Huge power draw while sleeping

xxenon

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Hello,

I'm facing an issue where my MME draws a lot of energy from the charger while sleeping. Over the last 3 days (77 hours to be exact), the car was plugged in, off, not charging because target level was reached by far (target 50%, actual 68%). However, the charging station reported a total consumption of 65kwh. This is huge.
It was quite cold (-4C), and I know the MME takes some energy peaks to keep the battery not too cold, but drawing 65kwh for not driving a single mile is not acceptable. Anyone else facing a similar issue?

Many thanks
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RickMachE

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Idling implies you had the engine running while charging at your home. Is that correct?
 
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xxenon

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Idling implies you had the engine running while charging at your home. Is that correct?
Nope, MME was shut down, I haven't used/started it during the 77 hours I mentioned
 

RickMachE

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Well I don't know why your car charged to 68% when you set it to 50%, no.

As far as the energy used, the 88kWh battery using 65kWh would be about 75% or more charged up, depending on what you started at.

Further, it loses energy between the charger and the vehicle. Figure 8 - 12%.
 
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xxenon

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Well I don't know why your car charged to 68% when you set it to 50%, no.

As far as the energy used, the 88kWh battery using 65kWh would be about 75% or more charged up, depending on what you started at.

Further, it loses energy between the charger and the vehicle. Figure 8 - 12%.
It didn't charge. I plugged it in at 68% and it remained at 68% as expected.
All the energy was used for ... something else...
 


Dnorwood98

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Do you have departure times set to precondition your car? If so, some of that could be drawing off the grid to condition both the battery and the cabin for a departure. If not, seems like some kind of error.
 

0t60-3.5

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I would check pre-conditioning settings and/or if the e-heat was on for some reason. That would likely be the most significant power draw after the electric motors engaging to move the car.
 
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xxenon

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I would check pre-conditioning settings and/or if the e-heat was on for some reason. That would likely be the most significant power draw after the electric motors engaging to move the car.
I'll do another 12 hours test next night. Departure time is off, engine & e-heat off.
 

richsi

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News to me, I didn't know a Mach-E had an engine and it idle's? Strange? Perhaps using the terms "READY" or "OFF" would be more appropriate. When plugged in the charger in the vehicle is off or waiting for its next scheduled charge time or command to charge to a higher level.
 

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News to me, I didn't know a Mach-E had an engine and it idle's? Strange? Perhaps using the terms "READY" or "OFF" would be more appropriate. When plugged in the charger in the vehicle is off or waiting for its next scheduled charge time or command to charge to a higher level.
Last I checked the definition of engine is "a machine with moving parts that converts power into motion". Idle = "not working, active, or being used".

Point ... We don't need word police here. We understand what the OP means and his vocabulary is correct.
 
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Neil4Real

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News to me, I didn't know a Mach-E had an engine and it idle's? Strange? Perhaps using the terms "READY" or "OFF" would be more appropriate. When plugged in the charger in the vehicle is off or waiting for its next scheduled charge time or command to charge to a higher level.
Lol, let me guess, you think fuel also only means gas?
 

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I can confirm that the car will pull power from the house while sitting in cold weather. Here is my charger over the last 24 Hours. It was plugged in / reached my desired SOC since then it has hit the charger 3 times, the little blip I believe is when I walked near the car and it woke up.

So far today (since midnight) my car has taken 3.17 kWh which is just the car doing its thing. as the charging was completed last night / not counted in today's total.

The car was not started / no remote start / no departure time. Temp overnight down to 27º and so far its only up to 30º

Ford Mustang Mach-E Huge power draw while sleeping 1642534847217
 

Logal727

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I can confirm that the car will pull power from the house while sitting in cold weather. Here is my charger over the last 24 Hours. It was plugged in / reached my desired SOC since then it has hit the charger 3 times, the little blip I believe is when I walked near the car and it woke up.

So far today (since midnight) my car has taken 3.17 kWh which is just the car doing its thing. as the charging was completed last night / not counted in today's total.

The car was not started / no remote start / no departure time. Temp overnight down to 27º and so far its only up to 30º

Ford Mustang Mach-E Huge power draw while sleeping 1642534847217
Thought this was for the LVB?
 

dtbaker61

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Hello,

I'm facing an issue where my MME draws a lot of energy from the charger while sleeping. Over the last 3 days (77 hours to be exact), the car was plugged in, off, not charging because target level was reached by far (target 50%, actual 68%). However, the charging station reported a total consumption of 65kwh. This is huge.
It was quite cold (-4C), and I know the MME takes some energy peaks to keep the battery not too cold, but drawing 65kwh for not driving a single mile is not acceptable. Anyone else facing a similar issue?

Many thanks
I would say that energy draw is 'predictable'.... if the MME is stored or left plugged in where the ambient temp is -4C, the internal e-heat will remain on to keep battery warm. considering the lack of insulation on the battery tray (for cooling), it's going to suck a lot of energy keeping warm the whole time.

you'd be better off unplugging until 1/2 hour before driving and letting it pre-condition then.
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