Also don’t forget about thickness of your series connections
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Same diameter as @Ac53n modeled. Small circle 21.8 dia represents the cell, and large circle 23.388 dia represents the nominal spacing by 3DP spacer.
Shown is minimal gap of 1mm to enclosure. BUT…
Afraid I did 
. That’ll be an additional 3-4mm I reckon. I’m hesitant to tuck the series tabs between spread cells in order to minimize height… prefer to keep full foldover nickel x-section. For current carrying.
Unless you intend on using copper as well, this is probably wise.
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Keeping ur cells spaced like this, unless u have some good support filling in the gaps it’ll likely be a lot of stress on the connections.
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Charge your phone man 
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For sure. These wonky configurations would be assembled with custom 3DP cell holders.
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I wonder this product would allow thicker copper nickel plated steel
sandwich with my welder.
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No, also, that math doesn’t math. 6*4 is 24 cells total. 16*2 is 32 cells total. If you want 16s 2p you need 8 of those packs.
Your drawing has two 4s1p packs in parallel with one 16s1p arrangement. If you tried to hook it up, it would create a huge fire or at least do enough to forcefully unsolder something.
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seems familiar
damn glad im asking then. Is it possible to take 6- 4s of these batteries and make a 16s xp?
Or i would need to do 12s 2p?
No, you need 4 to make 16s1p or 8 to make 16s2p
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I get it now, thanks yall. I had a fundamental misunderstanding of this concept. An rc guy on youtube did 6s + 4s + 2s can make = 12s as long as the discharge rate is the same… and i took that to mean i can do that to parallel as well
WoW, its been a minute since i came on here but still is the best place for esk8.
My son is a U.S. Marine stationed in N.C. and he’s always riding his esk8 on base. His 10s4p battery is finally dead which is 6yrs old and must have been charged hundreds of times.
Is it possible he can use 2- 6000mah 5S lipo batteries in the meantime until he comes home and we figure out what he wants to do regarding a battery pack? If yes, can someone point me in the right direction on which batteries will work better on his board and gets decent riding.
There are a bunch of factors there. Is he using a vest-based ESC or a prebuilt? If he is using a prebuilt that is intended for standard lithium-ion, then it will likely over-discharge the lipos and cause issues if you aren’t extremely careful. On a VESC, you can change the lower voltage limit. Most lipos aren’t supposed to go below 3.2 V AFAIK, while standard 18650s or 21700s can go down to 2.5 V in most cases. I wouldn’t recommend trying to use something that doesn’t have a properly adjusted low battery cutoff.
The other issue is balancing. You can hook a BMS up to lipos and if it’s a configurable one you can get things to act very similar to a standard pack, but most of the time the assumption is you’ll remove the lipo from the device and charge it on a balance charger. Unless you already have a configurable BMS like a smart bms from LLT/JBD or something similar you’ll have to figure that part out.
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Its diy, i built our boards. has two flipsky vesc. I also have installed a battery percentage voltage reader on our boardsThis is gonna be a replacement until he comes home on leave and we figure out what to do next. I appreciate the reply.
Which of course doesn’t mean the board gets that low.
Most prebuilts stop at the 3v - 3.2v mark.
You don’t need a smart bms. A “dumb” daly bms works just as good with lipos. The benefit of LLT/JBD is mainly the app.
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Which of course doesn’t mean the board gets that low.
Most prebuilts stop at the 3v - 3.2v mark.
I’m not sure where they stop, but even if it’s 3 V, that could be too low for a Lipo, couldn’t it?
You don’t need a smart bms. A “dumb” daly bms works just as good with lipos. The benefit of LLT/JBD is mainly the app.
Yeah, I guess I didn’t think about the fact that if you’re using it for purely discharge, none of the settings on the BMS side really differ between Lipo and regular lithium-ion. I was thinking you’d need to change some settings, but top balancing at 4.2 works the same either way, I guess.
Edit: Woops, said discharge when I meant charge only.
Yes. That’s what many did before switching to liion cells.
I personally used 2x 6s 12Ah Lipos for years. Ran them without BMS (voltage cutoff via vesc). For charging i just connected the charger without BMS as balancing doesn’t need to happen every single charging cycle.
When i wanted to balance them i used my imax b6 charger but later i got a BMS made as the imax is awfully slow. Since the batteries were in my top mount MTB it was very easy to get it out.
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