3 ms·

- 18 minute 10-80% charge time in ideal conditions (which is very good) Having to wait almost 20 minutes on a 60 minutes commute is far from ideal. That time

- 18 minute 10-80% charge time in ideal conditions (which is very good) Having to wait almost 20 minutes on a 60 minutes commute is far from ideal. That time is very good when one recharges at home or during a long trip or at destination (office / mall / etc) while doing other things. But in the last case it takes away a charging spot until the owner comes back. How is that managed now?

clouddrover 4y ago
> Having to wait almost 20 minutes on a 60 minutes commute is far from ideal. Yes, you'll need have enough battery to get there or charge before you leave. > That time is very good when one recharges at home You won't get that charge time at home unless you decide to put in a 350 kW charger at your house, which will be expensive. An 18 minute charge time on a fast charger can support about three cars per hour. There still need to be better batteries that can sustain higher C-rates to make fuller use of the existing 350 kW chargers and future 400 kW chargers and beyond. For a future, high C-rate battery with 100 kWh usable capacity, 10 to 80% would be 70 kWh. If it could charge 10-80% at a flat 350 kW then that would take 12 minutes. At 400 kW it would take 10.5 minutes. Battery swaps can currently be done in 6 minutes. Swapping in a 100 kWh battery charged to 90% in 6 minutes is equivalent to a flat 0-90% charge curve at 900 kW: https://www.youtube.com/watch?v=VmWL1hZQmD0 https://www.youtube.com/watch?v=VmWL1hZQmD0
saturn_vk 4y ago
> Having to wait almost 20 minutes on a 60 minutes commute is far from ideal. You will either need to only charge once a few days, or if you are lucky, charge overnight at your home or during work. No car will need to be charged every 60 minutes.
kylecordes 4y ago
For commuting, you charge at home with a much slower charger than this. You start each morning at a high charge %, and never stop at any charger at all. The fast charger is for road trips - at the moment, the number and reliability of high-speed charge points is probably a bigger constraint than the relative speed of this model versus others.
ulfw 4y ago
a 60 minute commute (aka at most 70 miles or so, likely much less door-to-door) does not use 70% of the battery. Not even half that.
- pmontra 4y ago
  It will, day after day. In a city where people park on the streets because there are no or not enough personal parking slots (very common in Europe, don't know in the USA,) it's either a (metered?) charger for every public parking slot or a boring 20 minutes stop every few days.

clouddrover 4y ago

> Having to wait almost 20 minutes on a 60 minutes commute is far from ideal. Yes, you'll need have enough battery to get there or charge before you leave. > That time is very good when one recharges at home You won't get that charge time at home unless you decide to put in a 350 kW charger at your house, which will be expensive. An 18 minute charge time on a fast charger can support about three cars per hour. There still need to be better batteries that can sustain higher C-rates to make fuller use of the existing 350 kW chargers and future 400 kW chargers and beyond. For a future, high C-rate battery with 100 kWh usable capacity, 10 to 80% would be 70 kWh. If it could charge 10-80% at a flat 350 kW then that would take 12 minutes. At 400 kW it would take 10.5 minutes. Battery swaps can currently be done in 6 minutes. Swapping in a 100 kWh battery charged to 90% in 6 minutes is equivalent to a flat 0-90% charge curve at 900 kW: https://www.youtube.com/watch?v=VmWL1hZQmD0 https://www.youtube.com/watch?v=VmWL1hZQmD0

saturn_vk 4y ago

> Having to wait almost 20 minutes on a 60 minutes commute is far from ideal. You will either need to only charge once a few days, or if you are lucky, charge overnight at your home or during work. No car will need to be charged every 60 minutes.

kylecordes 4y ago

For commuting, you charge at home with a much slower charger than this. You start each morning at a high charge %, and never stop at any charger at all. The fast charger is for road trips - at the moment, the number and reliability of high-speed charge points is probably a bigger constraint than the relative speed of this model versus others.

ulfw 4y ago

a 60 minute commute (aka at most 70 miles or so, likely much less door-to-door) does not use 70% of the battery. Not even half that.

pmontra 4y ago
It will, day after day. In a city where people park on the streets because there are no or not enough personal parking slots (very common in Europe, don't know in the USA,) it's either a (metered?) charger for every public parking slot or a boring 20 minutes stop every few days.