I understand that activating the button in the footwell of the FEH uses the 12v battery to warm the HV battery, thereby increasing its ability to provide power. Since the optimal battery temp is 82 F and having the ability of the HV battery to accept as well as deliver power is an important factor in optimal hybrid performance would there be any advantage to using this function routinely during cold weather operations?

Thanks,
DavidH

And greetings from the burbs of Seattle!