Make your own aluminium Busbars with this form.

Cut a stripe, insert, press, fold, press & fold until desired thickness.

Printed in PLA, 100% infill, 0,2 layer height.

Holes are for weird 4mm studs that came on Oyestore Aliexpress batteries.

This way tere is full contact of the busbar with the battery poles, and with similar material (no potential problems with dissimilar metals)