Sep 8,2025
As times have changed, the trend of electric vehicles (EVs) is in town. Now, everybody is running towards it. In simple words, it is in high demand these days. However, EVs are better and more convenient than traditional cars. However, it's not about just buying an electric vehicle. One also has to think about how to charge it. One of the most pivotal things about electric vehicles is their charging speed and the built-in charger of your car.
If we compare a 3.3 kw EV charger to a 6.6 kW EV charger, the key difference is their charging speed, convenience, and long-term usage patterns. In this blog, we will highlight everything that is necessary for you to know. That includes charging times. Infrastructure needs, better health effects, and which charger might be appropriate for your lifestyle are the best. However, a kW EV charger to 6.6 kW charges the electric vehicles, which is twice as efficient as electrical charging.
The first and most pivotal difference between a 3.3 kW and a 6.6 kW charger is how rapidly they can recharge their vehicles’ batteries. A charger’s power rating analyzes how much energy it can deliver every hour. A 3.3 kW charger normally adds around 11 miles; it takes numerous hours. While it sounds like forever. But in reality, you can get this job done at night, when the car is not in use and is standing idle.
On the other hand, we have this 6.6 kW charger that multiplies the charging speed, adding approximately 22 miles of range each hour. If we take the example of a 40-kWh battery, which has the ability to be charged within 6 hours, making it way easier than if you need to recharge your car instantly between trips at different points.
For drivers who stay busy at work or have many trips per day, the faster 6.6 kW option provides adaptability and inner satisfaction.
It's pivotal to understand that charging speed does not rely only on the onboard charger of your car but also on the power supply you are using.
For instance, if you connect it into a standard 120-volt outlet (Level 1 charging), both 3.3 kW and 6.6 kW chargers deliver roughly the same output, which is nearly 1.4 kW. In this scenario, a complete charge may take 10-12 hours or more than that, regardless of your charger’s capacity.
If you want to take complete advantage of a 6.6 kW charger, you will need to get to Level 2, which is a 240-volt outlet. Or, you will need to go to the compatible home charging station. Using a more robust power source, the difference in charging speed becomes very clear. With the help of a powerful enough setup, a 6.6 kW charger has the ability to charge your vehicle twice as fast as a 3.3 kW charger.
Let’s give you an example of a bucket with a hose here. Suppose you take an empty bucket and want to fill it with water. Then you take a hose, a bigger and high-pressure hose. You put it into the bucket and start filling it. This way, the hose will fill the bucket much faster. The 6.6 kW charger is like a big-sized hose; it can send electricity at a much higher rate, reducing the time it takes to get a full charge by almost half.
Therefore, before buying a faster vehicle charger, it is necessary to first check your home’s electrical capacity and whether you possess or are ready to install a 240-volt supply.
One more factor to keep in mind is the effect of charging speed on the battery’s condition. Many people have this misunderstanding that slower charging won’t affect the battery. While this isn’t always the case.
Let’s suppose we are talking about a person who is exhausted from doing physical activities. Staying at 100% charged is like an example of a person who is awake and attentive for a long time. However, it's stressful.
In simple words, a 3.3 kW charger’s speed is slow. For example, if you charge your vehicle with a 3.3 kW charger all night, it will take the whole night to fully charge. However, the worst part is that this charge stays with you only for a few hours. So that, when you need the car, you won’t have it working. Plus, if the battery gets even a little heated up, it will get damaged very easily. This is another disadvantage of a 3.3 kW charger.
If we compare the 6.6 kW charger with the 3.3 kW charger, 6.6 wins. This enables you to connect it to your vehicle and charge the battery in half the time before using the car. Since the battery won’t be charged fully, it will take less stress and will become less overheated. This is very beneficial for your battery.
Without any doubt, cost plays a pivotal role in deciding which vehicle charger you should purchase. Cars with larger built-in chargers are often expensive. However, installing a Level 2 home charging station can be costly.
A 3.3 kW vehicle charger is more affordable and enough for a person’s needs if you have time to charge it overnight. Those drivers who use a 3.3 kw EV charger are the ones who need the electric cars only sometimes. Therefore, this EV charger is best for them.
If we talk about the 6.6 kW charger, it is more costly, but worth it. Why? Because they charge up super-fast and can stay with you for a long time when you need your car. In short, if you are a person who is travelling almost all the time, a 6.6 kW charger is the best option for you.
A 3.3 kW charger is appropriate for:
In short, a 3.3 kW EV charger fulfils your need by taking a little longer to charge your car.
A 6.6 kW EV charger is best suited for:
If you fall into any of these categories, the excessive initial cost will be worth it.
When deciding which charger is the right choice for you, it all depends on your needs and some other factors.
If you don’t want your car to be rapidly charged and you have enough time, and want to save money, consider purchasing a 3.3 kW charger. So that your battery will be charging continuously while you sleep peacefully at night.
Likewise, if you are a busy household or frequent driver, buying a 6.6 kW EV charger is the right choice for you. Why? Because it will charge your EV battery as fast as magic. So that you will be able to get all your vehicle tasks done conveniently.
As EV technology continues to advance, charging speeds will only get better with time. But for now, numerous cars still have either 3.3 kW or 6.6 kW onboard chargers.
Nonetheless, the right choice relies on how you want your vehicle to be. If you have plenty of time to charge your car and need it occasionally, a 3.3 kW charger is optimal for you. If you are a busy individual or a frequent driver, a 6.6 kW charger is made for you.
