Dispose of Tesla, perhaps charging without joy (6)
I believe the answer is:
devour
'dispose' is the definition.
(thesaurus)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for devour that I've seen before include "Eat greedily" , "Quickly consume" , "Consume greedily" , "Wolf" , "Guzzle" .)