Optimizing Tesla Charging Practices: Home Charger vs. Supercharger
Tesla owners often find themselves in a dilemma regarding the most efficient way to charge their vehicles. Should they rely on home chargers or head to a Tesla Supercharger? Each option has its own set of advantages and limitations. In this article, we examine the specifics of home charging versus using the Supercharger, taking into account real-world scenarios and personal preferences.
Home Charger: A Personalized Charging Experience
At my previous residence, I utilized a 14-50 plug, which provided a 9.6kW charge rate, adding about 36 miles of range per hour. This setup was perfect for my short commute, allowing me to plug in the vehicle every night and wake up to a fully charged Model 3 within a half-hour. For longer trips, the car's battery might drop to around 10%, necessitating a charge to 90%, which would add approximately 236 miles of range and take roughly 6.5 hours. Sleepers often find this negligible, as they continue their nightly slumber without worrying about the charging duration.
Present Location: 120VAC Outlet and Longer Charging Times
Currently, I charge from a 120VAC outlet, which provides a lesser charge rate of 6 miles of range per hour. After a long trip, it might take more than a day to fully charge the car. Thankfully, long trips for me are infrequent, which simplifies the charging process. Installing a 14-50 outlet would expedite the charging process, but the current setup works well for my needs.
Supercharger: A Convenient but Expensive Option
Tesla did not install a supercharger at my home, making it unnecessary for me. A supercharger, capable of delivering up to 150kW, would be a costly investment. A 150kW supercharger can charge a 75kWh battery from 10% to 60% in about 15 minutes, but the remaining 40% might take up to an hour. This is due to the charging speed decreasing as the battery reaches higher charge levels.
Understanding the Factors Affecting Charging Times
Charging times are influenced by several factors, including the maximum wattage of the charger, the current charge level of the battery, and the type of charger being used. For example, a home charger using a 120V regular plug can take anywhere from 20 to 40 hours to charge a fully depleted 75kWh battery. A level 2 charger, on the other hand, can charge the same battery in 4 to 5 hours.
When using the Supercharger, it is important to note that faster charging times are achieved at lower charge levels. For example, a Model 3 with a 75kWh battery can be charged from 10% to 60% in about 15 minutes using an 11kW level 2 charger. However, the rest of the 40% might take up to an hour.
Conclusion: Personalizing Your Charging Strategy
The choice between a home charger and a Supercharger depends on individual needs and circumstances. For frequent short trips and home-based charging needs, a home charger provides a convenient and cost-effective solution. For occasional long trips or quick recharges, a Supercharger is unmatched in terms of efficiency.
Having a better understanding of your charging requirements can help you make the most of your Tesla's capabilities. Whether you prefer the convenience of overnight charging at home or the speed of a Supercharger, the key is to align your charging strategy with your driving habits.