It’s not precise according to what I recall.
If you connect each battery in a cell to the series connection point that will be ok(for example if you have 4p you will have to connect each cell 4 times to the series connection point).
Since we are talking about one strip of nickel for a cell and assume you take the series connection point in the end of every cell, all the current will flow through the nickel strip at the point of connection to the last battery of the cell(where the series point is)
The first battery nickel strip connection though will handle 1/4 of the current and the second one 2/4 and so(assuming 4p).
Therefor you should have enough conduction in each cell as for the series ones.
Nice bed time story 
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i’ve ben using 10mm x 0.2mm nickel on my 12S5P all year. How you stack your cells is just as important as what/how much nickel you use because you don’t need two layers of 10x0.2 if you’re bridging the series connections with two parallel rows of nickel that are bridged with each other using short strips.
that’s for a non-flexible tightly packed battery though. for evolve packs and other single layer packs i use either 12awg or 14awg 1" jumpers between twin P groups for flexibility.
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When you say short bursts of 40-50 amps, why so low? What are you drawing at a constant?
Ah I was only referring to one esc. The most I ever saw on my dual 6374 12S setup was 47A x 2 or 94A. Mind you that was for only a split second.
My new build is all the same hardware but 13S instead of 12S so my amp draw will be a bit less anyhow.
I’ll report back and see if it gets hot. I’m thinking it’ll be fine
@long haired boy what’s your take? Think I’ll be A OK or will I die a firey death?
Im using the diagram wich the moderator posts dont know wich let me find the link
I just have 1 layer everywhere and didnt even made the terminals double layer also it was a pain in the ass to solder on the nickel I had to use a flame powered soldering iron…
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Do you have a picture of you using the 12 or 14 guage wire?
Are you saying to solder copper wire to some nickel strips and then weld those strips to the battery? What size wire would you recommend for 2 motors rated at max 95 amps each?