Battery got hot


Hi,
this is how my battery looked after a try with a three blade printed prop and a 1200cm2 wing foil Frontwing. (110l volume board).
The batteries are a 6s3p config. It is a serial connection of the 3p groups. The strips are 2 nickel plated steel strips 0.15mm thick in parallel.
I don’t know how much current was flown (simple 120A ESC).

Any suggestions?
Can I just double up the nickel strips?
Or should I remove the strips that got hot?
And I will definity go back to a Frontwing with higher lift (lower take off speed)

Thanks

Can you describe how the cells are connected internally? Or do you have an image of the battery without the shrink tube?
Assuming the current spreads over 3x 0.3mm steel strip:


180°C over ambient!

Thanks for the answer.
The configuration is even worth.
The current passes over 2 strips of 0.15mm thickness, 10mm wide.


I see
In this case I would solder some 2.5mm² or more wire like shown in red to also carry some current. Then it should be fine
You can just use some single core wire like in house installation. 1.5mm² and 2 each, I also do this in some of my packs

IMG_20250405_211910_737

One of my packs with 1.5mm² single core

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