Lithem battery bus bars

[Sprinter 1 cup]

Hello electrics 3.2v cells
What is the longest bus bar / wire connections one can use?. To connect the 4 cells to make 12v as only seen packs of 4 ( ####) or more ! flat side to side not end to end and not 2 up and 2down.
so I would like to put my Chinese battery in wall of van , stud wall made of 2x4 . Can put vent in outer wall
So 2 cells over and 2 under each other ?. wall only take 2 cells in each side by side flat on studds.

So 12 volts sysems need the thickest wire . So can be 24 v system if this works. Can ,should I put battery cells upside down to use shorter tails / bus bars but will need upto 8in bars but if upright upto 14 inch bar at each end to connect cells 2 and 3 . all cells upright can cover bar with with sleeve.. but it will go through holes I will drill in studds.
++++++1_4--------
(2_3). Cell lay out.
TIA.
Yes or no will do guys

 

[SquirrellCook]

It's not the thickness of the copper, rather the cross sectional area. Also note all copper does not have the same conductivity. The difference is small so not really worth worrying about.
What you need to think about is the maximum load you will put on them and how hard you'll going to charge them.

 

[Sprinter 1 cup]

200a bms
Charging at 30 amp b2b
3kv or 5kv inverter charger 30a
Solar at 200w upto 10a so about 40amp at any one time.
The bar with sleeve is better than a 30mm cable also cheaper
So 500x25x6 mm bus bar !

Kingsmill Industries 25mm x 6mm Hard Drawn Copper Bar (1m Length)​

• Part Code: CBHD2560
• Stock Code: 0060-6388

• 25mm x 6mm copper bar
• 150mm C.S.A
• 1m length

Compare

Specification​

Dimensions	(L)1 m x (W)25 mm
Guarantee	1 Year
Length	1m
Material	Copper
Packaging Types	Length
Product Range	Conductors Hard Drawn Copper Bar
Standards	BS 2874
Thickness	6mm
Unspsc	39121721
Weight	1.34kg
Width	25mm

• £34.50 For 1
  £41.40 Including VAT

 

[Sprinter 1 cup]

So now made shower walls 53cm wide 9 cm thick and 3 shelfs 110cm this will take 3 s4 just in front of rear axle. ! Fix in floor and roof
Put studds at the same hight 25cm plus 2 cm stud.
Both walls coverd in18 mm ply

 

[st3v3]

I'm sure I've seen someone hammer flat a copper pipe lol.

 

[SquirrellCook]

I'm sure I've seen someone hammer flat a copper pipe lol.

That sounds illegal!