@Rojitor Not disagreeing. But make sure you’re comparing to compenents experiencing the same abuse. A bicycle or scooter with rubber tires and suspension will not see anywhere near the intensity or frequency of vibrations a longboard will
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There are plenty of ways to skin a cat. But barley paper is an easy and relatively inexpensive way of providing insulation and peace of mind.
I will admit I could save myself a lot of work by only trimming corners that are necessary, but i like to do them all… because it looks good 
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What are the marks on your fingers? Burn yourself with a short?
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Yup , for distracted by the lady friend and maybe one of the 3 beers. Shorted a 2s3p group for a split second. So broef it didn’t even cause burns, just sorta sierd the outer most layer
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I don’t know if I would trust that dinky little connector and wire with 4A.
I got all my charge ports on Amazon, what style do you want?
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Rounded nickel or not, it wont move or rub aggainst anything since its welded
If the forces are so strong (impossible from vibrations) the welds will break and only then it will rub minimally but you will notiece that really soon as your battery wont work properly lol
Rounded corners are just battery porn
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I must have missed this, but I am genuinely interested in why you think barley paper is not necessary. how can I better protect my packs from vibration chafe? I tried potting cells once but it was a ton of work.
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Nickel when welded does not move, cells neither so no friction anywhere
Its another thing if your battery can move and is not a solid block, or if its flexible
The fishpaper is just an extra safety that became a standard on here, if you look at any production battery you wont see it almost anywhere
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Round corners and barley/fish/whatever are absolutely necessary in many many occasions.
Using it everytime all over it is what I disagree.
Rounding every single strip is a waste of time imho and wrapping the whole thing with barley useless or even counterproductive depending on the pack. Paper is a great power insulator but also a great temperature insulator. Homeless people often wrap their bodies with newspapers to keep warm during the winter.
Wrapping the whole p groups in barley encapsulates the heat inside. Cells work better warm, that’s a fact. Cells die when overheat, that’s a dangerous fact. Kapton, eva foam, fiber tape etc do not cook that much the cells while protect and pad as much as those. Spacers work as radiators. I use them everytime I have the chance. I try to let them breathe somehow sotherwise.
That’s just my opinion based on my tests which have been many and my experience building packs.
As i said earlier i will not argue with anyone about it. I have my ways and you guys have yours.
Peace 
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You’re forgetting about the impacts, handling of the pack out of the deck. There’s no protection, so an enclosure that puts pressure on an area could be pushing a corner into the space between the positive terminal and side wall. Multiple users have posted pictures of shorts from corners.
What happens on the bench is not what happens on the street. You should build to protect from those things. Ideally, even with a complete fracture of the enclosure, the better should not be a risk of fire.
If you cut the nickel correct that shouldnt be possible
Also who doesnt use heatshrink?
Also packs usually are the part that is more or less always in place and escs and other parts are switched around more often
Anyways fishpaper is good as an extra layer of protection but its not critical
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good points
I agree a lot of it, and I don’t wrap my p groups completely in paper, but I do stick it in places where I want to be certain something is insulated, like between two touching p groups and between the balance wires and the cells
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Imma fuse it anyways…looking for a 5.5 x 2.1mm.
update
on second thought I think you’re right…lol, just ordered a 1.5A charger 
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In the past ive wrapped an entire P-Group in fishpaper. But the heat insulating potential was always in the back of my mind. So I gave this method a try. Takes slightly longer but also saves material so its a wash in my book.
How much difference does it makes covered in PVC shrink and placed in an enclosure? No idea. Might not make a difference at all
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I do that too. I use paper where I want insulation.
I use it very often actually.
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PVC shrink makes the cells stay put. Torsions can make welds loose. Shrink put tight inside an enclosure is a very good quality guarantee.
The pic you posted has not full paper wrap. Those cells can breathe freely. That’s a good insulation. I agree with that method. I’d add shrink too.
When I built my 3d printer The engineer PA-09 crimper was highly recommended. it seems a lot of people go through this “wish I never bought a cheaper one first” moment as illustrated by this guy:
I only used the PA-09 so I can’t do a relative comparison. but it’s good. 
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I don’t see it necessary to argue, but differing opinions discussed in a constructive manner are definitely useful to this thread in particular.
I personally don’t see the thermal insulating being an issue… the cells are generally glued together in a reasonably air tight environment, once the temperature rises in that environment the cells lose any chance to ‘breathe’.
I do agree that fully wrapping the p groups is generally a waste of material and unnecessary, but in my experience it is the fastest and easiest way to do it 
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It’s all about constructive criticism. Different points of view and the endless search for the best option for everyone.
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