Emergency consumer pack using current for power (6)
I believe the answer is:
crisis
'emergency' is the definition.
(a crisis is an emergency)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for crisis that I've seen before include "Calamity" , "a difficult situation" , "Time of severe difficulty" , "A decisive or dangerous time" , "Crucial point - decision time" .)