Intentional cold soak -15

[Maxx]

Speaking of gauge elements I don’t fully understand, what is the meaning of the energy guard not going to 100?

Sorry if any of this is obvious or redundant. Just to add a bit to what others have already said; there are multiple reasons that bar drops. As you use more of the energy the voltage of the cells drop (usually from closer to 4V to 3.5V on the cell lever and in 400V to 300V on pack level). Voltage is like the hight/depth of water in a damn. The higher, the more power. So when you see SOC bar going down really low, the power bar goes down too.

The cold makes less energy available as well. I was just preconditioning my battery (plugged in without charging the battery). At my temps (in 20s). It zaps the battery for 12 minutes (1.5 kWh) every 6-10 hours to get the battery temp to around 41F. When battery temp is going up, I can see SOC remain the same while energy numbers going up. That energy number may be something truck uses to calculate range. Here are a few things I am looking at.

 

[TaxmanHog]

I've seen similar this week, my truck did an afternoon thermal bump up when I plugged in , then another a little after 6 am this morning.

Tuesday 1/7

Wednesday 1/8 morning spontaneous battery condition, no departure timer, manual activation of charger or remote start.

 

[Maxx]

. I was just preconditioning my battery (plugged in without charging the battery). At my temps (in 20s). It zaps the battery for 12 minutes (1.5 kWh) every 6-10 hours to get the battery temp to around 41F. W

I just noticed my previous statement may be incorrect. My charger limit is set around 7KW and the battery heater uses around 9KW. What I was seeing was just the energy sent by the charger. It looks like heating system takes energy from the battery to make up the difference. In my previous observation truck SOC was above charging limit I had setup so charger never tried to charge the battery back up to make up what was taken from it during preconditioning process. It looks like this time when SOC was at charging limit, 2.6 KW was used not 1.5 KW to heat the battery. Those of you that pay closer attention to what your truck is doing please share how much energy your preconditioning uses. Please share what is your charger limit is set at.

 

[Scorpio3d]

It is a benefit to have third party's give away energy as a fringe benefit $taxable$ event?

I envy folks living in low cost energy jurisdictions, be it the raw cost of oil or juice or local tax impositions causes much of the disparity with one person to the next.

It kind of makes me feel bad for griping about electric prices here!

These are the current high-end and low end prices near me and I grab about that because I used to get 8 cents to 10 cents.
Don’t kill the messenger!

 

[TaxmanHog]

It kind of makes me feel bad for griping about electric prices here!

These are the current high-end and low end prices near me and I grab about that because I used to get 8 cents to 10 cents.
Don’t kill the messenger!

If that's all inclusive , ie. distribution included, then it's great deal, just the energy portion of my bill is $0.15784 a kWh, while the distribution portion is $0.19550 a kWh

 

[Scorpio3d]

If that's all inclusive , ie. distribution included, then it's great deal, just the energy portion of my bill is $0.15784 a kWh, while the distribution portion is $0.19550 a kWh

Yes, those are all in prices. Here is the cheapest one for 12 months, you can do a three or six month plan for a little bit less maybe a penny or so, but that would get you into summer when rates usually go up.

 

[Grumpy2]

It is probably our future everywhere there is limited ability for renewable sources other than nuclear? However, Constellation must have plenty of money ...

NEW YORK (Reuters) -U.S. nuclear power provider Constellation Energy on Friday agreed to buy privately held natural gas and geothermal company Calpine Corp for $16.4 billion, one of the biggest acquisitions in U.S. power industry history.

The cash-and-stock deal comes at a time of rising electricity demand, driven by the proliferation of energy-guzzling AI data centers and the electrification of transportation and buildings, which are expected to hit a record this year. Including debt, the transaction valued Calpine at $26.6 billion.

https://finance.yahoo.com/news/constellation-energy-buy-calpine-26-120411891.html

 

[TaxmanHog]

I just noticed my previous statement may be incorrect. My charger limit is set around 7KW and the battery heater uses around 9KW. What I was seeing was just the energy sent by the charger. It looks like heating system takes energy from the battery to make up the difference. In my previous observation truck SOC was above charging limit I had setup so charger never tried to charge the battery back up to make up what was taken from it during preconditioning process. It looks like this time when SOC was at charging limit, 2.6 KW was used not 1.5 KW to heat the battery. Those of you that pay closer attention to what your truck is doing please share how much energy your preconditioning uses. Please share what is your charger limit is set at.

