EV Charging Levels

Level 1 EV Charging

Level 1 charging is the simplest option for charging an EV because it requires no additional installation. Using a standard 120-volt household outlet for power, Level 1 charging delivers a slow charge—about 2 to 4 miles of range per hour plugged in. 

For drivers with a shorter daily commute, plugging into a Level 1 charger each night can ensure sufficient power for daily driving. However, a fully depleted battery pack could take at least 24 hours to replenish on a Level 1 charger. If you regularly take your EV on longer drives, you may want to consider a more powerful recharging option.

EV Charging Levels

Level 2 EV Charging

Level 2 charging provides a much more powerful and faster charge compared to Level 1. Operating at double the voltage — 240V compared to 120V with a Level 1 charger — and at least triple the amperage, a Level 2 charge is much more powerful. A Level 2 EV charger can deliver anywhere from 12 to 30 miles of range per hour.

Level 2 chargers are frequently found at public charging stations and semi-public stations like those provided at workplaces or hotels. These chargers are also available for home installation, however, a 240-volt circuit may need to be installed to accommodate it. In fact, many EVs come with cords that support Level 2 charging for equipped residences. To prepare your home for Level 2 charging, consult a qualified electrician (or your landlord if you rent).

EV Charging Levels

Level 3 EV Charging

Direct Current Fast Charging (DCFC) stations - also known as DC fast chargers or Level 3 chargers - can charge your battery from 10% to 80% in about 35 minutes, similar to the built-in fast charge capability of the Subaru Solterra. Level 3 is an ideal charging option for taking your EV on a long-distance trip. In the event you need to make a pit stop, a Level 3 charger can help you charge up and get back on the road as soon as possible.

That said, charging an electric vehicle on a DCFC may take more time than fueling up a gasoline-powered car. However, in less than an hour, you may be able to recharge your EV up to 80 percent — plenty to power you through another leg of your journey.

Electric Vehicle Charging FAQ

How to charge an electric car at home?

It’s easy to charge an electric vehicle at home. For Level 1 charging, simply plug your vehicle into a standard 120V outlet. You’ll receive about 2-4 miles of range for each hour that your vehicle is plugged in. For faster at-home charging, consider investing in a Level 2 charging station. These should be professionally installed to ensure maximum safety.

How to charge an electric car at a charging station?

Learning how to charge at a public charging station is an important part of owning an electric car–and Subaru helps make the process as easy and stress-free as possible. You can even use your vehicle’s navigation system (or your favorite EV charging mobile app) to locate the nearest charging station. At a public charging station, simply plug the proper cable into your charging port. Then, follow on-screen instructions or app prompts to begin your charging session. Most public charging stations accept payment via credit card, mobile wallet, or through an account with a dedicated charging network.

How to maximize an electric vehicle’s battery life?

Taking care to maximize your EV’s battery life can contribute to your vehicle’s overall performance and longevity. Check out a few of our favorite tips: 

  • Consider optimal charge level: Try to keep your vehicle’s battery charge between 20% and 80% for daily commutes and local driving. If you’re heading out on a longer trip, don’t be afraid to charge to 100% for maximum range.
  • Limit rapid charging:  DCFC charging is speedy and convenient, but Level 2 charging tends to be better for battery health. When you’ve got the time, opt for Level 2—or switch from fast charging to Level 2 once your EV reaches 80%.
  • Avoid extreme temperatures: Prolonged exposure to very high or very low temperatures can affect battery performance. If possible, park your electric vehicle in a garage, or a shaded/covered area to offer added protection against extreme temperatures that may impact battery life. 

How to calculate the cost of charging an electric vehicle?

Many factors affect the cost of charging your EV, including the level of charging, the electricity provider, your location, and even surge charges depending on the time of day. For example, DCFC tends to be the most expensive type of public charging, while electricity providers may incentivize home charging at non-peak hours with lower rates or rebates. That said, EV charging cost is calculated based on kilowatt-hours (kWh) of electricity. You can estimate paying between $0.10 and $0.40 per kWh. Charging a 72.8 kWh battery—like the one on the Solterra—from 0% would cost between $7.28 and $29.12 at those rates.