Isn't there some handshaking that needs to be done between SpC and vehicle before current starts flowing? Besides, as long as you clean one terminal at a time, you should be fine.Trying to clean contacts on a supercharger handle that is not disconnected at the source is not a safe practice. Should not ever be attempted. As for the rest - I have to conclude that either your claim of power cut backs all over the country is a gross exaggeration, or the hypothesis of dirty contacts is off. My bet is on the former.
Sorry @verygreen for jumping in here...please continue. Enjoying this immensely.