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7kw ev charger how long to charge

7kw ev charger how long to charge? A 7kw ev charger can provide up to 7kWh of charging capacity per hour. If the battery capacity of an ev is 60kWh, it will take 8 hours to fully charge it with a 7kW ev charger, and 4 to 6 hours to replenish the capacity, which varies depending on the battery size and current.

In addition, the time required to charge with a 7kw ev charger varies depending on a variety of factors, including the battery capacity of the ev, the current state of charge, and the charging efficiency. Here are some analyses of how long it takes to charge with a 7kw ev charger:

1. Charging time range

Generally speaking, a 7kw ev charger will take 4 to 6 hours to complete charging an ev. However, this time is not absolute, and it will also be affected by the battery capacity and the current state of charge. For example, if the battery of an ev is completely exhausted, then the charging time may be longer than the charging time in a partially discharged state. Similarly, the larger the battery capacity of an ev, the longer it may take to charge.

2. Calculation of specific charging time

To accurately calculate the time required for a 7kw ev charger to charge an ev, you can refer to the following formula:

Charging time (hours) = battery capacity (kWh) / charging power (kW) × charging efficiency

Among them, the charging efficiency is usually between 85%-90%, which means that the battery can only absorb 85%-90% of its rated capacity. Therefore, when calculating the charging time, the impact of charging efficiency needs to be considered.

For example, if an ev with a battery capacity of 60kWh uses a 7kW charger (close to 7kW) and the charging efficiency is 90%, then the time to fully charge from 0% is approximately:

Charging time = 60kWh / 7kW × 1 / 0.9 ≈ 9.4 hours (rounded to one decimal place)

3. Classification of charging speed

7kw ev chargers are also called slow charging because their charging speed is relatively slow, and they can charge about 7 kWh of electricity per hour. Compared with fast charging, slow charging has a lower charging cost and less impact on the battery, which is conducive to extending battery life. Therefore, slow charging is suitable for daily charging at fixed locations such as home or workplace.

4. Recommendations

Before charging, it is recommended to consult the owner's manual or consult a professional to understand the specific charging requirements and precautions of electric vehicles.

In order to extend battery life and reduce charging time, it is recommended to avoid charging after the battery is completely exhausted, and choose the appropriate charging power and charging method when possible.

If you want to know more about "7kw ev charger how long to charge", you can consult us online or email (sales@hjlcharger.com).