How to Improve the Garmin D2 Delta and D2 Delta S Battery Life

If you are charging your Garmin D2 Delta more frequent than expected, it could be due to the amount of usage or settings being used. Below is a list of functions that could cause the battery to drain faster than anticipated, for instructions on enabling or disabling these, visit the "Customizing Your Device" section in the owner's manual. 

 NOTE: It is important that before you address some of the functions that affected battery life, that you first make sure your watch is up to date: How to Install Software Updates to My D2 Delta Series Watch

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Some of the functions are redundant, for example; steps and activities are uploaded both through WiFi and the Bluetooth connection to the Garmin Connect Mobile application. If using the Garmin Connect Mobile app continuously, it may be a good idea to turn off the Auto Upload setting to help conserve battery power. The Storm Alert function of the Barometer when a smart phone updates local weather is another redundant battery drain.

If battery drain still continues after making some settings changes, try returning the watch to factory defaults and seeing how long the battery lasts on a full charge without pairing it to smartphone again. If the battery lasts like it used to, then the battery drain would be the result of the choice of customized settings on the watch, or Bluetooth connected features.