How Long Does It Take to Charge an Electric Car? What Gets Counted, and What Gets Left Out

Charging an electric car from 10% to 80% takes 18 to 45 minutes on a DC fast charger, and a full charge on a 240-volt home circuit takes 8 to 13 hours. Two spec-sheet numbers set the spread: usable battery capacity and the maximum charge rate the car will accept. The 2025 Hyundai Ioniq 5 sits at the fast end, with 84 kWh on an 800-volt architecture and a Hyundai US figure of 20 minutes from 10% to 80% on a 350 kW charger. The 2026 Chevrolet Equinox EV sits at the slow end, with a similar 85 kWh pack but a 150 kW ceiling, which puts the same window in the low forties. At home both cars accept 11.5 kW, and fueleconomy.gov lists the Equinox EV at 9.5 hours on 240 volts. Refilling the last 20% takes about as long as the first 70%, which is why almost every published charging time stops at 80.

The four numbers that set your charging time

In order: usable battery capacity, the peak DC rate the car accepts, the onboard AC charger rating, and the state-of-charge window the manufacturer chose to time.

Usable capacity is where a published figure first diverges from the headline. Ford's 2025 F-150 Lightning technical specification sheet lists the extended-range truck at 145 kWh gross and 131 kWh usable. That 14 kWh gap is buffer the battery management system will not let you spend. Hyundai quotes the 2025 Ioniq 5 at 84 kWh, and European type-approval listings put roughly 80 kWh of that on the usable side. A spec sheet that gives one unlabeled number is giving you gross.

The peak DC rate belongs to the car, not to the pedestal. A 350 kW station hands an Ioniq 5 about 235 kW at its best moment, and EVKX measured the long-range all-wheel-drive version at 19 minutes 33 seconds for 10% to 80%, averaging 171.8 kW across the session. Kia quotes 18 minutes for the 84 kWh EV6 on the same class of station, while Car and Driver put its real peak nearer 225 kW. A Chevrolet Equinox EV on that identical 350 kW station draws 150 kW and nothing more.

| Vehicle | Usable battery | Peak DC rate | Published 10–80% | Measured average | |---|---|---|---|---| | 2025 Hyundai Ioniq 5 long range | ~80 of 84 kWh | ~235 kW | 20 min (Hyundai, 350 kW CCS) | 171.8 kW, 19 min 33 s (EVKX) | | 2026 Chevrolet Equinox EV | 85 kWh | 150 kW | ~40 min | ~89 kW, 59.5 kWh in 40 min | | 2025 Ford F-150 Lightning ER | 131 of 145 kWh gross | 150 kW | 38 min, 15–80% (Ford) | 140 kW, 92.3 kWh in 39.5 min (EVgo) |

The fourth number is the window itself. Ford times 15% to 80%. Hyundai and Kia time 10% to 80%. No manufacturer publishes 0% to 100%, because the taper at the top would double the figure.

What a 240-volt home circuit actually delivers

Home charging is an electrical question before it is a battery question. National Electrical Code Article 625.42 caps EV supply equipment at 80% of its branch circuit rating, and 210.20(A) requires the breaker and conductors to be sized at 125% of a continuous load. The two rules cross-check: a 48-amp charger needs a 60-amp circuit, a 40-amp charger needs 50 amps, a 32-amp charger needs 40. At the 75°C column of Table 310.16, #6 copper carries 65 amps and covers a 60-amp breaker; #8 carries 50 and does not.

I got this backwards once, around 2021. I wrote up a 48-amp hardwired unit on a 50-amp circuit, reading the 80% rule inside out and derating the breaker instead of the charger. The breaker swap was a cheap part. Pulling #8 back out of the conduit for #6 was not, and the re-pull cost more than the installation labor. I came to this from recall reporting, where the job is to check every claim against the manual that shipped with the appliance, and I had skipped my own step.

Circuit amperage only matters up to the car's onboard AC charger, which converts wall current to DC and sets a hard ceiling. The Equinox EV accepts 11.5 kW on all four trims, so a 60-amp circuit and a 100-amp circuit fill it in the same 9.5 hours. Ford's extended-range Lightning is the exception worth knowing about: 19.2 kW input and 17.6 kW output with the 80-amp Charge Station Pro, which drops a 15% to 100% charge to about 8 hours against 10 to 13 hours on a 48-amp station.

