Everything you need to know about EV charging

Section 3

Everything you need to know about EV charging

With batteries comes charging. Charging electric devices is nothing new, the device you’re reading this on has probably been plugged in at some point. But charging an EV is subtly different and in some cases anxiety inducing. But with a few changes in planning and mindset, it could lead to a new and relaxing era of motoring for you. 

For gas vehicle drivers, filling up your tank when the fuel gauge approaches ‘empty’ has become second nature. You know there will always be a petrol station nearby, which fuel to use, how much a tank will set you back, and roughly how long it will last.  
 
Charging an EV, however, requires a mindset shift. Instead of letting your battery drain to ‘zero’ before recharging, most EV drivers top up whenever they park. Whether at home, at work, or on the go, the places you can charge your vehicle are becoming far more diverse. But with different charging levels, connector models, and charging locations to consider, getting your head around these new concepts can seem overwhelming.

EV charging levels explained

The simplest way to think about EV charging is in terms of its charging levels: Level 1, Level 2, and Level 3 charging. As a rule of thumb, the higher the level the more power (expressed in kW) a charger can deliver, which usually equates to faster charging times.

EV guide - level 1 charging

Level 1 charging is the slowest charging method available and refers to plugging your EV directly into a standard household socket. As household sockets only deliver between 1.3 kW - 2.4 kW, a one-hour charge adds around four to six miles of range (six to ten kilometers).  
 
While Level 1 charging may be sufficient for PHEVs with small batteries, many BEV owners find Level 2 charging a better fit for their daily charging needs. Level 1 charging is also very useful in the case of emergencies since you can plug in almost anywhere, just be prepared to wait! 

EV Guide Level 2

Level 2 charging refers to charging your EV using a dedicated AC charging station. Given their price point and good charging speeds, you’ll typically find them installed at homes, workplaces, and public locations like shopping malls. With power outputs between 3.4 kW - 22 kW, and 43 kW in some public locations, you can expect to charge considerably faster than using a regular socket.  
 
Level 2 charging will likely be the most used form of charging for EV drivers. It’s practical, useful, and the best balance for minimizing charging times whilst not stressing your EV’s battery too much. 

EV Guide Level 3

Level 3 charging, also known as DC fast charging, is the fastest type of EV charging available.  
 
What makes it so fast? Unlike Level 1 and 2 charging, it delivers power in the form of direct current (DC). This bypasses the process of having to convert alternating current (AC) from the grid to DC power for the battery, allowing much higher powers to be delivered directly to the battery.  
 
Level 3 chargers are also designed to deliver and withstand much higher power and voltage, with thicker cables and different connectors, all needed to unlock faster charging speeds. 
 

difference between AC & DC charging

Diagram showing the difference between AC & DC charging (Source)

How fast are we talking? While Level 3 chargers come in a range of power capacities (50 kW to 400 kW), you can expect to charge an EV from 5% to 80% in as little as 30 minutes depending on your vehicle. Given the high-voltage supply (and price) required for Level 3 chargers, you won’t find them in residential garages or driveways. You’ll typically find them at quick-stop commercial locations like gas stations and along major highways. 
 
Sometimes, EV charging is also categorized by speed. Level 1 chargers are referred to as ‘slow’ given their sloth-like power outputs. Level 2 chargers are referred to as ‘fast’ between 7-22 kW and ‘rapid’ at 43 kW (these are commonly found on highways). 50 kW Level 3 chargers are also referred to as ‘rapid,’ whereas chargers with higher outputs (from 100-400 kW) are known as ‘ultra-rapid’ or ‘ultra-fast.’ 

EV charging levels

*Charging times mentioned are rough estimates. Actual charging times depend on the battery capacity, state of charge, the vehicle’s max charge rate, charging station power output, as well as a number of situational factors. 

Untangling the many types of EV connectors

To keep things… interesting, EV charging plugs also come in different shapes and sizes. As EV technology is still relatively new and evolving, there isn’t (yet) just one universal connector for EVs. So, just as different phone models have their own unique charging connectors, EV charging connectors vary based on the region, vehicle, and charging station you intend to use.  

While it’s hard to predict if and when that will change, with a new law passing that all new mobile devices in the EU market must include a USB-C charging port by the end of 2024 ⁽¹⁾, here’s to hoping legislation takes the same route for EV connectors soon.  
 
In 2023 North America did take a big step towards a single accepted standard for EVs. At the end of 2022, Tesla opened its charging standard allowing other EV makers to use it on their vehicles, let them use Tesla’s Supercharger network too. Known as NACS ⁽²⁾ (North American Charging Standard) it’s one of the most prevalent connectors shapes in the region. BMW Group, Lucid, Rivian, Ford, General Motors, Kia, Volkswagen Group all say they will adopt the standard.

