I had a discussion today on uses/value of Level 1 charging. I mentioned that in addition to: 1) true commuters driving no more than 35-40 miles a day; 2) airport long-term (>72 hours) parking lots; 3) college dormitory students who drive only on weekends and park for 4 days; there was, 4) parking in very cold weather just to keep the battery warm (condition the battery). I was told that Teslas can condition the battery ONLY at 240 or > volts, and that my Bolt was probably the same. I thought that when the battery gets really cold, it can use its own charge to condition or ANY voltage being supplied by being plugged-in. I garage park at home in WV (cold winters, but not many below zero days), so have never experienced cold conditioning. Can we condition at 120VAC or only when Level 2 charging?