EV Charging Modes Explained: What Are Mode 1, Mode 2, Mode 3 and Mode 4?
Mode 2 charger, Mode 3 cable, Mode 4 fast charging… We explain in plain language what electric vehicle charging modes mean, how they differ from connector types, the difference between a portable charger and a wallbox, and which mode suits the way you charge.
When shopping for a charger, you will often come across terms like “Mode 2 charger”, “Mode 3 cable” or “Mode 4 fast charging” in product descriptions and forums. These terms are different from connector types and can seem confusing at first. But once you understand the logic behind them, it becomes much easier to judge what each device is for, which cable to use where, and whether your home needs a dedicated installation.
In this guide, we explain electric vehicle charging modes in plain language: what Mode 1, Mode 2, Mode 3 and Mode 4 mean, how they differ, and which one suits your everyday needs.
What is a charging mode? Is it the same as a connector type?
No. A connector type (such as Type 2, CCS2 or CHAdeMO) describes the physical shape of the plug and socket. A charging mode describes where and how the vehicle draws its power, in other words which piece of equipment handles the safety and communication functions during charging.
Charging modes are defined by IEC 61851-1, the international standard for electric vehicle conductive charging systems. The standard sets out four charging modes. The first three cover alternating current (AC) charging, and the fourth covers direct current (DC) charging. If you are curious about connector types, take a look at our guide to Type 2, CCS2 and CHAdeMO.
Charging modes at a glance
| Mode | Current type | Charged from | Protection and communication | Typical use |
|---|---|---|---|---|
| Mode 1 | AC | Standard socket, direct connection | No control or communication between vehicle and socket | Not recommended for electric cars |
| Mode 2 | AC | Household or industrial socket | In-cable control and protection box | Portable chargers |
| Mode 3 | AC | Permanently installed charging unit (wallbox, AC station) | The charging unit itself | Daily charging at home, in car parks and at work |
| Mode 4 | DC | DC fast charging station | The station itself; the cable is fixed to the station | Fast charging on the road |
Mode 1: Why isn’t it used?
In Mode 1, the vehicle is plugged directly into a standard socket without any control or communication equipment. There is no “intermediary” between the vehicle and the socket to check whether charging is safe. For this reason, Mode 1 is not considered a safe method for electric cars and is practically never used with today’s cars. You will mostly see it used for charging small vehicles such as e-bikes and e-scooters.
Mode 2: Portable chargers
In Mode 2, the vehicle is again charged from a socket, but the cable has a control and protection box built in. This box communicates with the vehicle so that charging only starts when everything is in order, and it provides protection against issues such as residual current. The products we usually call “portable chargers” fall into this mode.
Advantages of Mode 2
- No installation needed: Simply plug it into a suitable earthed or industrial socket and start charging.
- Portable: You can use the same device at your holiday home, a relative’s house or at work.
- Flexibility: On some models, the current or power level can be adjusted to suit the electrical installation.
What to watch out for
- The socket must be earthed, and the circuit must be able to handle a continuous load for hours at a time.
- Use a low power setting on household sockets, and only choose high power modes on circuits and sockets rated for them.
- Never use thin, unearthed or reel-type household extension leads.
Among WiseCar’s Mode 2 portable chargers, the WiseCar WTP1 runs at a fixed 3.5 kW and is designed for use with standard earthed household sockets. The WiseCar WTP2 lets you switch between 3.5 kW (16A) and 7.4 kW (32A) modes at the touch of a button. The WiseCar WTP3 offers adjustable power settings of 3.5 kW, 7.4 kW, 11 kW and 22 kW plus mobile app support; the higher power settings require a three-phase installation.
Mode 3: Wall-mounted chargers (wallboxes)
In Mode 3, the vehicle is charged from a charging unit permanently installed on a dedicated circuit. Home wallboxes and AC charging stations in car parks fall into this mode. The charging unit itself takes care of control, protection and communication with the vehicle.
Advantages of Mode 3
- A permanent, tidy solution: Because it is installed with a dedicated circuit, a suitable breaker and residual current protection, it is the most orderly option for anyone who charges in the same place every day.
- High AC power: If your installation and vehicle allow it, you can charge at up to 7.4 kW on single-phase, or 11 kW or 22 kW on three-phase.
- Smart features: Features such as a mobile app, user management and RFID card access are mostly found on devices in this class.
Among WiseCar’s wall-mounted models, the WiseCar WTA3 offers 11 kW and 22 kW power options. The WiseCar WTL delivers 22 kW of AC charging power, and there is also a WTL 7.4 kW Single-Phase model for single-phase installations. Where wall mounting isn’t possible, consider the WTL with stand. We explain how to prevent unauthorised use in shared car parks in our guide What Is an RFID Card Charger?
What does “Mode 3 cable” mean?
Some AC charging points have no fixed cable, only a Type 2 socket. At these points, you connect your vehicle to the charging unit with a cable that has a Type 2 connector on both ends. These cables are usually called “Mode 3 cables” or “Type 2 to Type 2 charging cables”. There is no control box on this cable, because the charging unit handles the control function. That is why a Mode 3 cable cannot be used by plugging it into a socket.
