What is the battery lifetime and operational time of my Polar Unite?
Polar Unite has an internal, rechargeable battery. Rechargeable batteries have a limited number of charge cycles. You can charge and discharge the battery over 500 times before a notable decrease in its capacity. The number of charge cycles also varies according to use and operating conditions.
The battery operating time is:
- Up to 50 hours in training mode with wrist-based heart rate and connected GPS, or
- Up to 4 days in watch mode with continuous heart rate tracking.
The operating time depends on many factors, such as the temperature of the environment in which you use your Unite, the features and sensors you use, and battery aging. Phone notifications and frequent syncing with Flow app will also decrease the battery life. The operating time is significantly reduced in temperatures well below freezing. Wearing Polar Unite under your overcoat helps to keep it warmer and to increase the operating time.
The Continuous heart rate tracking is on by default in Polar Unite. Keeping the Continuous heart rate tracking on in your Polar Unite will drain the battery quicker. Using the night-time only mode will extend the battery life. You can turn the Continuous heart rate tracking on, off or to night-time only mode on your watch in Settings > General settings > Continuous HR tracking.
Backlight always on during training: With always on the watch display will be illuminated throughout your training session. The backlight setting will default back to automatic after you finish your training session. Please note that selecting always on will drain your battery much faster.