When before autonomy, it counts to load fast. There

Let’s start from the basics: reading about an electric car, what do we look at, after perhaps being impressed by the design or the price? For the vast majority of people, the answer will be: autonomy. Perhaps the question we should ask ourselves, though: is how long does it actually take us to recharge so we can extend our journey? What powers are at stake?

Those who have been able to investigate the problem know that electric car manufacturers often indicate the charging times to bring the battery from 5 or 10% to 80%, this is because the curve that expresses the power (and thus the speed) when charging the battery . batteries tend to drop the closer you get to “full”: to simplify the concept as much as possible, the more the car battery is discharged, the faster the charging will be in the early stages of the process, while recharging is usually slower precisely in the transition from 80 to 100% of the charging level. Basically, when the battery is more discharged, the charging power is greater and several kilometers can be charged at the same time.

The graph developed by Ionity shows several examples of “charging curves”, ie. the charging power provided by a column when the battery charge level varies. The highest revolutions occur below the 40-50% charge level. The peak is reached when the optimum battery temperature is reached.

Charging speed is naturally related to the power supported by the column – for AC charging also by the charger integrated in the car – and for high power DC columns, where the charger is integrated in the station itself, The power is modulated in real time during the process based on battery charge (voltage and supported currents). Currently, the CCS 2.0 standard for DC charging provides a maximum charging power of 350 kW, but few cars come close to this peak. But being able to access high forces is a basic feature of making short stops, where you can quickly add the miles of autonomy needed to reach your destination (and not necessarily fill up with a full tank, which takes longer).

Charging network in Italy: still few stations with power over 150 kW

Before you see the ranking of cars by charging current, a small parenthesis about the charging network. In Italy, around 28,000 charging stations are currently available (data updated in March this year), of which 10% are not yet operational. Just over 400 of the available columns can offer a charging power of over 150kW.

kW or KWh?

There is still some confusion when it comes to units of measurement for battery capacity, charging and engine power. KW expresses the power (of an engine or a charging column), while kWh energy, in the case of the battery in an electric car, is the amount of energy that it can store (the size of the tank).

There are 560 columns in the power range between 50 and 150 kW, a thousand are in the range between 43 and 50 kW and the vast majority, over 21,000, are in the range between 7 and 43 kW. There are only about 150 on our highways, of which 110 are fast or ultra-fast, or 1.5 columns per. 100 km motorway. The numbers are constantly growing and the distribution tends to be very uneven, but the 741.3 million euros set aside in the PNRR for the development of the Italian charging network give hope for further acceleration.

Charging the battery is not like refueling. Once this is understood, the fear disappears

The best electric cars for battery charging

Kia EV6: 240 kW

The Kia EV6, the new crossover in the Korean cabinet, has one of the most modern architectures, an 800-volt platform that is theoretically capable of achieving an impressive 350 kW charging power. Kia EV6 is available in single and twin engine configurations, has a package starting from 58 kWh with another variant of 77.4 kWh, with power from 288 hp, has a minimum WLTP range of 484 km and a maximum charging power of 240 kW, with a time to go from 10% to 80% charging level in 18 minutes. List price from 49,950 euros.

2. Tesla Model S, Model X, Model Y and Model 3 Long range: 250 kW

The second step on the podium is shared by four Teslas, demonstrating the American House’s willingness not to penalize its cheaper cars in terms of recharging the batteries. All new models in the “S3XY” series offer recharging up to 250 kW, the maximum speed currently supported by Tesla’s Supercharger network with v3 booths. Musk hinted at the possibility of bringing the supercharger’s power up to 300 kW, but it is not clear whether and which models could touch such forces. As for the Model 3 sedan, only the twin-engine long-range version supports charging up to 250 kW, while the standard version with rear-wheel drive stops at 170 kW thanks to the reduced battery capacity. The Model 3 twin engine starts today from 62,000 euros on the list, Model Y from 64,000 euros, while for the new versions of Model S and Model X the updated prices for Italy are not available at the moment as the new one can only be pre-ordered and the configurations will only be communicated close to delivery. Prices in the US currently start at $ 94,000 plus tax for the Model S Dual Motor and $ 109,000 plus tax for the Model X Dual Motor.

1. Audi e-tron GT and Porche Taycan: 270 kW

The Audi e-tron GT and Porsche Taycan are in first place, based on the same 800-volt J1 platform, which supports a maximum charging power of 270 kW.

The German gran turismo – which we recently tested at Mugello in its RS version – is available in the version with a 93.4 kWh battery pack, with a power from 530 hp, has a minimum WLPT range of 380 km and a power of 270 kW recharge, for recharge 80% in less than 23 minutes or 100 km in 5 minutes. Indicative list price from 110,000 euros.

Available in different 2- and 4-wheel drive models and with different body, Porsche Taycan it has 79.2 kWh or 93.4 kWh battery packs, with power starting from 408 hp, has a minimum WLTP range of 370 km and a charging capacity of 270 kW. Indicative list price from around 90,000 euros.

The fastest charge of electricity (peak power)

Position Year Car Power
1 2022 Audi e-tron GT 270 kW
1 2022 Porsche Taycan 270 kW
2 2022 Tesla Model S 250 kW
2 2022 Tesla Model X 250 kW
2 2022 Tesla Model 3 250 kW
2 2022 Tesla Model Y 250 kW
3 2022 Kia EV6 240 kW
4 2022 Hyundai Ioniq 5 235 kW
5 2022 BMW iX 200 kW
5 2022 Mercedes EQ EQS 200 kW
6 2022 BMW i4 195 kW
7 2023 Mercedes EQ EQE 170 kW
8 2022 Polestar 2 155 kW
8 2022 Volvo C40 Recharging 155 kW
9 2022 Volvo XC40 Recharging 155 kW
10 2022 Audi e-tron 150 kW
10 2022 Ford Mustang Mach-E 150 kW
10 2023 Toyota bZ4x 150 kW

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