4 ms·
CCS has a 500 amp cap in the spec, so here is a limit to how fast 400V batteries can be charged on public infrastructure. Going to 800V removes that limitation
by theluketaylor 5y ago
CCS has a 500 amp cap in the spec, so here is a limit to how fast 400V batteries can be charged on public infrastructure. Going to 800V removes that limitation as well. Tesla doesn’t care since they control everything and can ramp up the amps, but all other cars that want to charge more than 200 kW need to have higher voltage batteries.
- speedgoose 5y agoTrue, but all these cars are quite far from having a flat 200kW charging curve anyway.
- theluketaylor 5y agoNo charging curve is flat (apart from e-tron, but I don’t see anyone devoting that much unusable buffer ever again), but taycan can sustain more than 200 kW past 30% state of charge. Ionic 5’s curve is weird, but it can sustain more than 200 kW between 30 and 50% state of charge. We haven’t seen a lucid air’s curve yet, but inside EVs reports it can crack 300 kW and have hinted it’s extremely good and will be publishing in the next couple days. As people switch to EVs range anxiety is a big thing, but once I became an owner I realized charge curve mattered way more than static range. I’d rather dump charge in at low state of charge and make a couple more short stops than sit around waiting to get to 80+% as the curve tapers.
- manmal 5y agoThe curve doesn’t need to be flat to benefit from peak flow above 200kW. Cars in later generations will likely charge above 200kW in the 20-80% SOC range. Higher voltage also reduces power losses. Not sure what you are arguing against here, to be honest - are you defending Tesla‘s system? Slow charging is one of the main arguments against EVs, it’s great that this is finally being fixed.