Electric vehicle (EV) charging: Levels, types, time and more

What is electric vehicle charging?

Electric vehicles are like any other chargeable electronic device. They need electrical energy to function. Electric vehicles (EVs) store energy in the form of charge in their battery packs. The process of EV charging is basically a transfer of energy from an electrical energy source to the battery pack of a vehicle.

The vehicle must be plugged into a compatible outlet to begin the electric car charging process. You can install an EV charging station at your home or find one in public places.

How does EV charging work?

Here are the fundamentals of how electric car charging works. 

• EV charging involves three major components: an electric vehicle, an electrical power outlet, and a connecting cable.

• An EV is plugged into the power station via the connecting cable to recharge vehicle batteries whenever required.

• Some charging stations are more efficient than others depending on the maximum rate of charging they can offer.

• The speed of charging depends on the capacity of an electrical outlet and an EV’s battery pack. 

What are the different EV charging levels?

While electric car chargers are easy to use, you must know about the following levels of EV charging.

Level 1 EV charging

• The rate of EV charging is 120 volts in Level 1.

• Most electric vehicles come with a cord and a control box attached to them for Level 1 charging.

• One can plug in the cord to a three-pin wall socket to begin charging.

• It takes about 8 to 12 hours to charge from 0 to 100 per cent at Level 1, depending on your EV battery capacity.

• You don’t need to necessarily install any additional hardware for this level of charging.

• The only downside of Level 1 charging is the long duration it takes to fully charge an EV.

Level 2 EV charging

• Level 2 charging for EVs is rated usually at 240 volts.

• This level of charging requires additional hardware.

• Some EV manufacturers provide Level 2 home charger installation services.

• A Level 2 charger takes about 6 to 8 hours to recharge EVs from 0 to 100 per cent based on its battery capacity.

• While Level 2 charging is efficient, it adds the cost of the hardware to the charging expense. 

Level 3 EV charging

• Level 3 chargers typically charge at a rate of 480 volts.

• It requires only 1 hour or less to charge an EV from 0 to 80 per cent.

• Level 3 charging systems require expensive hardware, making their installations primarily suitable at public stations only.

How to charge electric cars?

You need to park an EV to charge its battery pack. Hence, you can utilise the time when you are not using your EV to charge it. Based on convenience, there are three major ways to charge electric cars.

Home charging

You can get a private EV charging station set up at home. It is a convenient way of charging an EV, whether for an overnight charge or a quick top-up in the afternoon. Just make sure you buy a charger based on the maximum charging rate of your EV’s battery and get it installed via a professional.

Also, read: Charging an electric car at home: Time, cost, set up and more

Public charging

The number of public charging stations is gradually increasing in India. You might find EV charging stations near parks, supermarkets, cinemas, etc., depending on the city you live in.

You don’t have to necessarily use public stations for a 100 per cent charge. A quick top-up will keep your car going. This way, you won’t have to worry about losing the battery charge while driving around the city. 

Below are some key factors to remember when charging EVs at public stations.

• An electric car can approximately gain between 30 to 50 km of range in one hour while using a 7 kW power outlet.

• The cost of charging at public stations may differ depending on the state and city you reside in.

Workplace charging

Several organisations in India offer charging stations for employees at work. So, you can recharge your electric car when it remains parked at your work location. Some companies provide this service for free as a perk for their employees. 

In case your organisation offers an EV charging facility, it will be as simple as charging your vehicle at home. Typically, workplace chargers offer charging sockets where you can plug in your EV charging cable. Some organisations require employees to register via their app and scan a QR code to authorise the charging process.

Electric vehicle charging types based on speed

If you consider the speed, there are three main types of EV charging options. 

Slow charging 

Slow chargers generally offer a charging rate between 2 kW to 3 kW. It makes them suitable for overnight charging at home. You can connect your electric vehicle to the outlet and charge from 0 to 100 per cent within 8 to 12 hours. 

While slow charging is possible via any regular three-pin socket at home, it may increase the required electric car charging time. Thus, it is better to get a dedicated EV charging station installed at home. 

Fast charging 

Fast chargers usually provide a charging rate of 7 kW and charge from 0 to 100 per cent in 3 to 6 hours. This type of charger is usually installed at home as well as at public charging stations.

A typical fast charger requires a Type-2 kind of socket, which includes 7 pins. You can carry your own charging cable while driving to use public fast-charging stations whenever possible.

Rapid charging

Rapid chargers offer the fastest possible charging speed with a rate of 50 kW. Rapid charging requires only about 30 to 60 minutes to charge an EV battery from 0 to 80 per cent. However, you might have to check for compatible charging cables based on your EV’s make, model and manufacturer.

How much does it cost to charge an electric car?

The cost of charging an electric car may vary depending on several parameters. You can calculate the cost of EV charging by looking into the factors mentioned below.

• Battery capacity: Batteries with higher capacities will take longer to fully charge than low-capacity batteries. Thus, the higher the battery capacity, the more you will pay for every charge.

• Charging duration: The cost of charging also depends on whether you need a quick top-up or 0-100 per cent full charge.

• Charging at home: At home, your power supply tariff will play a major role in EV charging costs. The electricity cost per unit varies depending on the state and city you live in.

• Charging at public stations: The cost of charging an EV at public stations is also different in different states and cities. 

How long does it take to fully charge an electric car?

Here are the approximate time durations to fully charge an electric car based on the type of charger you use. 

Frequently asked questions

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