To size your own installation:

1. Look up your car's onboard AC charger rating in kilowatts.
2. Choose charger amperage at or below that ceiling; anything above it buys nothing.
3. Multiply the charger amperage by 1.25 to get the minimum breaker size.
4. Hand that number to a licensed electrician for the service load calculation and the permit.

Step four is not a formality. A 60-amp continuous circuit is a real addition to a panel, and the load calculation is the part I am not qualified to sign.

The 120-volt cord in the trunk delivers about 1.4 kW, since a standard outlet gives 120 volts at 12 amps. The Department of Energy's Alternative Fuels Data Center puts that at roughly 5 miles of range per hour, and the Department of Transportation estimates 40 to 50 hours or more to reach 80% that way.

Why the clock stops at 80 percent

Lithium cells accept high current freely when they are mostly empty and refuse it as they fill. Push amps into a nearly full cell and lithium plates onto the anode as metal instead of intercalating into it, permanently removing capacity. The battery management system prevents that by tapering current, and the taper is steep enough that a spec sheet's peak describes a small slice of the session. Tesla's V4 Superchargers show the shape: an owner testing a Cybertruck at a 325 kW stall recorded a peak of 321 kW across only about 6% of the charge added, with the session still taking 35 minutes to 80%.

The strongest argument against how I have framed this is that the 10-to-80 window is a marketing choice dressed as engineering. That is largely correct, and Hyundai's own numbers prove it. The 20-minute figure requires a CCS adapter on an 800-volt station. The NACS port the 2025 Ioniq 5 ships with tops out at 150 kW, making the same 10% to 80% take about 24 minutes. A driver who arrives at 4% and needs 90% sees neither number.

The taper is still a real physical limit, so a window that ends at 80% describes the machine honestly. The failure is prominence: the native-port figure sits in Hyundai's own documentation and almost nobody reads it.

A 12-volt starter battery is not a small traction pack

The most persistent bad model I meet is imported from gasoline cars: that 20 minutes of driving recharges a battery. The rule is true, and it is true about a completely different object.

A Group 24 starter battery holds 60 to 85 amp-hours at 12 volts, which works out to 0.72 to 1.02 kWh nominal. Lead-acid should not be drawn below about half its charge, so usable energy sits nearer 0.3 to 0.5 kWh. AutoZone's worked example assumes an 80-amp alternator with roughly 50 amps left for the battery after the car's other loads. Twenty minutes at 50 amps and 14 volts is about 0.23 kWh.

Feed that 0.23 kWh into a Group 24 and you have replaced roughly a quarter of it. Feed the same 0.23 kWh into an Ioniq 5's 80 kWh usable pack and you have replaced about 0.3%, which at the car's EPA-implied 4 miles per kWh is nine-tenths of a mile. The traction pack holds about a hundred times the energy of the starter battery, and no alternator touches it in a coffee break.

The two share one behavior, which is why the analogy survives. Lead-acid acceptance also collapses near full: AutoZone notes that 30 to 60 minutes of highway driving buys a surface charge good for a restart, while a genuinely full recharge takes 4 to 8 hours of continuous driving. Same curve shape, different chemistry.

How much cold weather slows charging

For years I quoted one figure, and I have stopped. Idaho National Laboratory researchers Yutaka Motoaki, Wenqi Yi and Shawn Salisbury analyzed roughly 500 DC fast-charge events from a fleet of Nissan Leaf taxis across temperatures from 15°F to 103°F, published in Energy Policy in 2018. Their finding: after the same charging session, a battery at 32°F reached a state of charge 36% lower than the same battery at 77°F, and under the coldest conditions the charging rate ran roughly three times slower.

I repeated that as the winter number until about 2023, when Recurrent analyzed more than 200,000 charging sessions across 4,296 vehicles and found sessions at 0°F running about 9 minutes longer than warm ones on average. Neither result is wrong. The Leafs in the INL study had passively cooled packs and no way to warm themselves before plugging in. The cars in Recurrent's dataset precondition, using the thermal management system to bring the pack to roughly 68°F to 86°F on the way to a charger.

