11kW Charge Rate From Ford 48A EVSE?

[cswebster]

Folks:

I’ve been noticing on my new ‘25 GT that I’m only getting ~9.8kW or so charge rate from my Ford EVSE on a 60 amp circuit. Should I be expecting the full 11kW from the EVSE to the onboard charger?

Please advise.

Thanks!

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[E90alex]

The app reports the energy entering the battery so there is some AC to DC conversion loss there.

 

[GreaseMonkey]

Folks:

I’ve been noticing on my new ‘25 GT that I’m only getting ~9.8kW or so charge rate from my Ford EVSE on a 60 amp circuit. Should I be expecting the full 11kW from the EVSE to the onboard charger?

Please advise.

Thanks!

These figures are consistent with what I used to get on a Tesla universal EVSE on a 60 amp breaker. I think you’re good.

 

[Space_Pony]

I usually get 10.5 kw.

 

[tbrumleve]

There is a 10% loss due to AC / DC conversion (inverter). Your numbers are within spec. 11kW (line) - 10% = 9.9 kW (battery)

 

[TheVirtualTim]

The charger has configuration setting (DIP switches) to configure the amperage that the car is allowed to draw. Check the book that came with the charger. You can open it and compare to the DIP switches settings to verify that they are set correctly. If it is set to 48 amps ... then your car gets 48 amps X whatever voltage the utility company is supplying.

I saw “whatever voltage” because 240v power is often not precisely 240v. Utility companies can vary … I think it‘s +/- 5%. If it is exactly 240v (I’ve tested mine a few times with my multimeter and it often shows 245v — still within spec.) then you get 11.4 kW that the car will “draw”.

There are also some charging losses (resistance that converts to heat instead of stored energy) … so typically what the FordPass app reports will be a little less than the draw.

 

[that_macheguy]

Also make sure your settings are tuned up in the FordPass app for the charger.

 

[Adventureboy]

It can also be caused by a local drop in voltage at your mains. I have this happen in one of my charge locations in the evening. It is on the edge of a wind farm and charge rate can drop 10% when the wind dies down at night. It isn't the EVSE.

 

[MonkeyNutz]

It can also be caused by a local drop in voltage at your mains. I have this happen in one of my charge locations in the evening. It is on the edge of a wind farm and charge rate can drop 10% when the wind dies down at night. It isn't the EVSE.

Yeah, wanted to point that out as well. There are more factors than efficiency loss in the AC/DC conversion. The inbound voltage level and service quality play a role. Not to mention other factors like ambient temperatures. Charging a car is a dynamic process within a dynamic environment. At 9.8kW, he's a bit on the low side, but it's still performing far above optimal of what would come from a 50A circuit. So it seems his equipment is set right and doing just fine. "within spec"

 

[jav_eee]

I see 10.4 on mine when charging at 48 amps.

 

[ryano7700]

I have had two—first one died after 1 year— they both register 10.4 kw.

 

[ericNdfw]

There is a 10% loss due to AC / DC conversion (inverter). Your numbers are within spec. 11kW (line) - 10% = 9.9 kW (battery)

Yep.
Here’s an example using my Grizzl-E Ultimate 48A EVSE. Car reports 10.5kW while the EVSE reports 46.59A (11.2kW)

It's also not just the inverter; if the battery cooling system activates I wonder if the charge rate goes down commensurately or will the EVSE provide extra power to compensate?

 

[Maquis]

I’ll take “Overanalysis” for $600, Alex.

 

[E90alex]

It's also not just the inverter; if the battery cooling system activates I wonder if the charge rate goes down commensurately or will the EVSE provide extra power to compensate?

You will not notice anything on your end from the car or from the EVSE. Other than maybe the estimated charge time will increase.

 

[ericNdfw]

You will not notice anything on your end from the car or from the EVSE. Other than maybe the estimated charge time will increase.

Yeah, I guess that would make sense if the compressor and fan are running off the HV battery while it's being charged as opposed to directly powered by the charger.

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