https://vixra.org/pdf/2101.0158v1.pdf
Quanta magazine: Black holes become electrically charged when charged stuff falls into them. Physicists calculate that black holes have an “extremal limit,” a saturation point where they store as much electric charge as possible for their size.
SEE also:
Primordial Black Holes and dual Herbig Haro Effects for Star-Galaxy formation https://vixra.org/pdf/2101.0158v1.pdf
Primordial Black Holes and dual Herbig Haro Effects for Star-Galaxy formation https://vixra.org/pdf/2101.0158v1.pdf