Your Descent™ G2 watch can perform a variety of functions, and any function the watch performs will require some power from the battery. Some functions, and how often you use them, will require more battery than others. Listed below are various steps you can take to help maximize the battery life on your watch.
If your battery is being used faster than expected, read the information below to learn about settings and features that have a greater impact on battery usage.
The default settings for your watch were configured to balance performance with battery life. Changed settings may be the cause of increased battery drain. If you forgot the settings you changed, you can restore the default settings for your watch. For help see, Reset Default Settings .
NOTE: Settings for the options listed below are located in the watch menu. Not all watches will support all listed features. Refer to your owner's manual for feature compatibility, and exact setting locations.
Pulse OX: Using All-Day Acclimation or During Sleep modes with the pulse oximeter will use the battery at a higher rate. To conserve battery life, it is recommended to set the acclimation mode to Manual Check. While set to Manual Check the watch will only analyze your oxygen saturation when you view the pulse oximeter widget.
Display: How bright the display is set and how often it comes on can use battery more quickly or less quickly. Having the brightness set at max or having a longer Display timeout will use a lot of battery while the display is on. Try adjusting the Display settings, and turn off Always On to find a balance for battery usage.
GPS: When enabled you will see a higher battery use, which is why GPS tracking is only activated during activities or navigation.
Bluetooth: Occasional text notifications and use of other connected features will drain far less battery than continually receiving texts, answering the phone, or getting weather updates.
Connected Sensors: Additional connected sensors like HRM chest straps, power meters, or Bluetooth headphones all require additional power from the watch to stay connected.
Watch Face: Some watch faces, apps, widgets, and data fields may draw more power depending on how many things they do or whether they use GPS positioning or not.
Widgets: Some widgets update data when you select them, like weather. Widgets like Altimeter, Barometer, and Compass (ABC sensors) are always active.
Hold 
.
Select System.
Select Reset.
Select Reset Default Settings.
Press 
to confirm.
Select Yes.
If your watch is paired to your phone, you will need to pair the watch back to the phone after resetting. For help on pairing your watch to your phone, refer to your owner's manual. For additional resources on pairing your watch, see - Garmin Connect App Bluetooth Troubleshooting.
Garmin recommends using a Garmin charging cable, and making sure the charging contacts on the watch and charging cable are free and clear of debris. For instructions on how to clean the charging contacts, see - Cleaning the Battery Contacts on a Rechargeable Garmin Watch.
Make sure your watch is up to date on software. We recommend using Garmin Express to make sure your software is the most current version - Using Garmin Express to Update Your Watch's Software.
Significant battery use can sometimes occur if an activity or another feature is left running in the background. See Stopping an Activity for steps on how to stop an activity on the watch.
You may also try the following steps to power the watch off and back on to perform a power cycle:
Hold 
.
Select Power Off.
Select Yes.
The watch will power off.
for three seconds to turn on the watch.The watch will power on.
Some information to help Product Support determine what might be using the battery more than expected:
Is the display set to Always On, and is Gesture enabled?
How often are you performing GPS activities, and how long are they?
Is Pulse Ox enabled? If so, what is it set to?
What is the battery estimate in days on a full charge, and how many days does it take to completely drain the battery?
What kind of watch face are you using? Does it display current heart rate?