Hi!
If you bought recently nickel from nkon, make sure to test it. They sold nickel plated steel which is not great to use.
https://forum./t/psa-do-not-buy-nickel-from-nkon-at-the-moment/6740?u=andy87
I would also avoid this situation
Especially if you fold the packs together than.
The balance wire can rub off and short the pack.
As min put fishpaper under the balance wires.
I know from the faulty nickel from nkon and therefore buy my nickel from AliExpress. I test it by scratching it and leaving it in saltwater overnight.
Also thanks for pointing out the design flaws. In the last pack I built I spotwelded extra balance tabs for the balance wires, put fishpaper below them and bent them to the side of the cell. Also it doesn’t heat the cell that way (no soldering on main nickel strips).
Doesn’t look like you use fish paper between the parallel groups? You should really do that to prevent the Parallel packs from shorting each other if they rub against each other.
Maybe you want to post some actual work over there:
https://forum./
Lot of us moved over, so there might be the one or other interested in your service as well.
A lot of concerns and recommendations have already been discussed here. I’ve also read a lot of topics about batterys in the forums. @pjotr47 Could you please add your danger thoughts so I can improve my work?
Hi im interested in a battery, im actually located in eastish Germany too! How much would a smaller battery that could go about 8 miles with dual hub motors? Im trying to build a skateboard for zooming around town, but not overly heavy.
a 10s2p should be plenty if your goal is 8 miles. With my 10s2p pack i get about 16-22 km with moderat to fast speeds. If i go slowly i can achieve 27km easily (95KG rider) That way you’ll have some spare range if needed and you don’t have to worry about cutting it short. @YoddlingTaco
I would maybe go with a 7s2p 30q or something similar to keep the weight down. A 1p pack with just 18650 cells isn’t gonna cut it currentwise.
But if you want the lightest pack and don’t need the range I can build a 10s1p Samsung 40t pack (21700cells)
Right now I have Meepo Mini 2 which has more range then I need. I’m not that well versed on my battery-speak as I am new to the electric skateboard scene, but would the packs you build only work with a motor that takes a specific voltage? I’m still trying to find a source for a motor/esc/other stuff.