Over the last seven days the Addicks have collected seven points from a possible nine, which has all but secured their status as a Championship club for another campaign.
"It has been a pivotal week, to get seven points and a real gritty, dogged point at Brighton. We have to do these things to survive in the Championship," said manager Powell.
"We knew we had that tag of least home wins, but that's gone now. Our away form has kept us going, and during the international break I thought that we had four home games we could win.
"To beat Leeds was fully deserved, we have Wolves and Bristol City and we can keep carrying on. Any point in the Championship is massive. I don't want our players relaxing. I've set them no targets."
Next up for Powell's team is a trip to Barnsley on Saturday afternoon.