Let’s take a look at some common connector types to get familiar with.

EV charging connector standards

EV charging connector standards in different regions

Navigating the world of charging locations

From homes to highways, charging stations are becoming more accessible, providing confidence to EV drivers. It’s likely you’ll use a mix of charging options over the years depending on your travel plans. 

Charging at home

If you have access to off-street parking, your home will become your go-to charging location. Universally recognized as the most cost-effective charging method, you can plug into a household socket or use a dedicated Level 2 EV charging point and enjoy the convenience of topping up overnight while you sleep. 

It makes a lot of sense to buy a dedicated home EV charger and have it installed by a professional. In most cases, when you’re buying your EV, the carmaker will be able to help you pick the right one. Many have arrangements and deals with charger makers to offer deals and support to new buyers. These devices help you track your EV’s charge and also charge your EV faster than a conventional wall socket.

Home chargers usually come with an app that lets you control the charging via a smartphone. Some let you schedule charging (so you can take advantage of lower overnight electricity costs), gain insights into energy usage, or access a network of public chargers. Companies like EVBox, Wallbox, Ohme, and Octopus Energy all offer home EV charging solutions like this.

Charging costs vary depending on electricity prices in your area and the charging point you choose. Some government incentives are available for installing an EV charger at your home. As charging stations are connected to your electrical circuit, the energy you use is tracked by your meter and simply added to your electricity bill, so that’s the bill you have to watch to figure out how much your EV is costing you per mile or km.

Pro tip: Many utility companies offer EV-tailored tariffs to help you save on energy costs by charging during off-peak hours. It’s worth checking what’s available in your area and switching tariffs. In some places, charging overnight can be a lot cheaper than during the day. 

Charging on the go

With electricity available virtually everywhere, locations that offer EV charging are growing day by day. Offices, hotels, restaurants, supermarkets, petrol stations, car parks, cinemas, shopping centers, residential streets — you name it, there’s probably a charging station nearby and if not, there are probably plans to install them soon.

Public charging apps, such as TomTom’s own XYZ can help you locate EV charging stations and discover information about their availability, pricing, connector types, and charging speed. Use these apps to find EV chargers close to your destination, and get used to “topping up” your charge when driving extensively.

Most public charging stations provide Level 2 charging, although fast, rapid, and ultra-rapid chargers are becoming more widespread, particularly on interstates and highways. In fact, Zap-Map found that the number of ultra-rapid charge points in the UK grew by almost 80% in 2022 ⁽³⁾

In-vehicle infotainment systems and digital cockpits in EVs are improving quickly too. Many EV makers are taking advantage of fast-growing products like TomTom’s EV Services, to help them provide drivers with an experience that makes driving an EV second nature. In an EV, when you pop in your destination to its navigation system, it’ll suggest optimal charging stops, telling you where and how long you’ll need to charge and the cost in some cases.

Costs for charging on the go vary a lot depending on the charging station you use. As a rule: fast charging usually costs more. You may want to consider using a charging network subscription to get discounts or guaranteed access to stations. Some networks also offer contactless payment methods or accept RFID cards or key fobs, and bill you monthly to save hassle at the charger. 

Tips for longer journeys in an EV 

icon-pit-stop

Map out charging pit stops in advance and check charger availability using apps like TomTom GO Navigation.

icon-distance

Understand your vehicle’s range and what impacts it. Be sure to know how far your EV can drive on a full charge, and keep in mind that extreme heat or cold, blasting the heater and aircon, or driving uphill at high speed, can adversely affect your range. Unlike ICE vehicles, driving through town, where you can use regenerative braking, won’t impact your range as much. Be sure to keep an eye on your car’s live range calculation.  

icon-fast-charging

Use fast charging stations when possible as they supply more range in less time. Many hotels also offer free Level 2 charging for guests so you can top up while you sleep. Be sure to look for those. 

icon-fast-charging-networks

Sign up for charging networks and download all the apps you might need in advance to save time and get easier access to charging stations along the way. Many EV chargers need you to have an account and their accompanying app to work, it’s not a great experience to be fumbling around at a charger downloading an app, setting up an account, and inputting your payment details when all you want to do is put your car on charge and grab a coffee. Do this ahead of time.

icon-backup

Make sure to have a backup plan in case a charging station is out of service or unavailable. Note down alternative charging stations and carry your own Level 1 charging cable to plug into a standard socket in case of total emergencies. 

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References

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