- Home charging: 6-12 hours at speeds of 3.6 kWh or 7 kWh
- Public slow charging: 2-6 hours at speeds of 7 kWh up to 22 kWh
- Public Fast charging: 1-4 hours
- Tesla Supercharger: <1 hour
What affects the charging time of an electric car?
There are multiple factors that affect how long it takes to charge an electric car. Here are the five most important ones:- Size of battery: The more energy your vehicle's battery can store, the longer it will take to charge. The bigger a car’s battery capacity (measured in kWh), the longer it takes for that person—or an electric company--to recharge their car.
- State of battery (empty vs. full): The fastest way to charge your car is from low levels of power. If you are charging the battery when it's on empty, then this will take longer than if you were topping off at 50%.
- The quickest and most efficient way for a vehicle with an electric engine to recharge its cells is by starting out in top condition instead of being nearly depleted.
- Max charging rate of vehicle: The maximum charge rate a vehicle battery can accept is the same whether you are charging it at home, from a public charging station, using Tesla's supercharger system, or with any other fast chargers.
- Max charging rate of charging point: Because not all charging points are capable of the same charge rates, the time to charge will depend on the max available for that specific charging point. If you plug your Tesla into a slow charger, it's going to charge slowly.
- Environmental factors: Batteries of all kinds don't perform as well in the cold. Your car battery will not do as well when the thermometer drops. In fact, some cars suffer from a 50% range reduction. This means more frequent charging.
Where can I charge my EV?
There are four main options for charging an electric car. EV charging can happen at home, at public slow and fast charging points, and at Tesla's own 150 kW supercharging stations.Charging at home
A typical home charger has a power rating of either 3.6 kW or 7 kW. This is how much power your home charging point delivers to the battery every hour. You can work out your time to a full charge by dividing your battery size by the charging speed of your home charger. For example, a new Nissan Leaf has a 40 kWh battery (or 62 kWh if you want). At 3.6 kWh charging from home chargers, this battery would require a little over 11 hours to charge from empty to full. A faster home charger brings that time down to less than six hours.Public charging points (approx. 20-to-80-mile range per hour)
Public charging points for cars are popping up at motorway service stations, supermarket car parks, and big multi-level car parks as well. Being close to a charge point reduces "range anxiety" a bit for most drivers. How fast are they, though? Public pod point speeds vary, but the most common speeds are 7 kWh and 22 kWh. To use our Nissan Leaf example, we already know at 7 kWh, the car charges from empty to full in under 6 hours. In theory, the faster speed of 22 kWh using a 3 phase ev charging cable, meaning this could charge the car in less than 2 hours. However, there's a problem. The Leaf's main charger is only rated at 6.6 kWh. Even with a rapid charger, the charging speed is limited to this rate. Thankfully, Nissan (and a lot of other manufacturers) has a second, high-speed EV power supply connector. This allows for faster charging, up to 50 kWh.Fast charging points
You can charge your car even faster with a public rapid charger. These deliver an electricity supply up to 50 kWh. One of these would charge our Nissan Leaf in an hour or less. Once again, we need to point out the different battery sizes and rapid charging options available. Every car is different and EV owners should check their specs to discover their maximum battery charge rate.Tesla Superchargers (Full charge in around 40 minutes)
Tesla owners can charge their electric cars even faster thanks to Tesla's 150kW charger. These support a full charge in around 40 minutes, making them the fastest way to power up your electric car and get back on the road.How do I charge at public electric car charging points?
There are just a few things to remember when using a public electric car charging point. It's not quite as simple as rolling up, plugging in, and paying for the juice. Here's what you need to know:- Your car's connection point must be compatible with the public charger. In some cases, you may need to purchase a special adapter to use the charger. Most modern public chargers have a standard Type 2 plug for slow charging and a CHAdeMO connector for rapid charging.
- The fees can vary from one charging point to another and across different power networks. Some network providers charge extra fees, such as a one-off registration fee, connection fees, and a monthly charge.