Quotewhile the activator is on the E-Cat is off.
This tells me that the magnetic field produced by the heater the surrounds the mouse stops the stimulation that flows from the mouse to the cat.
Being blocked by a magnetic field produced by the heater, the stimulation is most likely a charged particle, most likely a muon flux from the mouse to the cat.
Replicators who have seen a COP of 1.1 or 1.2 would be well served to surround their reactor with many unpowered drones to test the muon stimulation theory.
The E-Cat may be using a muon chain reaction to increase COP.