So the variable is preconditioning, not the thermometer. I now tell people to check whether their car preconditions at all, and whether it triggers when you route to a charger in the built-in navigation. It takes 15 to 30 minutes in mild cold and 30 to 60 after a deep cold soak, so it has to start while you are still driving. Skip it and the first 30 to 45 minutes of the session go almost entirely into warming the pack.

Range is a separate failure with a separate number: Recurrent's study of more than 10,000 vehicles found average range dropping 29.7% in freezing conditions among popular models.

Kilowatt-hours the meter counts that the battery never sees

EPA certification data lists two fields side by side: Usable Battery Energy, the DC kilowatt-hours discharged during the test, and the Recharge Energy Event, the AC kilowatt-hours drawn from the wall to refill it. The gap is charging loss, and because EPA builds its kWh/100 miles rating from the wall-side figure, that loss is already inside the sticker. The Equinox EV is rated 31 kWh/100 miles front-wheel drive and 33 all-wheel drive, with nothing to add on top.

The published measurements cluster tightly. Sears measured Level 2 charging at 89.4% efficiency in 2014. Apostolaki-Iosifidou's 2017 work put Level 1 near 80% and Level 2 above 90%, rising toward 93% to 95% at higher current. Trentadue measured DC fast charging at 93% at ambient temperature in 2018. An analysis of EPA certification filings published by Electric Avenue puts most cars between 85% and 90%, averaging 87.5%, with a Lucid Air Touring AWD at 88.2%. Moving 59.5 kWh into a pack on a home circuit costs about 67 kWh at the meter.

Here is what I cannot personally vouch for. I have never run a car through an EPA drive cycle, and I cannot tell you what a specific VIN in your driveway returns. What I can vouch for is what a revenue-grade submeter reads on a dedicated 240-volt circuit over a billing month, because I have read those logs: the wall-side total always exceeds what the car reports adding. The certification database is public, so you can look up the gap for your model rather than take it from me.

Frequently asked questions

How long does it take to charge an electric car at a public station?

On a DC fast charger, 18 to 45 minutes from 10% to 80% for most 2025 and 2026 EVs. Hyundai quotes 20 minutes for the Ioniq 5 on a 350 kW station, and Kia quotes 18 for the EV6. The Chevrolet Equinox EV, capped at 150 kW, needs about 40 minutes.

How long does home charging take?

Eight to 13 hours for a full charge on a 240-volt Level 2 circuit. fueleconomy.gov lists 9.5 hours for the 85 kWh Chevrolet Equinox EV, and Ford lists 10 to 13 hours for the 131 kWh F-150 Lightning on a 48-amp station. A 120-volt outlet delivers about 1.4 kW, roughly 5 miles of range per hour.

How long does a Tesla Supercharger session take?

Fifteen to 30 minutes for 10% to 80% on most Teslas. The Model 3, Model Y, Model S and Model X are 400-volt cars capped at 250 kW. Tesla raised V4 Superchargers to 325 kW across North America in January 2025, but only the 800-volt Cybertruck can use the additional power.

How far can an electric car travel on a full charge?

The median EPA-rated range for model year 2024 EVs was about 283 miles, more than four times the 2011 median. Most 2025 and 2026 models clear 250 miles, and the Chevrolet Equinox EV is rated 319 miles in front-wheel drive and 307 with all-wheel drive. Freezing weather cuts real range by roughly 30%.

Why does EV charging slow after 80%?

The battery management system reduces current as cells approach full, because forcing high current into a nearly charged lithium cell plates metallic lithium onto the anode and permanently removes capacity. That taper is why manufacturers time 10% to 80%: the Ioniq 5 averages 171.8 kW across that window against a peak near 235 kW.

What happens if an EV runs out of charge?

The car stops and needs a flatbed. Electric motors stay geared to the drive wheels even in neutral, so towing with wheels turning back-feeds the drivetrain, and every major manufacturer's manual specifies all four wheels off the ground. Set the car to transport or tow mode before loading. Some roadside programs dispatch a mobile charger instead.