Most telepresence robots can be charged by using a charging dock unique to that particular robot. Many telepresence robots have what we call the "Auto-Docking" or "Auto-Charging" feature. This feature typically involves the remote user simply needing to press a button to have the telepresence robot return to the charger on its own. Some robots will do that from anywhere, while some require you to drive the robot to within clear sight distance or within 10-15 feet of the dock prior to pressing the "Auto-Dock" button.
Additionally, some robots will return to the charging dock on their own when the battery power is low.
If a manufacturer does not include the charging dock in the purchase, this usually signifies that this particular telepresence robot must be plugged directly into a wall socket using an included power cord.