Elmer's dashboard

here's a reply from another site...
"If your Roomba Red, Roomba (sage), Roomba Discovery, or Roomba Discovery SE is indicating a full charge, but it only runs for 15 minutes when you press clean, you need to reset the charging system. You can do this by removing the battery from the robot and unplugging the charger from the wall and robot. Please hold the power button down for 30 seconds. You then should charge the robot....."