The 21-year-old defender becomes Nathan Jones' third signing of the window following the arrivals of Harry Clarke and Lyndon Dykes.
Check out a galley of photos from Chambers' signing day below...
After completing his loan switch, Chambers said: "I'm over the moon. I know how passionate the fans are about the club and having played against Charlton last season, I know how good The Valley is so I can’t wait to get going.
"We’ve obviously got a big game on Saturday, so I’m looking forward to playing in front of the fans and showing them what I’ve got.
"Fans can expect me to be passionate, brave, strong on the ball, a lot of crosses and hopefully a lot of goals and assists on the way as well."
The Addicks return to The Valley on Friday, February 6th to take on Queens Park Rangers. Click here to purchase your tickets now.
