The youngster signed for the Addicks on a season-long deal.
He told chelseafc.com: "The main difference is the intensity. It's much quicker. A lot of the games are non-stop. There isn't a lot of time on the ball. Technically it is not massively different but there are some quality players who have played in the Premier League and found themselves in League One.
"Playing in front of crowds has been a big difference too, but it's what everyone aspires to be doing. At first it takes you back but it's something I enjoy.
"I have a good relationship with the fans and it keeps building. From the start they gave me a good reception and have given me a lot of support since. I am grateful for that."