Sorry, I can’t get google to understand my question. But there it is. Have there been studies on this, or have you turned off your car at work, outside at 25 degrees, with 74% charge, only to return to it 9 hours later with 68% charge? Thanks in advance.
I’ve had my '21 Chevy Bolt EV through two Nebraska winters so far where I park at work overnight without a plug for charging. I typically see a charge drop of 1% when the temperature is below ~ 20°F (-7°C) and maybe 2-3% when it’s below 0°F (-18°C). My status screen will show that a few percent of my battery capacity has been used for battery conditioning.
I’ve never been overnight in sub-zero temperatures for more than 8-9 hours without plugging in and it’s never been a problem, no matter how cold it’s gotten.