MAN THIS THREAD IS LONG…
Im going to build my second esk8 battery and read pretty much the whole thing… pretty insteresting how the stardart has gotten better through the years!!
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I have a few questions that i might have missed the answer for:
How much amps per spotweld? (ill be using 0.2mm nickel)
Recommended Jules for stacking 0.2mm Nickel?(only 2 layers) (ive read somewhere that between 90j and 100j)
I´ve not seen how you guys solder the “S” cables on the nickel flaps without damaging/burning the fishpaper below it.
And if i understood correctly, the “S” connection “Takes” current away from the nickel. So with enough “S” connections between “P” packs I dont need to double stack nickel?
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I know everything else that its writen on here so ill CONDENSE THE MAIN SAFETY POINTS ive read:
-No welding in the center of the negative pole (Internal welds can be damaged) so weld arround it.
-Fispaper. Probably as important as the cells themselves, insulate all pgroups individually. Kapton tape on top to fix cables in place doesnt seem to have a sgnificant impact on abrassion resistance.
-Rounded nickel strip, If its round it cant pierce throught the fishpaper.
-Nickel flaps. If folding nickel over the cells (Recommended for “S” connections as it doesnt heat up the cells) fishpaper under the fold.
-No balance wire crossing if possible. If they rub and break, fire 
If they have to cross, add fishpaper between them and fixate them with kapton tape.
-Flexible “S” connections are safer as they are more difficult to break. Copper braid isn´t ideal so if you have enough space use silicon insulated wire.(14awg-12awg seem to be the standart)
-Workspace. Work in a clean and metal free workspace, shorting
cells its no good.
-Plan ahead. How are you going to put the balance leads?(draw it), Draw cells layout.
-Check other designs from proffesionals!
I think this is about it, please correct if theres anything wrong and if you think i missed something!
@glyphiks @BenjaminF please guide me in my ignorance 