How EV charging time works
At home (AC) the car's onboard charger converts AC to DC, so the speed is the lower of the charger and the onboard limit (usually 11–11.5 kW). Charging time grows in a straight line with the energy you add.
On a fast charger (DC) power goes straight to the battery. The car pulls its peak at low charge and then tapers, so 10→80% is quick but 80→100% can take as long again. That's why road trips stop at 80%.
Bigger charger ≠ faster. A 350 kW station charges a 150 kW car at 150 kW at best. And a 48 A home charger adds nothing for a car limited to 7.2 kW.
Frequently asked questions
How long does it take to charge an electric car?
On a 48 A Level 2 home charger most EVs go from empty to full in 7–12 hours (big trucks take longer). On a DC fast charger, 10% to 80% takes about 18–45 minutes depending on the car.
Why does charging slow down after 80%?
Lithium-ion cells need lower current as they fill to avoid damage and heat, so every EV tapers its DC power. The last 20% can take as long as the first 70%.
Is Level 1 charging enough?
Only if you drive under about 30–40 miles a day. A 120 V outlet adds roughly 4–5 miles of range per hour.