Feely, 20, has made two appearances since joining the Cumbrians for a month-long stay, but will return to Charlton on Wednesday.
"Kevin is a great lad who put a lot of work in to everything he did from the moment he got here," manager Greg Abbott told the club's official website.
"It's been a tough month for us, but he has shown a fantastic attitude throughout.
"We've brought Troy Archibald-Henville in this weekend and centre-back is now a position we feel we have plenty of cover for. Kevin leaves here with our very best wishes."
- Sports & Recreation