I’ve got a 2023 XLT Standard Range, and I’m charging it at a station with a 100-amp breaker set to 80 amps. I know my truck can’t handle the full 19 kW, but shouldn’t I be seeing at least 11 kW instead of just 10 kW?
What you’re seeing is normal. The truck reports the actual power going into the battery, not what the charger is outputting.
Your onboard charger maxes out at 48 amps. 48 x 240 = 11.5 kW, but there’s always some energy lost in the process, usually around 10%. That brings it down to about 10.4 kW, which can fluctuate slightly. So yeah, 10.1 kW is pretty standard.
@Tobi
Thanks for explaining that! I’m using a hardwired ChargePoint 48A with a 20-foot J1772 extension cord, and the best I’ve seen is 10.2-10.4 kW. I thought maybe the extension cord was causing losses, but your breakdown makes sense.
@Reed
Happy to help! I had the same confusion at first since my old Tesla reported the power at the wall, not what actually made it into the battery.
XLT Standard Range trucks are capped at 48 amps because they only have one onboard charger. Unless you bought the Sunrun home power equipment, you’re never going to use that full 80 amps.
Also, check the voltage at your charger. If it’s below 240V, it’s normal for the charge rate to drop. The Ford app shows the power delivered to the battery after accounting for efficiency losses, which can be around 5-10%. For example, my ChargePoint Home Flex shows about 11.2 kW output, but the Ford app reports closer to 10.5 kW.
@Keir
Sunrun might sell you the equipment, but good luck figuring out what you’re actually paying for. Their sales process feels like a puzzle with too many missing pieces.
Charging losses are normal. My XLT Extended Range maxes out at around 17 kW, but I’ve never seen it hit 19 kW either.
I think the truck’s software limits the charge rate depending on the battery’s state of charge. Have you tried charging from a lower percentage to see if it makes a difference?
At 50%, the highest I’ve seen is 10.4 kW.
Darian said:
At 50%, the highest I’ve seen is 10.4 kW.
That’s expected. About 10% of the energy is lost during charging due to heat. A reading of 10.4 kW means about 9% efficiency loss, which is normal.
Your AC charging speed shouldn’t slow down like it does with DC fast chargers. What’s your charger’s amperage setting in the app?
Tan said:
Your AC charging speed shouldn’t slow down like it does with DC fast chargers. What’s your charger’s amperage setting in the app?
It’s set to 80 amps.
Tan said:
Your AC charging speed shouldn’t slow down like it does with DC fast chargers. What’s your charger’s amperage setting in the app?
It’s set to 80 amps.
Do you have a 100-amp breaker feeding the charger?
@Lyle
Yes, I do.
The FordPass app shows the energy actually going into the battery. Your onboard charger maxes out at 11.2 kW (48 amps at 240V). After accounting for charging losses, only about 10.1 kW gets into the battery, which is what the app reports. This is totally normal.
I think charging slows down after the battery gets to 80%. Try letting it drop to 30% and then plug it in to see if the rate improves.
Vic said:
I think charging slows down after the battery gets to 80%. Try letting it drop to 30% and then plug it in to see if the rate improves.
It doesn’t slow down on Level 2 charging unless you’re hitting close to 100%. Mine starts slowing down around 98%.
Vic said:
I think charging slows down after the battery gets to 80%. Try letting it drop to 30% and then plug it in to see if the rate improves.
Yeah, Level 2 charging doesn’t taper like DC does. The truck just reports the actual intake after accounting for efficiency losses.
At 240V, it sounds like you’re pulling about 42 amps.
Ira said:
At 240V, it sounds like you’re pulling about 42 amps.
A lot of home chargers are only rated for 40 amps. I’ve seen some hardwired ones that can go up to 50 amps though.