Can anyone make a 12s4p flexible battery like a trampa or nyc but only US ?
I have a torque boards 12s4p battery but want a flexible design
I wanna fit it on a db core flex longboard
Both are great battery builders. I’m sure one of them can get you what you need.
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may be a bit early to even mention but i’ve got cells on the way and was going to offer P modules, backed with PCB, cap insulated, fish papered, clear pvc shrinked. all ready to assemble by builder.
so idea is to ship P groups ready then the builder would just solder series connections as they see fit according to their build.
i won’t have cells until well into november.
inb4 someone mentions sharp nickel on positive end, yes i know, they’ll be rounded off in future packs, thank u.
some photos to get an idea:
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@thisguyhere Noice. Was planning to get something like that for tip toeing into battery building. Ill keep an eye out for when you decide to sell a few.
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All looks great but shouldnt you solder the nickel to the pcb instead?
yes and no.
first, i’m not comfortable with how thin the copper layer is on the pcb. it should carry the current fine but the bigger issue is because it’s so thin, you can very easily pull off the nickel.
during this build, after welding nickel directly onto the pcb, i tugged on the nickel lightly and it just came right off.
so…a nickel to pcb copper weld is weak AF. a nickel to nickel weld, provided welder is set correctly, is WAY stronger.
and because these P groups are then PVC shrinked, P bus connection is secured down.
i’m going to demonstrate all of this in a future post once i’m ready to offer it up.
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I am basically going to do the same thing for my build but minus the PVC clear heatshrink. And probably solder the nickel to pcb
Looks good though
Except here it looks a bit dodgy
good eye. looks like it’s lifting off the pcb a bit. i think that was the pack where the nickel pulled off the copper. i’ve got all the S connections taped off so no danger of a short (fingers crossed).
– edit
actuall, i pvc shrinked each 6s4p rail again after series connections were made.
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Yeah I have spot welder to a PCB before, I had mixed reviews
For me it actually spot welded much easier than nickel to a cell. But yeah its not strong enough imo or it is but it burns a bit of the PCB
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for sure.
i’ll take a video of nickel weld coming off the pcb in the future post, it’s kind of alarming.
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just off eBay, but like 10 meters at a time.
this is the last batch I got
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yep exactly, and it takes no force at all to pull it off, right?
Im trying to buy a 12s4p battery pack that’s flexible and have the enclosure with a bms and charge port🤑
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https://www.unikboards.com/fr/boutique/batterie-flexi-cell-bms-ultra-slim-and-flex/
@okp Is in France, but he might be willing/able to ship it to you.
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I’ll do a video in a bit.
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Something like this maybe?
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15ms pulse on malectrics
And on 20ms blows holes in nickel
The strength was much worse than I remembered