How to choose the right EV charger?

When you want to start an EV charger business, how to choose the right EV charger?

The 135th Canton fair ended up successfully and we got many inquiries about EV chargers from customers from Indonesia, South Africa, Columbia, etc. where the EV market is in its infancy stage. When you start an EV charger business, you need to know the following firstly.

What kind of EV dominates your country’s market?

To choose a suitable EV charger to start the EV charger business, you need firstly to know the EV market so that you can decide the kind of charging connector. In terms of AC charging, GB/T for Chinese EVs, type 2 for European cars and type 1 for American and Japanese electric vehicles, NACS for Tesla. In terms of DC charging, GB/T for Chinese EVs, CCS 2 for European cars CCS1 for American and CHAdeMO for Japanese electric vehicles, and NACS for Tesla.

charging connector

For example, Peru is dominated by Japanese cars such as Toyota and Nissan (manufactured in Europe), so drivers use EV chargers with CCS 2 charging connectors. But BYD, Great Wall, Chery, and Changan also come in, so the GB/T gun is also needed. Jordan imports all kinds of EVs so charging point operators may ask for charging stations with GB/T, CCS2, and CHAdeMO guns.

Distinguish between home charging, street charging, destination charging, and fast charging.

Home charging

Drivers can install home use EV chargers at home to charge their EVs during off-peak me to save money. According to the battery capacity, drivers can choose:

3.5kw 16A single phase 220V (generally for hybrid EV with small battery) 11kw 16A three phase 380V 22kw 32A three phase 380V
7kw 32A single phase 220V 11kw 50A 220V single phase (generally for the American market)

Drivers can employ multiple charging methods: Plug-in and charging, RFID card, or APP control which supports schedule charging and current adjustment.

Home charging app

If you are a car dealer or in the industry of spare parts for cars or electronics, you can start with a home-use EV charger.

Street charging

Street charging is more common in Europe. With an EV charger integrated into the lamppost, street charging provides a big advantage compared with fast charging. And there are already light manufacturers seeking cooperation with EV charger manufacturers.

Destination charging

When you have a resort, own a restaurant, or something like that, your customers will always stay for a couple of hours and park their EVs somewhere where they can charge their EVs. This is destination charging. In this way, you can choose EV chargers featuring in billing systems (APP e-wallet or online RFID card or credit card reader)) with the following specifications.

11kw*2 16A three phase 380V 22kw*2 32A*2 three phase 380V
43kw*2 63A three-phase 380V (generally for EV trucks, vans, and some other EVs with big batteries) 60kw (*2) DC charger three phase 380V 120kw*2 DC fast charger three phase 380V
Fast charging

Fast charging means that you need to charge and go immediately. The fast charging station is always installed on the highway or equipped in the gas station. As per the EV market, you can choose a DC charger ranging from 60kw to 600kw.

Fast charging station

How to calculate the charging time?

For Comfort with an 11kw on-board charger and 60.48kwh battery capacity, it will take 6.5 hours to finish charging when drivers use an 11kw EV charger and 0.5 hours using a 150kw charger from 30%-80%. (60.48/11≈5h, 60.48*0.5/150≈20minand then you need to take efficiency and battery management system into account. Generally, you can add 40min in the AC charger and 10 min in the DC charger)It is better to check the specifications of the EV and know the testing conditions under the statistics. (temperature is significant).

How far can the EV run after charging?

1 kW is equivalent to 5-7 km.

So for BYD Atto 3, 29 min 150kw charging(from 30%-80%) means about 150km.

How much should the driver pay for charging?

Take BYD Atto 3 in China for example:

If you charge during off-peak time at home, 0.2RMB/1kwh, you need to pay 12RMB(1.68USD).

If you charge during peak time at home, 0.5RMB/1kwh, you need to pay 30RMB(4.2USD).

If you charge outside, it depends on the unit price the charging point operators set. If 1 RMB/1kwh, you need to pay 60RMB(8.3USD) from SOC 0-100%.


Q1: What is SOC?

A1: State of charge, that is how full the capacity is.

Q2: What is OBC,

A2: OBC is a charger in the car to convert AC from the power grid into DC which can be stored in the battery. So, in this way, an AC charger is not a charger but a power supply with various control and protection.

Q3:Why does the EV spec write SOC 30%-80%

A3: Because when the SOC arrives at 80%, the speed of charging will decrease as if AC is slow charging.

Q4: In Peru, all the charging stations are equipped with CCS 2 guns. Can I use CCS2 to GBT adaptor to charge my BYD?

A4: For AC charging is Okay, but for DC, the charging protocol is different.


If you are to resell an EV charger, you can choose the mode 2 portable EV charger or home wall box.

If you are to build a charging hub, as per your demand, you can choose a commercial use AC/DC EV charger with a billing system, and the output power is based on how long the driver will stay in the charging hub as well as the battery capacity of the EV.

No matter what kind of EV charger you need for your business, BLUESKY offers reliable charging solutions including both EV chargers and backend systems.

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