No Full Charge. Too cold

[NW Ontario Ford Lightning]

This is interesting. Can you tell if the SOC increases after the initial charge at plug-in, during the shorter cycles before your window opens? I am wondering if it is simply keeping the battery warm because the charge cycle has already started when you plugged in, and it knows it needs a warm battery to hit the target SOC in your window.

I can see the SOC doesn't move during those cycles, it follows the same pattern as a cycling hot-water-tank maintaining a set temperature. It uses the full 24A power available but it doesn't change the SOC.
The reason I wanted to point this out: the short 15-20 minute power cycles, every 4-5 hours even in the minus 30 temps should mean the "too cold to charge" is not really the issue. The only thing holding back my charging is the Ford App preferred charge time, the plug is live the whole time from 5pm to next morning. The truck knows what it's doing, it minimizes energy used while waiting for the target charge time.

Sponsored

 

[Adventureboy]

"too cold to charge"

It will definitely heat the battery if it is too cold to charge. I plugged in early one morning for 1.5 hours on my 9.6kw charger and out of 16kWh delivered, less than 2 kWh went to the battery because the rest went to heating it first.

 

[Robocop]

One thing to note:
A Flash (or any other EV with a 48A on board charger) will never input more than 48A to the vehicle. So the net charge rate will reduced by the power required to run the heater. The vehicle cannot get “extra” power from an 80A EVSE to power the heater.

This is the answer right here. The OP's truck has 48A on board so it cannot accept 80A. Since the OP hasn't responded to confirm if his truck has dual on-board chargers, we have to assume it doesn't based on what we know about the model year. The truck can only charge at 48A, that is it, so it will take a little longer when it is cold.

Sponsored