Select appropriate power supply for public electric vehicle charger

Select appropriate power supply for public electric vehicle charger

Are you choosing a 50 kW, 100 kW or 350 kW fast electric vehicle (EV) charger? Let's help you make a market-based decision for you.

The use of electric vehicles is growing rapidly. In the next two years alone, more than 200 new battery electric vehicles (BEVS) and plug-in hybrid electric vehicles (PHEVs) will be launched. According to McKinsey & company, 5-9 million electric vehicles will be on the road in the United States by 20301. New business and service models are being opened to meet the needs of extensive charging. As electric vehicles receive more power at a higher speed, DC fast charger (DCFC) is necessary for public and fleet charging.


There are many factors to consider when installing a new DCFC. When deciding which charger is best for the driver and your bottom line, the power output of the charger or the speed 3 of the charger is a key factor. We will focus on the electric vehicle market and cost factors to help understand the choice of charger power supply.

How fast does an electric car charge?

The decision to install the correct EV charger can be determined by the maximum power acceptable to the EV driver. The maximum power acceptance rate of all electric vehicles depends on the vehicle's battery and charging technology, which may vary greatly between different electric vehicle models. For example, the highest charging rate of Chevrolet bolt is 55 kW, while the highest charging rate of Porsche Taikang is 270 kW, which is the highest among today's electric vehicle models.



The adoption rate of commuter electric vehicles is much higher than that of high-end electric vehicles; Therefore, the distribution of electric vehicles on the road is aimed at electric vehicles with lower maximum acceptance power.

There are four main connector types: Tesla, CCS, chademo and type1. Tesla produces special chargers and connectors for Tesla electric vehicles. Public Tesla charging stations are not easy to purchase, which makes it impossible for on-site hosts to own and operate such chargers and connectors. Therefore, the site host has the opportunity to use non Tesla connectors to provide public charging to the electric vehicle market.

Commercial chargers using Type1, CCS and chademo connectors are available from most major EV repair equipment manufacturers. These connectors are compatible with major electric vehicle manufacturers, including Nissan, Chevrolet, BMW, etc. The main users of chargers will be electric vehicle drivers with these connectors and, in some cases, Tesla drivers with adapters

Based on the charging speed distribution of electric vehicle model,AG ELECTRICAL provides many models of charging guns to meet your requirements.


A 350 kW high-power charger can provide sufficient charging capacity to power all electric vehicles now and in the foreseeable future. Even if most EV drivers cannot fully experience this, it can distinguish between site hosts by providing the fastest charging option in a given area. Most fast chargers over 50 kW require a high power input, usually 480 volts, so the electrical infrastructure needs to be upgraded. In addition, the charger host also faces the risk of high energy cost for continuous operation, because the electricity charge increases and the demand cost increases. Although most charged electric vehicles will be lower than the maximum power of the charger, using the maximum power to charge at one time may incur a large cost.

The charger installed with 100-200 kW is suitable for most public electric vehicles. For all fast chargers, consider the mixing between CCS and chademo connectors to serve all non Tesla models. In order to reduce ongoing energy costs and demand costs, consider pairing your station or buying a charger with integrated energy storage. This can effectively buffer the power demand of electric vehicles, with high maximum acceptance rate and low power demand.

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