JAC Motors, a Volkswagen-backed Chinese automaker, unveiled the first mass-produced EV with a sodium-ion battery through its new Yiwei brand. Although sodium-ion battery tech has a lower density than lithium-ion, its lower costs, simpler and more abundant supplies and superior cold-weather performance could help accelerate mass EV adoption.
So only charge it to 80%. Why is that a concern?
Or you could just use all of the space for a sodium battery and fully charge it as it won’t need long term storage in that state.