A320 Fire warning on ground with battery only.
I'm a little bit confusing about fire warning on ground with battery only situation.
Last day in simulator, I rejected takeoff due to engine fire during takeoff roll, and I just followed ECAM action and shut down both engines after discharging both agent. Of course, all DUs became blank and only the dome light lit. Then I wondered if engine fire goes out or not because no red light on Fire Pb was available.
My understanding is that on ground with battery only, we have no aural warning and warning light because of no powered FWC, despite the engine fire detector is working.
Is it correct?