the structure of the metal around it. Esk8 is a vibration heave I environment the and vibrations is the 
that espouse any week or brittle parts by adding metal fatigue (tiny cracks) until catastrophic fails.
Go even hotter and you vaporise the nickel and blast a hole in it
Think goldy locks and the 3 bares not to hot, not to cold, just right.
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I thought putting fuses in parallel was a no-no
I dunno. I’m sure the designers of industrial fuses like that know how to do it. Multiple fuses inside a very robust encasement, surrounded by sand, seems pretty kosher to me.
I just thought it was a really cool video. I had been subscribed to that channel for a while and he just recently popped back up after a hiatus.
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