If your UltraSync BLUE's battery is running out of power, the LED flashes red and the screen shows 'Battery Power Critical'. The battery level is also shown on the main screen.
To recharge the battery, use the USB-C to USB cable that is supplied with your UltraSync BLUE and a compatible charger socket (not supplied).
Note: Battery life may be reduced if your UltraSync BLUE is used in extreme temperatures. Very hot and very cold conditions can affect battery performance.
