You can also buy cells directly from china. I found this store, which seems somewhat reliable https://hakadibattery.com/collections/sodium-ion-battery-cells-3v

You can also buy cells directly from china. I found this store, which seems somewhat reliable https://hakadibattery.com/collections/sodium-ion-battery-cells-3v https://hakadibattery.com/collections/sodium-ion-battery-cel...