Charging times for the BMW i4 eDrive40 by charger type. 10 to 80% is the standard comparison because rapid charging slows sharply above 80%.
Charging the BMW i4 eDrive40 at home
A 7kW home wallbox is the workhorse. From 10% to 80% takes about 8h 58m, and a full charge from empty about 12h 49m, which fits comfortably overnight. On a cheap overnight tariff window, that is also the cheapest way to run the car by a distance.
A standard 3-pin socket manages around 2.3kW. A full charge that way takes roughly 38h 59m, so treat it as a backup rather than a routine.
The car's on-board AC charger takes up to 11kW, so on a 22kW public AC post it still charges at 11kW: about 5h 42m for 10 to 80%.
Rapid charging on trips
On a 50kW rapid charger, 10 to 80% takes about 1h 36m. On a rapid charger that can match the car's 205kW peak, that drops to about 31 minutes.
These are real-world estimates, not brochure figures: cars only hold their peak rate for part of the session, and the rate tapers steeply above 80% to protect the battery. That is why topping up to 80% and driving on beats waiting for 100% on every trip.
Cold batteries charge slower. In winter, expect the first rapid stop of the day to run behind these times until the pack warms up.
Related on The EV Pros
BMW i4 eDrive40 servicing near you
Every business on The EV Pros is checked for EV competence, so your BMW is worked on by people trained for high voltage systems.