On a dual-connector AC station, power sharing decides how the available power is split when two cars charge at once. The EV-AC03201T distributes up to 43 kW between its two Type 2 connectors, up to 22 kW each, and adjusts as each car’s demand changes. The fairest setup for most sites is an equal split when both cars want full power, with any unused share passed to the other car, all kept within the site’s supply limit.
Key Takeaways
- Equal split plus dynamic reallocation suits most sites.
- Many cars draw less than 22 kW, so sharing loses little.
- Keep station and site limits within the supply design.
- Tell drivers on signage that power is shared.
Common Sharing Approaches
| Approach | How it works | Suits |
|---|---|---|
| Equal split | Both cars get the same share when both demand power | Public and visitor parking |
| Dynamic reallocation | Unused power from one car goes to the other | Most sites; maximises energy delivered |
| First-come priority | First car gets full power; second gets the remainder | Sites wanting a predictable first session |
| Profile-based limits | Back office sets limits by time or user group | Fleets, workplaces, peak management |
The options available depend on the station’s firmware and the OCPP platform. Confirm which modes your configuration supports before you promise drivers a particular behaviour.
Why Cars Rarely Use Their Full Share
Many cars accept 11 kW on AC and some only 7 kW, so two cars often draw well under 43 kW combined. Dynamic sharing then gives each car what it can use. Power also drops as batteries near full. Our article on which cars charge at 22 kW explains why. This is why dual-connector units can deliver most of their benefit even on supplies smaller than their nameplate maximum.
Setting Site Limits
- Set a maximum current for the station that matches the supply and cable, as designed by the electrician.
- Where several stations share a supply, use load management from the OCPP platform to stay within the site limit.
- Use time-based profiles to reduce charging power during building peak periods.
- Review session data after a month and adjust.
Read whether load balancing increases charging speed and dynamic load balancing explained.
What Drivers Notice
Drivers mainly notice whether their car is charged when they return. Show the current power and estimated time on the station’s screen or app, and explain on signage that power is shared when both bays are in use. Clear communication prevents complaints that the “second car charges slower.”
The EV-AC03201T is a floor-standing dual-connector AC station with two Type 2 connectors, dynamic power distribution up to 43 kW (22 kW per connector), a 7-inch touchscreen, RFID, OCPP 1.6J and IP54 protection.
Frequently Asked Questions
Does the second car on a dual charger always charge slower?
Only when both cars want more power than the supply allows. Dynamic sharing then splits it, often equally.
Can I give one bay priority?
Depending on firmware and platform, you can set profiles or priorities, for example for fleet vehicles.
What happens when one car finishes?
With dynamic sharing, the remaining car can take more power, up to its own and the connector’s limit.
Related Reading
- What Cars Can Charge at 22kW?
- Does Load Balancing Increase EV Charging Speed?
- What Is Dynamic Load Balancing, and Why Does Your Wallbox Home Charger Need It?
- What Is a Dual Port EV Charger? How It Works and How to Choose
