Charges personnel put through cash registers (7)
I believe the answer is:
thrills
'charges' is the definition.
('thrill' can be a synonym of 'charge')
'personnel put through cash registers' is the wordplay.
'personnel' becomes 'HR' (Human Resources).
'put through' indicates putting letters inside.
'cash registers' becomes 'tills' (I've seen this before).
'hr' placed into 'tills' is 'THRILLS'.
(Other definitions for thrills that I've seen before include "Delights" , "Waves of excited feelings" , "Excites" , "Exciting sensations" , "Excitement" .)