Uploaded July 2024 | Updated September 2026, 2 weeks ago

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I'm building an 8S sodium ion battery to power the lights in my shed.

Sodium ion cells:
aliexpress.com/item/1005006144187633.html

Supercapacitor Spot Welder:
aliexpress.com/item/1005006440251951.html
aliexpress.com/item/1005005762232830.html (without capacitors)