Battery percent increasing after unplugging

[TaxmanHog]

Here is an example of departure timer while on the plug after the truck had already been at my desired set point of 90% from yesterday's charging session.

At 0732 this morning the truck kicked into battery warming phase when I turned the master control switch ON for previously established times.

The FCSP ramped quickly to 9+ KW flow for about 4 minutes, this is when charging the HVB is happening, then tapered back to PTC current flow only at 8 KW to 4 KW.

The remaining time was warming the battery until 0745 when cabin warming phase began, the truck continued conditioning until 0800, a normal cabin only conditioning session consumes approximately 1.5 kWh, this morning it was 3.1 kWh

I didn't pay any attention to the GOM in the truck as we drove to the breakfast shop, but after arriving, I looked at the Ford App and it showed 91% after the 1.5 mile drive.

The past three days of afternoon daily charging with daily and overnight cold soaking has induced a need to cycle the battery warming phase, so much that the conversion loss appear greater, actually that is the energy going to actively warm the HVB each charging session.

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[chriserx]

I'm sure it's been posted by now but I haven't seen one, CarScanner on AC charge using mobile connector until my OpenEVSE is off backorder. 6.65 kW draw, 6 kW net to battery at 60F, leaving a 90% charging efficiency.

 

[chl]

I'm sure it's been posted by now but I haven't seen one, CarScanner on AC charge using mobile connector until my OpenEVSE is off backorder. 6.65 kW draw, 6 kW net to battery at 60F, leaving a 90% charging efficiency.

That pretty much agrees with what I see from the "Insights" my FCSP and the Ford app displays about losses to inefficiencies (wiring charger etc.), although my numbers are usually closer to an a 5% or 6 % loss.

For example, 9.533kWh used reported by the FCSP, and 9.00kWh added to the battery according to Ford app charge history.

However there may be some rounding off or other estimations used for the 9.00kWh the app reports.

And there may have been some battery pre-warming involved - it was a 'cold' night this Jan., by cold I mean below 40F maybe in the low 30F's.

Some energy gets used on cold nights even when not charging - I keep the truck plugged in any night the temp is going below 40F - but I haven't quantified it.

 

[chriserx]

Yeah, my intent was to go check and do the same while it was balancing and compare overhead but I got sidetracked and missed my window, I kinda wanted to do the same with this cold snap that's about to hit and compare but I kinda think all cold weather analytics when combined just end up being a fruit salad instead of apples to apples.

 

[chl]

We're supposed to get down to -7F Friday, then major snow maybe 10" and followed by ice storms.

Going to charge up to 100% in case I need to back up the house with PPOB through the GENERAC 6853 transfer switch.

A lot easier, and quieter than cranking up the gasoline generator - I did that once at 7am when it was 10F and an ice storm had cut power, no fun!

 

[JRDM2]

Generator drone gets old quickly. One reason I went with this truck and insisted on the top tier PPOB.

 

[chl]

Generator drone gets old quickly. One reason I went with this truck and insisted on the top tier PPOB.

Agreed, me too, had to be 9.6kW or no deal.

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