The battery life of your Garmin watch may be affected by how you use the watch. The information in the tables below is presented to help outline the conditions used to determine the estimated battery life specifications. Usage beyond what is listed below may result in reduced battery life. The information presented below is a reference-only guide for general use of the Forerunner 265 series of products.
The following usage assumptions were used to determine the estimated battery life for the Forerunner 265 Series. Unless otherwise stated, all default software settings and configurations are assumed for battery life specifications.
Forerunner 265 Smarthwatch Mode Usage Assumptions - Default Display Configuration
| Notifications per Day | 50 |
| Number of Interactions per Day | 160 |
| Device-Generated Alerts per Day (Move or Goal Alerts) | 2 |
| Hours per Day Outside of Bluetooth Range of Phone | 1 |
| Display Brightness and Timeout | Default Settings |
| Watch Face | Default |
| Number of Gestures per Day | 750 |
| Average Number of Hours per Day Spend Outside | 5 |
| Pulse Ox Mode | Disabled by Default |
| Number of Minutes of Streaming Music | 0 |
| Number of Timed Activities | 0 |
Battery Life | Up to 13 Days |
Forerunner 265 Smarthwatch Mode Usage Assumptions - Display Always On Mode
| Average Number of Hours per Day Spent Outside2 | 5 |
| Watch Face | Default |
| Average Number of Hours per Day Sleep3 | 8 |
| Display Timeout | Always on |
Battery Life | Up to 5 Days |
Forerunner 265 Activity Mode Usage Assumptions
| Number of Interactions per Hour | 10 |
| Minutes of Interaction Post-Activity | 1 |
| Number of Gestures per Hour | 25 |
| Display Brightness & Timeout | Default Settings |
| Assumed Temperature Range for Battery Life Specifications | 10C-40C |
GPS-Only Mode without Music Battery Life | Up to 20 Hours |
SatIQ (AutoSelect) Mode without Music Battery Life | Up to 16 Hours |
All Systems + Multi-Band Mode without Music Battery Life | Up to 14 Hours |
GPS-Only Mode with Music Battery Life | Up to 7 Hours |
SatIQ (AutoSelect) Mode with Music Battery Life | Up to 6.5 Hours |
All Systems + Multi-Band Mode with Music Battery Life | Up to 6 Hours |
Forerunner 265S Smarthwatch Mode Usage Assumptions - Default Display Configuration
| Notifications per Day | 50 |
| Number of Interactions per Day | 160 |
| Device-Generated Alerts per Day (Move or Goal Alerts) | 2 |
| Hours per Day Outside of Bluetooth Range of Phone | 1 |
| Display Brightness and Timeout | Default Settings |
| Watch Face | Default |
| Number of Gestures per Day | 750 |
| Average Number of Hours per Day Spend Outside | 5 |
| Pulse Ox Mode | Disabled by Default |
| Number of Minutes of Streaming Music | 0 |
| Number of Timed Activities | 0 |
Battery Life | Up to 15 Days |
Forerunner 265S Smarthwatch Mode Usage Assumptions - Display Always On Mode
| Average Number of Hours per Day Spent Outside2 | 5 |
| Watch Face | Default |
| Average Number of Hours per Day Sleep3 | 8 |
| Display Timeout | Always on |
Battery Life | Up to 5 Days |
Forerunner 265S Activity Mode Usage Assumptions
| Minutes of Interaction Post-Activity | 1 |
| Number of Gestures per Hour | 25 |
| Display Brightness & Timeout | Default Settings |
| Assumed Temperature Range for Battery Life Specifications | 10C-40C |
Battery Life - GPS-Only Mode without Music | Up to 24 Hours |
Battery Life - SatIQ (AutoSelect) Mode without Music | Up to 18 Hours |
Battery Life - All Systems + Multi-Band Mode without Music | Up to 15 Hours |
Battery Life - GPS-Only Mode with Music | Up to 7.5 Hours |
Battery Life - SatIQ (AutoSelect) Mode with Music | Up to 7 Hours |
Battery Life - All Systems + Multi-Band Mode with Music | Up to 6 Hours |
1The “default” watch face is the watch face present on the device when it is taken out of the box. The Forerunner 265 products are designed to work with a variety of native watch faces as well as compatible Connect IQ watch faces. The usage of watch faces other than the default watch face may impact the battery life experienced in smartwatch mode.
2 This device utilizes an ambient light sensor to automatically adjust the display brightness to an acceptable level depending upon the level of ambient light. Using the device outdoors in bright environments may reduce battery life.
3 The average number of hours per day of sleep is determined by the user-configured bed and wake times (a "sleep period"), not the number of hours the user actually sleeps. During this sleep period, the device's display is turned off. As a result, setting a shorter sleep period may decrease the battery life experienced in display always on mode.