Internal Charger Loss

[TheDon]

I know this was most likely asked and answered but I can't find it....

When charging with the Mobile Charger (14-50, 10-30, ...) how much charging loss is there. I know that the car tells me how many kW that were added to the battery, but how much is wasted in heat, running the charger and the like.
(I have a M3 AWD 2019)

Thanks....

 

[AlanSubie4Life]

I know this was most likely asked and answered but I can't find it....

When charging with the Mobile Charger (14-50, 10-30, ...) how much charging loss is there. I know that the car tells me how many kW that were added to the battery, but how much is wasted in heat, running the charger and the like.
(I have a M3 AWD 2019)

Thanks....

It’s a Mobile Connector - the charger with the majority of the losses is located in the car. Mobile Connector has extremely low loss as it is just a glorified switch.

Yes it has been measured before.

Good data being gathered currently here by @darth_vad3r:

API charging data

Short answer is there is ~250-350W fixed overhead (TBD the number) and the chargers are about 95% efficient.

In the end this means about the best you can do (at high charge rates) is around 90% efficiency.

 

[JulienW]

It’s a Mobile Connector - the charger with the majority of the losses is located in the car. Mobile Connector has extremely low loss as it is just a glorified switch.....

...and the same applies to all Level 2 charging stations. Only DC chargers (like Superchargers) bypass the car's charger.

 

[TheDon]

....
Mobile Connector has extremely low loss as it is just a glorified switch.

Short answer is there is ~250-350W fixed overhead (TBD the number) and the chargers are about 95% efficient.

In the end this means about the best you can do (at high charge rates) is around 90% efficiency.

Thanks for the help and sorry for mistyped Mobile Connector. A 5%-10% addition to what the car says to what the energy provider bills for is not that bad.

I will look at the thread you gave in more detail.

Thanks