Q-FFF = Quantum Function Follows Form at the stringy quantum scale.
The origin of different charged Bh zones, is counter intuitive
At the outside of the Bh horizon the negative charged electrons are separated due to their low mass and less gravity attraction on to the Bh..
Equal sized black holes tend to form stable pairs called Herbig Haro systems, with a white hole in between, also called wormhole.
The white hole (wormhole) can be interpreted as the location with the lowest vacuum pressure position forming a sink hole and even a pressure cooker effect for stars (star clusters) or failed stars, depending on the size of the BH pair.
The Bh locations can be interpreted as the positions with the highest vacuum pressure, because black holes eat the oscillating stringy Axion -Higgs vacuum leading to concentrated pressure gravity without the counter acting (new physics) graviton pressure assumed to be present around baryonic matter such as stars, planets etc. called “dipole repeller gravity”
Equal Sized Rigid String Based New Black Holes do not Merge, But Form Herbig Haro Systems.
Star Forming Herbig Haro system HH34: two equal sized stringy Stellar Anchor Black Holes (negative charged SABHs / Bowshocks) with Star forming Sink (White Hole) in the middle. ( Quantum FFF Model) see: http://vixra.org/pdf/1707.0224v4.pdf
A support for the charged massless black hole postulate can be found in: "Firewalls in General Relativity"
David E. Kaplan and Surjeet Rajendran
We have shown that charge and mass separation within the interior of a black hole can lead to dramatic changes to the interior geometry while leading to the same exterior.
In particular, the interior geometry can lead to the existence of singular ( charged) firewalls at the event horizon of a Schwarzschild (or Reissner-Nordstrom) black hole and the inner-horizon of a Reissner-Nordstrom black hole.