thats purely along the top, there's something I wanted to show you with these 18650 batteries,
that I'm not sure that some of you are aware of, and it really in my mind, it needs to
be addressed, when you're creating a battery for like an e-bike or what have you.
Because of the jarring or the knocking of the batteries against each other and especially
as your soldering them that you wanna make sure that your being careful.
So I just want to let you to be aware of something.
what I'm gonna do, is I'm gonna cut the protective casing off of this one.
So here we have the battery and this instance we have a little, let's zoom out a little
bit.
A little plastic cap on top which comes off quite easy.
And what i wanna do, so that's the positive terminal, this is the negative, but if you
notice, its all one sheath, so this is negative as well.
I haven't tested it, but only logic says that this is negative.
So Im wondering if this top bit here, is in fact positive and this is negative?
so What I'm gonna do is get my multi-meter.
Re-establish the camera, so ive set the meter, now what im gonna do is touch this part on
the body, ok... so that that is negative.
So now I'm going to touch this edge, this outer rim and the center piece.
So as I thought.
So this gap here when bridged, will short the battery, so you need to be really careful
in the wiring and where the wires rest, because if
they're resting on top and they're laying flat and they're breaking through the plastic,
what's going to happen is you're going to have a short or a fire.
And if you got this thing between your legs, s you are riding aiong on your bike, that's
not going to be good.
So what I have decided to do is to take some extra precaution and cover these in some shrink
wrap tubing, or some heavy duty tubing, but I think it is just standard heat shrink tubing,
but it should give it some nice, much heftier protection than this flimsy stuff.
it might even be mylar, i don't think it's mylar, it's weird, i'm looking at the viewfinder
and doing it all upside down.
So yeah, next step is I'm going to show you how to protect these.
here I have some electrical tubing, some protective tubing.
I'm going to open this up, pop that down in and I'm just going to overlap it by about,
just over 18th inch.
This end as you can see it's pretty long, so what I'm going to do is im going to
cut this so it's nicely overlapping each side.
I'm allowing for a little bit of shrinkage, I'm going to center it inside and that should
be enough to protect it, and this really is a lot thicker than this and I would rather
have these in my setup as a battery than a bunch of these where they could absolutely,
very easily short out.
I have not heard anyone talk about this on any of the videos.
In taking apart the battery packs the other day I thought, wait a minute.
I think the side is also negative.
So I wanna show you the effect, but I don't want to burn out my battery, so I have just
a strand here.
Im just going to touch this across the two.
See!
And that's purely along the top.
that's ridiculous, so yeah, I'm glad I discovered that.
What I need to do is..
It actually welded.
But that could
start
a fire.