The purpose of a battery control unit is generally to isolate the battery 1 - from the bus when the battery charge has been completed 2 - when there is a battery overheat condition 3 - in case of an internal short circuit 4 - in case of a fault on the ground power unit The combination which regroups all of the correct statements is:
Domanda 533, Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license