What is the typical wattage for home charging of electric vehicles?
2 Answers
Directly using a household 220V power source for charging. It depends on the vehicle's battery capacity. Generally, small and medium-sized electric vehicles can hold up to 18 kWh when fully charged. If it takes 6 hours to fully charge, then the charging power would be 18/6=3 kW. The classification of electric vehicle chargers is mainly as follows: 1. Based on current type, they can be divided into DC chargers and AC chargers. 2. Based on power size, they can be divided into high-power chargers and low-power chargers. 3. Based on charging frequency, they can be divided into line-frequency chargers and high-frequency chargers. 4. Additionally, there are negative pulse chargers, three-stage chargers, transformer chargers, and switching power supply chargers, etc.
I just used my electric vehicle to charge at home, opting for the common 7.2 kW power with a 220V dedicated wall box. This power level can fully charge the battery overnight, making it suitable for daily commuting. In fact, the power range varies widely: Level 1 charging uses a standard outlet with around 120V and 1.8 kW power, which is slower but more cost-effective; Level 2 can reach 3.3 to 11.5 kW, charging faster but requiring a circuit upgrade. I recommend deciding based on your car's battery capacity and home circuit conditions, avoiding blindly choosing too high a power to prevent overload risks. It's best to have a professional electrician handle the installation to ensure safety and efficiency. Charging power directly affects time: lower power might take 8 hours to charge 100 km, while 7 kW is much faster.
