Uploaded November 2023 | Updated September 2026, 1 week ago

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A 4-cell (4S) sodium ion battery using 33140 cells from evpromax.com

Fitting a battery management system (BMS) from aliexpress.com/item/1005003070168586.html

The chip on the BMS is from BYD datasheet-pdf.com/PDF/BM3451-Datasheet-BYDMicroelectronics-1098180