from other comments it seems the energy density of batteries currently on the market is about 2/3rds that of lithium cells.
there’s also the asymmetry to worry about: with a max discharge rate of 8C but a charge rate of 3C there could potentially be limits on regen braking. if i’m understanding it correctly, sodium cells degrade quickly at higher charge rates.
from other comments it seems the energy density of batteries currently on the market is about 2/3rds that of lithium cells.
there’s also the asymmetry to worry about: with a max discharge rate of 8C but a charge rate of 3C there could potentially be limits on regen braking. if i’m understanding it correctly, sodium cells degrade quickly at higher charge rates.
Just put condensers/a small lithium break battery in.
i think bmw was working on something like that.