iRobot Roomba Combo Essential Owner's Manual page 9

Charging
EN
NOTE: Your robot comes partially charged, but we recommend that you
charge the robot for 4 hours prior to starting the first cleaning job.
8 For more information, visit global.irobot.com
Power icon indicator while charging
White: fully charged
Pulsing white: charging
Place the robot on the charging dock to activate the battery.
If your robot needs to recharge mid-clean, the cleaning job will be cancelled and
your robot will return to its charging dock.
The robot uses a small amount of power whenever it is on the charging station.
You can place your robot in a further-reduced power state when not in use. For
instructions and more details on this Reduced Power Standby Mode, refer to the FAQ
page on our website.
For long-term storage, turn off the robot by removing it from the charging station
and holding down for 9 seconds. Store the robot in a cool, dry place.