I did another run of departure time session to see how much energy would be pulled, note my FCSP is set to maximum capacity, at 80 amps, 19.2 kW, but usually the truck only pulls about 75 amps at 240v or 18 KW at highest demand.

I had already fully charged to 90% last night to close out my energy logs for the prior week, I had left the limiter at 90% overnight. But since lowered it to 50% for the rest of the week to continue monitoring spontaneous conditioning demand, temps this week should not be brutally cold, but next week will have some single digits nights.

This morning we had grocery run to make at 6:55 out the door, so I set a 6:45 departure time.

The truck decided it should start preparing the battery at 5:58 am, then cabin phase started at 6:40, got the READY notification at 6:45, I pulled the plug around 6:58. Interestingly the Fordpass said it was at 90% SOC, but when I started her, it bumped up to 91% looks like a got a little top-off from the prior 60 minutes of activity.

After driving ~6 miles in total, the SOC settled back to 90%, so 11.331 kWh to go 6 miles.
Normally I'll pull 1.5 to 2.0 kWh just for cabin conditioning over a 15 minute period, that leaves 9 kWh for warming the battery. It's just not worth the effort in my limited driving demands.

I'm going back to monitoring the spontaneous warming cycle, which have been running for approx 10 to 12 minutes at least once in the overnight period, the event time has varied from 1 am, 2 am & 6 am, this is probably based on pack temps triggering the cycle.

 

[Maxx]

I did another run of departure time session to see how much energy would be pulled, note my FCSP is set to maximum capacity, at 80 amps, 19.2 kW, but usually the truck only pulls about 75 amps at 240v or 18 KW at highest demand.

I had already fully charged to 90% last night to close out my energy logs for the prior week, I had left the limiter at 90% overnight. But since lowered it to 50% for the rest of the week to continue monitoring spontaneous conditioning demand, temps this week should not be brutally cold, but next week will have some single digits nights.

This morning we had grocery run to make at 6:55 out the door, so I set a 6:45 departure time.

The truck decided it should start preparing the battery at 5:58 am, then cabin phase started at 6:40, got the READY notification at 6:45, I pulled the plug around 6:58. Interestingly the Fordpass said it was at 90% SOC, but when I started her, it bumped up to 91% looks like a got a little top-off from the prior 60 minutes of activity.

After driving ~6 miles in total, the SOC settled back to 90%, so 11.331 kWh to go 6 miles.
Normally I'll pull 1.5 to 2.0 kWh just for cabin conditioning over a 15 minute period, that leaves 9 kWh for warming the battery. It's just not worth the effort in my limited driving demands.

I'm going back to monitoring the spontaneous warming cycle, which have been running for approx 10 to 12 minutes at least once in the overnight period, the event time has varied from 1 am, 2 am & 6 am, this is probably based on pack temps triggering the cycle.

I am mostly interested in the spontaneous warming cycle because I assume that is triggered when it hits a minimum temp and stops when it hits a high threshold which would be the same for all of us. It would be a little more involved to figure things out based on the schedule departure because when it kicks in, the battery temp could be higher that minimum temp we just talked about so theoretically it should take less energy to get it up to the high temp (which we don't even know if it is the same high as the instantaneous trigger).

Regarding your 90% jumping to 91%, I have seen this even when I am unplugged. Sometimes when I charge to 70% and unplug, next day I see it a few percent higher. I am not sure it is because temperature may be different or because I very rarely charge to 100% or let it go bellow 30% and my BMS is a little more confused than most.

My drives are short as well and conditioning to get energy back is definitely not worth it for me. I only do it because of an article I read that said bellow freezing conditions can lead to cracking and thermal runaway down the road and that freaked me out a little. Logically, I am thinking with 8 year warranty, ford has set up the BMS so that wouldn't happen for at least 8 years but I plan to keep the truck until it dies and I am hoping that does not coincide with my house getting barbecued along with the truck. All that to say, I only do it for battery health and if it is 2.6 KWh a pop (10.4 Kwh a day). That is expensive maintenance. But if it does save me a module replacement after warranty, it may be worth it.

Your 19.2 KW max charging makes your numbers for instantaneous conditioning more reliable than mine. If you see any more of those events in the middle of the night please do share how many KWhs it cost you.

 

[TaxmanHog]

Your 19.2 KW max charging makes your numbers for instantaneous conditioning more reliable than mine. If you see any more of those events in the middle of the night please do share how many KWhs it cost you.

I'll continue morning observations on this thread for the next two weeks, lows in the teens and single digits coming soon.

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