Might just have to bite the bullet and test it out. Ennoid looks good, but it’s 170USD 
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yep, they are expensive. Thats why most people here use a LLT or a Daly for 20€ 
I believe I have one of these on hand if you haven’t come up with it yet.
I had this thought while I was loading up a 2s2p NESE module with P42As…
What happens if you were to make a pack with say, 1x 4p group and 1x 2p group?
Are you effectively limited by the current on the smaller p group?
Depends on the cells. A 4p of one cell could equal the amp limit of 2p of a different cell. You could even select the cells to give both p-groups the same mAh and Amp limit. The difference is how evenly the current is distributed by the BMS; between 4 paths or 2 paths.
With the same cells, if you series a 4p and 2p pack yea you’re effectively limited by the weakest part, this is referred to as a “bottleneck”
Anyone use this lipo with their maletrics?
Discharge: 70C Constant / 140C Burst
You would want two of these in parallel.
sorry, i didnt see the reply. I already did 
I only made it for the one battery I built. Its not hard to make one in fusion360. I would recommend getting the battery cell builder plugin someone here made to model battery packs easily then use the cells generated from the plguin to make a sketch for the welding guide
I was trying to reduce cost. Are two necessary for a casual builder?
This one is recommended on their site. Does it also need two in parallel?
from my limited experience with a malectrics, you’d need to leave it at like 80ms or something high with just two lipos. I was using a single better lipo (turnigy graphene 5ah) on my kweld for a while and it was getting hot after just 10 welds.
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I thought you were gonna borrow my welder. lol
Yes.
Also, your total pack capacity is limited by the capacity of the 2p group. Once it’s empty, the 4p group will still have half its juice left (assuming all cells have the same capacity), but there’s no way for you to use that extra juice without driving the 2p group below its minimum safe voltage, or even negative, effectively destroying it.
This is one of the reasons we place so much emphasis of having matched p-groups. If their capacity and internal resistance aren’t all the same, one could be driven negative and destroyed by the others.
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Got the maletrics for an early Xmas gift from family
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Ya, was planning to stay away from soldering much as possible with a Nese, HOWEVER still think I should know the basics. Like for instance is there an order to how to insert the cells properly, and things of that nature, positive and negative flow chart, bms know hows. I mean I have a basic understanding of what the important concepts are, but it doesn’t mean I’m comfortable going out on my own without a few more lessons. But Ya, I appreciate the suggestions… definitely been chipping away at the thread and already went through the beginner battery thread also.
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I am running my malectrics and one Turnigy graphene at ~25ms just fine.
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I use the same one with my kweld, also a single. Works fine, shit just gets very hot pretty fast. But for casuals totally ok. If you’re not a casual you should use something else anyway, like a car battery on trickle charge f.e. .
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Hey what does this mean, should I Chuck these cells cuz a the rust at the bottom is the electrolytes leaking out? I’m prob gonna use em anyway, I’m building a bomb I mean board for an enemy I mean friend of mine.
Edit: the percimon are just for reference
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If you aren’t concerned about your friend’s safety, and are going to use these cells, I’m confused why you’re asking us if you shouldn’t use them. 
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Where can I buy/ask for dead cells to test my spot welding on? Anyone in Chicago here have some cells to share?