If this is the supercharger located at Alvarado-Niles Rd &, Decoto Rd, Union City, CA 94587 near the Safeway, then I would warn you, many homeless and vagrant looking people in the immediate vicinity. This was in the middle of the week in the middle of the day. Definitely will avoid here after dark.
Slow charging rate so I bailed after about 10 minutes, did not leave my vehicle unattended.