The battery builders club

[Sharky]

Guys will a 30mmx0.2 nickel strip be capable to hold the amps on a 16s5p 30t battery?
So the amps will be about 150 if im correct
Is there a table or calc to look at where i can see the amps a certian piece of nickel is capable of?
Kr

[JoeyZ5]

fuck the corner chompers with this shit hanging off

hopefully this one works, I heard good things about it

[JoeyZ5]

which way will the current be traveling on the nickel? 30mm direction or the longer direction?

[Sharky]

This is s schematic of the series connections

[Skyart]

@JoeyZ5

hopefully this one works, I heard good things about it

I’ve been using that one for about 12 months now, best battery building purchase I have ever made. The corner chomper is useless

[Skyart]

@Sharky

30mmx0.2 nickel strip

Depends on gow you configure the pack, but yes, you should be able to use a those nickle straps for 150amps

[JoeyZ5]

Ohhh I remember it’s this layout, you are good with 1 layer of 0.2 x 30mm everywhere except the side where the series connection is on the end and makes a U turn. You will need to use many layers or wire/flat braided cable.

[JoeyZ5]

I just realized that’s my drawing of the nickel.

Just fold the nickel over the the side like shown with fishpaper underneath and use 2x 12AWG or a thick flat copper braid in place of the black line.

[Sharky]

Great thx very much tht makes my pack nice and compact
Thx again man!!

[Darkie02]

@Fosterqc

I thought the main reason was to make it so there was some movement if the wires get tugged before they are ripped off (assuming you have shit solder points)

Nah you f%^* the cable befor you rip off the solder point the heat and solder make a weak brital point were then converge with the cable

It gives you a bit of slack to cut strip and dress nicely and any imperfections of length are only 1/2 as noticeable because there shared between the to and return as well as easy to hide by altering the radius of the turn.

Would you drive a sports car with lose wheels. Why solder if you make s*+% connections. Fix the cause not part of the faults thay cause

[Sharky]

Is there a good way how i can calculate how much amps a certain piece of nickel can provide?

[JoeyZ5]

Here is a good tutorial:

The battery builders club

Here’s an extremely easy way to calculate whether you are good with nickel. Divide the expected max continuous current by the cross sectional area of your thinnest point that is normal to the direction of current. 05A / mm^2 is overkill 10A / mm^2 is good 15A / mm^2 is okay 20A / mm^2 is bad 25A / mm^2 is awful In the image below I am expecting 8x 20A through an area that is 65mm by 0.15mm, or 160A though a 9.75mm^2 area, or 16.4A / mm^2 which would be concidered an okay setup (this is a …

[Sharky]

Thx very very much thts exactly what i was looking for

[SJReason]

Do these welds look ok I had to go pretty high joules to get the second 0.2 layer stick

[ZachTetra]

Looks too slow, needs more current but less pulse

[SJReason]

Thanks

[filipandre]

is this a good way to build a pack? is there any weeknesses in this layout? I will use one layer of 0,2mm 25mm wide nickel and 21700 cells.

[JoeyZ5]

Looks good to me, though if you want it to be more square, you can do a 12s6p layout like this. Its a lot more work but it fits into a pelicase better.

[ZachTetra]

You can stagger it, that gives you a little better of an aspect ratio

[JoeyZ5]

@ZachTetra

You can stagger it,

It would probably make using 25mm nickel easier too