Loss of power, shortage in fight (8)

I believe the answer is:

blackout

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'loss' is the definition.
(I have seen 'Loss of consciousness ' mean 'blackout' so perhaps 'loss' could also mean 'blackout')

'power shortage in fight' is the wordplay.
'power shortage' becomes 'lack' (I've seen this before. I am not sure about the 'power' bit.).
'in' is an insertion indicator.
'fight' becomes 'bout' (synonyms).
'lack' going inside 'bout' is 'BLACKOUT'.

'of' is the link.

Can you help me to learn more?

(Other definitions for blackout that I've seen before include "Compulsory darkness during wartime, or temporary loss of memory" , "Loss of light, consciousness, or information" , "Faint" , "Temporary loss of consciousness or electric power" , "Loss of consciousness - temporary power cut" .)

I've seen this clue in The Times.

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