My First Sodium Ion Battery
A 4-cell (4S) sodium ion battery using 33140 cells from http://evpromax.com
Fitting a battery management system (BMS) from https://www.aliexpress.com/item/1005003070168586.html
The chip on the BMS is from BYD https://uelectronics.com/wp-content/uploads/2021/02/BM3451-BYDMicroelectronics.pdf