Wow. Scary. We’re gunna need a dead people thread soon. Some by board some by zaps. The dead by board section could have a sub section with bad receivers and bad can bus connection wires. It’s a dangerous hobby/sport for sure.
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Hey whitepony !,… the Cells are Identical, , …I was told they come out of the Tesla “Bare”, …Okashira is the one who Shrink wraps them,… was out of blue shrink wrap ! . All measured identical within 1/100 … With Insulating rings installed !
I agree,Hot-gluing packs make them ridgit
I also did not put a BMS, will check them periodically.
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ah, ok, thought you might have used different cells there! cool, youre a step ahead of me with the rings and hot glue! 
…Your “Pathing” the way for many builders whitepony !!
I will Try to explain my Bending Pack : If you look closely at the top side of pack
you will see a Black Wire,( did’nt take a Pic, sorry) this is my 10G Flexible Series Link. The Wide Hot Glue Joint (middle point of wire), acts as Kind of a.Pivot point. The 2 batteries of Left of joint (top&bottom) were lubed up before I applied Hot glue,so did’nt stick,but formed around battery and only sticking to to right side batteries. This created a sorta Cupped joint and no friction between batteries at joint if Pack bends .
Joint fall just about in middle of the board.
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Hey Randyc1, awesome build. Love the pack. One question, where did you get that copper wire from (the stuff on top of your nickel strip)? I have seen some on ebay. Just wondering where you got yours.
Love the bending idea! For my custom packs I’m making, i am separating them in to separate packs which then all connect together through an XT60 wire harness.
I actually found some scrap pieces of Solid 10G Electrical wire at work and just skinned it .
Nice.
I’m gonna have to do something similar for my pack so my thin nickel strips don’t burn up.
What is the thing attached to the negative terminal on the big battery?
Could you explain your spot welding setup? I t looks really interesting and i might do something similar.
No i meant the big 12v battery used for doing the spot welding.
Oh sorry , that is the device that allows you to spot weld with a car battery. Riba at "endlessphere forum "was selling them.
Awesome, how much did it cost?
He doesn’t sell them anymore as far as I know. I am building an Arduino spot welder which I may sell kits and completes for. Riba may be open sourcing his project soon which will be good.
awhh, the flex idea is awesome! 
its insane how hard we have to try to get all these details and secrets from you 
now its you who inspires me for my next battery. the flex points are generally a good idea, there is no need for any “outer” serial connection by nickel strips tbh, can just always connect all parallel packs with 10AWG wires for example. the only thing I was afraid in the past was excessive rubbing of cells among each other which might destroy the insulation … but your hot glue protection will probably work great! 
Really nice build the bending detail it’s nice I did something similar using flat braided wire in the 3 to 4 cell connection. Can get the wire here if anybody want to try it in a future build.
After seeing this picture of an Evolve Board , I have allways wondered how Evolve built there batteries for flex ??
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Thanks,I hope it works out great also ? The only thing that worried me was the "heat " from soldering?,…spent more time on some than i would have liked, i need a stronger solder iron.
When i build next pack, since my nickel is 12mm Wide i might Try soldering wire along edge of strip BEFORE I spot weld ,eliminating any heat at all??
