These are the non-smart active balancers from 100Balance.

Sodium ion cells from:
http://www.evpromax.com

Active balancer links:
https://www.aliexpress.com/item/10050...
https://www.aliexpress.com/item/10050...

Data sheets:
https://semic-boutique.com/wp-content...
https://datasheet.lcsc.com/lcsc/20121...
https://datasheet.lcsc.com/lcsc/18110...
https://datasheet.lcsc.com/lcsc/18111...
https://datasheet.lcsc.com/lcsc/18101...
http://www.icgan.com/uploadfile/pdf/a...