How many kilowatt-hours does a new energy vehicle consume in one hour of charging?
2 Answers
Charging for one hour consumes 0.22 kilowatt-hours. Generally, a 48V20A battery requires 1.5 kilowatt-hours to fully charge, while a 72V20A battery requires approximately 2.3 kilowatt-hours. Charging time: Generally, the larger the battery capacity, the longer the charging time. For example: A 12V48AH battery indicates a voltage of 12V and a capacity of 48AH. Using an external charger with a 4.8A current, it takes 14 hours to fully charge. Charging method: While the car is running, the battery is replenished by the generator. However, when the battery is severely depleted, it needs timely recharging. The car's own charging capacity is insufficient in such cases, and a portable charger must be used. Charging a car's starting battery requires 20 hours.
I bought an electric car about half a year ago and have been using a slow charger in my home garage every day, which feels quite convenient. The electricity consumption depends entirely on the charger's power. For example, the 7kW slow charger I use consumes about 7 kWh per hour—it's like drinking water slowly to avoid overindulging. The electricity cost at home is around 0.5 yuan per kWh, so charging for an hour only costs a few yuan, much cheaper than refueling a gasoline car. I've also noticed that charging is fastest when the battery is between 20% and 80%, with high efficiency. Once it gets close to full charge, the speed automatically slows down to protect the battery and prevent overheating. On weekends, charging for two or three hours usually gives me enough power for a week, costing just over ten yuan. I think developing a regular charging habit is the most practical—it’s hassle-free and gives peace of mind.
