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By | 18 Apr 2022

What is a DC fast charger? – Know Everything about it

What are DC Fast Chargers, exactly? Primarily, DC stands to mean Direct Current. Now, we’ve previously done a comprehensive film about DC so check it out if you want to have more insight. We're discussing DC power charging station today, but we're taking the opposite approach. We'll take a more practical approach and discuss the chargers themselves and how they're used.

Electric vehicles emit no pollution, do not require gasoline, and have become considerably more affordable to the common individual. Owners of these vehicles, on the other hand, have a unique issue. How do they charge their vehicles? They must use EV chargers to recharge fully electric autos.

What Is the Distinction Between AC and DC?

There are two types of "fuels" that may be utilized in electric vehicles. Alternating current (AC) and direct current (DC) power are the two types. The grid's power output is always alternating current (AC). However, batteries, such as the one in your EV, can only store DC electricity. As a result, most electrical products include a converter incorporated into the plug. You may not know it, but when you charge a gadget like your smartphone, the socket is converting AC electricity to DC.

Electric car recharge through alternating current

In the case of power cars, the conversion is incorporated into the vehicle. It's dubbed an "onboard charger," but it's a converter. It transforms electricity from alternating current to direct current and then feeds it into the car's battery. This is the most prevalent charging technique for electric vehicles today, and the majority of chargers use alternating current (AC).

Electric car recharge through direct current

As we've seen, grid electricity is always alternating current (AC). The place in which the AC electricity is transformed; inside or outside the automobile, is the distinction between AC charging and DC charging. A DC charger, as opposed to an AC charger, contains the converter within the charger itself.

What is a combined charging system?

CCS stands for Combined Charging System and would be the European standard plug and socket style for attaching electric or plug-in hybrid automobiles to a DC quick charger.CCS charging is only available for DC quick charging of 50kW or above. The plug's two bigger, lower pins enable the Direct Current connection, which drives more power into your battery in even less time.


Renewable radiation offers several advantages as a simple, dependable, good for the environment, and productive type of power. However, one disadvantage of solar power is that you may occasionally find yourself without enough sunlight to charge your solar batteries. In certain cases, you may require a different method of recharging your battery.

In these rare instances when solar energy is insufficient, AC to Dc conversion or DC to DC charging stations are excellent alternatives. DC to DC chargers uses just the energy through one battery to power another. Because they function with two batteries, DC to DC converters are often known as "battery to battery" or "B2B chargers."

DC to DC charger is widely used to charge batteries with the voltage of your vehicle's alternator. Every car on the road nowadays has a battery to operate its components whenever the engine is turned off. When the engine starts, a mechanism known as an Alternator is utilized to charge the battery.


1. With a DC-to-DC converter, you may recharge your off-grid battery with the same engine that your car uses to charge its running battery. While driving, your car's generator creates DC energy to power the electrical grid and charge the starting battery.

2. You can regulate the current with a DC-to-DC charger so that you can recharge an off-grid battery from your car's battery. It will, however, control current to increase the life of existing car components and battery life.

3. DC to DC conversion can be so fast that you can eliminate the need for solar panels. However, if you're using a lot of power in your automobile to operate your A/C, car music, headlights, and so on, the reliability of DC-to-DC charging will be affected. The more power you use to propel the vehicle and its accessories, the less excess DC energy you would have to charge your battery.

4. Getting in touch with nature and enjoying some quiet time is a big part of the allure of camping, traveling in an RV, or living off-grid. The last thing you want to hear is the buzz of your gas engine.

What exactly does direct current rapid charging entail?

Direct current fast charging, often known as DC fast charging, is the quickest method for charging electric automobiles. There are three EV charging levels:

Level 1 charging runs at 120V AC and provides between 1.2 and 1.8 kW. This is the amount offered by a regular household plug, and it may provide 40–50 miles of range overnight.

Level 2 charging runs at 240V AC and provides between 3.6 and 22 kW. This category comprises charging stations that are routinely placed in homes, businesses, and public areas and can give up to 25 miles of range per hour of charging.

Level 3 (or DCFC for our needs) runs at 400 to 1000 volts ac power, producing 50kW and higher. DCFC, which is normally exclusively available in public places, can typically charge a car to 80 percent in 20-30 minutes.

What are the benefits of DC rapid charging?

While commuting and short-distance journeys account for the majority of the driving, many EV drivers will travel great distances at some time. EV batteries ranges have constantly increased and will continue to increase in the future years, with several models reaching ranges of more than 200 miles. Aside from extended vehicle ranges, DC fast-charging stations along roads allow EV drivers to make brief stops and refill conveniently, swiftly, and affordably. 

While home charging accounts for around 80% of EV charging, not every EV driver has simple access to charging stations. To suit the demands of multi-unit housing (MUD) tenants, as well as ride-sharing cars and public transport fleets, urban fast-charging stations may grow increasingly common.

DC Charging Rates and Your Vehicle

So, let's take a moment to reflect on the chargers and the different networks that have been discussed so far. A charger, on the other hand, will only provide what the automobile is prepared to accept! If you were an early adopter of electric vehicles, you may have a vehicle with a maximum DC charging speed in the late 40s in terms of kW consumed.

However, many current EVs are already capable of exceeding that limit. The iD.4 is capable of handling 125kW. However, some of Ev's charging speed is truly pushing the envelope. In optimal circumstances, a Tesla Model 3, IONIQ5, or Porsche Taycan can handle over 250kW.

So it's not as simple as you may imagine. If you approach a DC charger and notice that it is rated for 350kW.  Relax, since your Mazda MX-30 can only handle roughly 10percent of that.


  • DC fast chargers charge more quickly than AC chargers and are simpler to use.
  • When autos must travel across the country, DC quick charging is preferred.
  • It is not necessary to leave the DC charger plugged in overnight. Because it is capable of quickly recharging a battery.
  • DC chargers are also extremely efficient in charging high-power battery packs. It can produce additional power to meet the demands of the batteries.
  • The DC charger has a high capacity to recharge in a short amount of time and to meet the demands of customers. In comparison to an AC charger, which takes 4-10 hours to completely charge batteries, a DC power pack takes only 15-minutes.

Charging expenses and DC charger constraints

The charging rates are falling as the need for a level 2 charger grows. Instead, the majority of them are available for free. However, when it comes to level 3 chargers or DC chargers, a user must not just spend extra. Most pricing rates are based on per-minute use.

Aside from the price of DC rapid charging, the battery may overheat. It might be hazardous to the battery and create an explosion if it overheats.


So, hopefully, you now understand what DC fast charging is and how it works. You should also understand why AC home chargers are slower. The next time you need to charge your EV's battery, you'll be able to make an informed decision depending on your circumstances. Choose wisely and you will save time and money. For more information, you should explore PIWIN .

Efficiency: DC charging stations are increasingly integrated with renewable energy sources, such as solar and wind, enhancing the sustainability of EV charging.