Power supply cut-off in standby mode

Examples of computing devices for cutting-off power supply of an electronic device in a standby mode are described herein. In an example, a computing device may include a battery and an embedded controller. The embedded controller may determine a charge stored in the battery at a time interval when the computing device is in a standby mode. Upon determining that the charge stored in the battery is below by a threshold value, the embedded controller may retrieve activity data from a memory of the computing device. The activity data may include a list of electronic devices that draw power from the battery of the computing device. The embedded controller may cut-off power supply of an active electronic device from the list of electronic devices.