Well, I didn’t know that.
I knew lithium was more sensitive to cold n would drain quicker, even if not used.
I didn’t know, turning g a phone back on when the cold has “frozen it” or just drained it, would damage the battery.
Living in South West England, it’s rarely freezing, let alone colder than about -4 C° (and that’s more wind chill than actual temp).
@AnkerTechnical , is this due to that email I sent you recently?