[oil pan 4]

Real electric supercharger obviously do exist, but most are a ridiculous stamped sheet metal fans on a motor so small that it could never produce any boost, no matter what kind of air pump you drive with it.

To spot a fake electric super charger look for stamed sheet metal fan sitting a top an electric motor with a price tag of under $250.
The other faux electric super charger is a boat bilge fan. Usually all plastic, squirrel cage fan and cheaper than the stamped sheet metal fan since all the seller had to do was buy the bilge vent fan from tne local marine store and put it in a cool looking box.

The real electeic super charger will come with a real supercharger price tag. Will have a compressor, most likely roots type or centrifugal type blower. Not a fan.
The electric motors will be rather large.

To do something rather modest such as boost a sub 2L engine to 5psi at 3000rpm at sea level on a 70°F day is going to take a compressor that can put out around 2.5hp.
To get a 12v electrical system to provide 1hp is going to require about 61 amps.
If you wanted performance level power you are taking about needing hundreds of amps to drive a compressor rated in tens of horsepower.

To get the 150 or so amps to run a 2.5hp supercharger you are going to need 2ga wire.
150 amps is going to be about the power the starter motor uses during engine start. The OEM electrical system isnt going to hold up to that kind of use at all.