For this purpose, the WiseCar 22 kW Type 2 Charging Cable comes with a 32A three-phase rating and in 5 and 8 metre length options, with a carry bag included in the box. The power your vehicle draws still depends on the limits of the charging point and the vehicle’s on-board charger.
Mode 4: DC fast charging
In Mode 4, the vehicle is connected to a fast charging station that supplies direct current (DC). The key difference from the other modes is this: with AC charging, the on-board charger inside the vehicle converts the electricity into the DC the battery can use. With DC charging, this conversion happens inside the station and the energy goes straight to the battery. As a result, charging can take place at much higher power levels without being capped by the vehicle’s on-board charger.
At Mode 4 stations, the cable is fixed to the station; the common connector in Türkiye and Europe is CCS2. Because these stations are expensive, professional infrastructure, they are usually found at roadside charging points, shopping centres and charging network sites. For home use, AC charging, meaning Mode 2 and Mode 3, is the go-to option.
Which mode is right for you?
| Your situation | Sensible solution |
|---|---|
| You want to charge from a socket without having anything installed | Mode 2 portable charger |
| You charge your car in different places (holiday home, work, a relative’s house) | Mode 2 portable charger |
| You charge in the same place every day and want a permanent, tidy solution | Mode 3 wall-mounted charger |
| You want access control and user tracking in a shared car park | A Mode 3 device with card access and an app |
| You also want to use AC charging points that have no cable | A Type 2 to Type 2 (Mode 3) cable in the boot |
| You need to charge quickly on long journeys | Mode 4 DC fast charging stations |
For many drivers, the ideal setup is to charge overnight at home with a Mode 3 wallbox or a Mode 2 portable charger, and to use Mode 4 stations on long journeys. To work out which power level suits you, see our guide How to Choose an Electric Vehicle Charger.
Charging speed is set by the weakest link in the chain, not the mode
Whether it is Mode 2 or Mode 3, the actual charging power with AC is the lowest of the charger’s power, what the installation can handle and what the vehicle’s on-board charger accepts. For example, if your vehicle accepts a maximum of 11 kW AC, it will still charge at around 11 kW with a 22 kW device. And on a single-phase installation, three-phase power levels cannot be reached. To calculate the charging time for your own vehicle, see our guide How to Calculate Electric Vehicle Charging Time.
Installation and safety
Installing a Mode 3 device requires a dedicated circuit to the charging point, a suitable breaker and residual current protection, and it must always be carried out by a qualified electrician. In the provinces where the service is available, you can use the WiseCar Charging Station Installation Service. Even if you will use a Mode 2 device from a socket, having an electrician check the circuit and socket is the safest approach. If you want to create a tidy, protected charging point for portable chargers on a single-phase circuit, take a look at the WiseCar 2+1 Combination Panel with Breakers (Single-Phase).
WiseCar chargers feature an 8-layer protection system covering over-temperature, overcurrent, undervoltage and overvoltage, circuit breaker, overload, residual current and IP65 water-tightness protection.
Frequently Asked Questions
What is the main difference between Mode 2 and Mode 3?
In Mode 2, the vehicle is charged from a socket and the control function sits in the box on the cable. In Mode 3, the vehicle is charged from a charging unit permanently installed on a dedicated circuit, and the unit itself handles the control function.
Can I plug a Mode 3 cable into a household socket?
No. A Mode 3 cable has a Type 2 connector on both ends and no control box; it is only used with a charging unit that has a Type 2 socket. To charge from a socket, you need a Mode 2 portable charger.
Is a Mode 2 portable charger enough for daily use at home?
For many users, yes. When used on a suitable, earthed circuit, overnight charging with a portable charger is usually enough for everyday driving. If you charge in the same place every day and want a more orderly solution, a Mode 3 wall-mounted charger may be a better fit.
Can a Mode 4 DC charger be installed at home?
DC fast charging stations are expensive, professional infrastructure that require high power. For home use, AC charging, meaning Mode 2 or Mode 3, is a far more common and practical solution.
Does the charging mode determine charging speed?
Not directly. With AC charging, speed is determined by the lowest of the charger’s power, the installation and the AC power the vehicle accepts. DC (Mode 4) charging is usually much faster because it bypasses the vehicle’s on-board charger.
Conclusion
Charging modes describe where your vehicle gets its power from and with what safety equipment. Mode 1 is not used with electric cars; Mode 2 offers flexible charging from a socket with portable chargers, Mode 3 offers permanent, orderly charging with wall-mounted chargers, and Mode 4 offers DC fast charging on the road. Once you have identified the mode that fits your needs, you can choose the right device by checking the AC power your vehicle accepts and your electrical installation.
To find the right charging solution for you, browse WiseCar products or get support from the WiseCar Call Centre on 444 999 1.
This content is for general information only. Charging power and compatibility vary depending on the vehicle model, its on-board charger, the charging device and the electrical installation. All work on electrical installations must be carried out by a qualified electrician.
