Following fool's gold drained light battery (7)
I believe the answer is:
assault
'battery' is the definition.
(synonyms)
'following fool's gold drained light' is the wordplay.
'following' is a charade indicator (letters next to each other).
'fool's' becomes 'ass' (ass is a kind of fool).
'gold' becomes 'Au' (Au is the chemical symbol for gold).
'drained' suggests removing the centre.
'light' with its centre taken out is 'lt'.
'ass'+'au' is 'assau'.
'assau'+'lt'='ASSAULT'
(Other definitions for assault that I've seen before include "set about" , "Attack violently" , "Strike" , "Sudden violent attack" , "Attack physically" .)