The Addicks travel to Gillingham on Tuesday for their fourth pre-season friendly of the summer (KO 7.30pm BST).
Dean Holden's side head to Kent on the back of a 1-1 draw with Leyton Orient in southern Spain on Friday.
Charlton and Gillingham last met in August 2022 in a Papa John's Trophy tie, with the Addicks winning 3-0 thanks to strikes from Aaron Henry and Miles Leaburn and a Lewis Walker own goal.
Neil Harris' men finished 17th in Sky Bet League Two last term and come into Tuesday's match on the back of a 2-0 loss at home to Millwall on Saturday.
Tickets can be purchased online right up until kick-off on Tuesday evening. Click here to purchase yours.
Fans worldwide - including those in the UK and Ireland - can watch every kick of the action live on CharltonTV. To purchase your subscription or match pass, please click here.