I am heading to FL for the next 4 months and leaving my Ford F150 Lightning vehicle in my garage in Western NY. The garage is not heated but connected to my house. Temperatures in my garage could reach single digits in the dead of winter. I also do not have internet access at this location in the winter months. The ford Owners Manual says to do the following for long term storage: Battery Systems

Maintain the high voltage (HV) battery state of charge at approximately 50%.
Once achieved, disconnect the 12-volt (12V) battery to reduce system loads on the HV battery. Note: Before disconnecting, be sure to have your key fob and access to a copy of your Owner's Manual outside of the vehicle.

So my question is, if I charge the vehicle to 50% and then disconnect the 12V battery, do I leave the vehicle still plugged in in my garage? Do I have to set up a charging schedule or will the fact the vehicle is plugged in maintain it to 50%? If I need to set up a charging schedule, please provide specifically what I would need to do. Will this charging take place if the 12V battery is not plugged in and there is no internet connection? Please reply as soon as possible! Thank you in advance for your help.

 

With temperature that cold, you want to protect your high voltage battery. I would certainly not remove the 12 volt battery, I would leave the vehicle plugged in with the maximum charge rate set to as close to 50% as possible. I know a Tesla can be set to 50%, I am not familiar with whether you can do that on the lightning or not.

You want the vehicle to stay plugged in, with its 12 volt battery in place so that it can protect itself from those temperatures.

 

Is a battery tender in the frunk plugged into an outlet in the frunk jumping to the 12V battery in the frunk akin to the self-licking ice cream cone?

Too bad the truck would have to be 'on' for four months.