i think bmw was working on something like that.
lime
joined 2 years ago
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.
idk about that, the regularly cited reason Na-ion batteries are mainly being looked at for grid storage rather than vehicle applications is their bad Wh/l and W/kg numbers compared to Li-ion. the table in the Na-ion article seems to use "1000W/kg" without a source, and it shows lithium as being about a third of that even though the Li-ion article quotes figures up to 10kW/kg.
seems the editors of the two articles aren't cross-checking eachother.
according to their product page, the charge rate for a single cell seems to max out at 3C, which could be a pretty big obstacle to grid-scale deployment. unless that's a problem that can be fixed with a different arrangement; i'm not too up on how to build batteries.
sstv map
no but i'm not talking about me. i'm talking about tyler, 27, who just gets a new phone and doesn't care about whatever accounts the old one had, so he throws it away and now the parts are available at a repair shop.
what if the phone is broken and has been disassembled?
sure but what if you buy one for parts?
i'm perfectly fine with buying third-party components.
...but only if you buy the parts new.
the same apple that locks individual parts of devices to user accounts so that they can't be used for repair?
one is energy density, the other is power density.