4 ms·
> The comparison about the energy transfer speed between gasoline and electricity is misleading. First of all, an electric vehicle is about 3x as effective, so
by rplst8 11y ago
> The comparison about the energy transfer speed between gasoline and electricity is misleading. First of all, an electric vehicle is about 3x as effective, so you would need only a third of the energy transfer speed.
I stated that in my original reply.
> With an electric vehicle, the common case should be overnight recharge, so charge speed does not matter much there.
I know here in the DC metro people have 100 mile per day commutes - and more. That is 1/3 to 1/2 (all in some cases) of the battery capacity of most EVs. A regular 20A wall charger has no chance of replenishing that overnight, and at 85% charging efficiency, a level 2 charger or whatever would struggle to supply 40+ kWh over night as well.
Slow charging EVs may work for some, maybe even most - but definitely not everyone. Especially in the rural United States.
- Kastaka 11y agoThis looks like a Europe vs US comparison problem? In Europe you're unlikely to be travelling vast distances on a regular basis, whereas it's much more common in the US, so the range problems become much more important in the US than they are in Europe.
- Reason077 11y agoIn Europe we also have 230V power as standard, so the standard 32A EV wall chargers provide 7kW - more than enough to charge any EV overnight. Even a standard UK wall socket can provide about 3kW. In Germany they have 3-phase wiring right into homes, so even faster home charging is possible there.