I have had my Model 3 just over a year now and in the first year I only super charged 4 times. Tesla just installed super chargers near my house. I have been there 2 times and both times during the charge I hear a small bang several times and last night I felt it under my feet. While charging I called Tesla. All he can come up with is maybe the metal in the car expanding or contracting. The outside temp was 49°. Anyone else experience this while super charging?