Mode 2 and Mode 3 define AC charging methods (IEC 61851). Mode 2 is portable charging done between the vehicle and a normal or industrial (CEE) socket via a protection box (IC-CPD) integrated into the cable; this box provides residual-current and temperature protection, but because the power is limited by the socket's rating, Mode 2 is relatively slow and is more of an emergency/occasional-use or travel solution. Mode 3, on the other hand, is permanent AC charging done through a fixed charging station (wallbox), with the vehicle and station in continuous communication; because the current is adjusted safely, it offers higher power and a safer charge suitable for daily use. The wallboxes in homes, workplaces and residential-complex car parks operate in Mode 3. Bemis produces both Mode 2 portable charging solutions and Mode 3 fixed AC wallbox devices. In practice, where there is no fixed station a Mode 2 device plugged into a socket provides backup/emergency charging, while for daily charging a wall-mounted Mode 3 wallbox at home is both faster and safer; that is why Mode 2 is usually the complementary solution carried in the boot, and Mode 3 is the main daily setup.
The difference between Mode 2 (portable, IC-CPD protected, plug into a socket) and Mode 3 (fixed wallbox, continuous communication) AC charging.
Frequently Asked Questions
What is the difference between Mode 2 and Mode 3 charging?
Mode 2 is portable charging done between the vehicle and a normal or CEE socket via a protection box (IC-CPD) integrated into the cable; because the power is limited by the socket, it is relatively slow. Mode 3 is permanent AC charging through a fixed station (wallbox), with the vehicle and station in continuous communication; it offers higher power and is safer.
Should I prefer Mode 2 or Mode 3?
Mode 2 is mostly a complementary solution carried in the boot for emergency or occasional use and travel. For daily charging, a wall-mounted Mode 3 wallbox at home is both faster and safer. Bemis produces both Mode 2 portable solutions and Mode 3 fixed AC wallbox devices.