What is the difference between Tesla fast charging and slow charging?

1 Answers
MaxFitz
07/30/25 9:49am
Tesla fast charging and slow charging differences: 1. Fast charging is high-power DC charging: The charging power can generally reach above 40kW, using a DC charging pile charging interface (5 holes), converting the grid's AC power into DC power and delivering it to the electric vehicle's fast charging port, with electricity directly entering the battery for charging. 2. Slow charging is low-power AC charging: The charging power is generally 3kW or 7kW, using an AC charging pile charging interface (7 holes), inputting the grid's AC power into the electric vehicle's slow charging port, where the vehicle's onboard charger converts AC power to DC power before inputting it into the battery to complete charging. Although fast charging can save a lot of time compared to slow charging, fast charging has a certain impact on battery lifespan. If not particularly necessary, it is recommended to use it as little as possible. Even if fast charging is needed, frequent use should be avoided.
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