Checking the remaining battery charge

You can check the remaining battery charge of the rechargeable battery in the following ways.

Check on your smartphone

  • When you are using an iPhone (iOS 13 or later)
    When the headset is connected to an iPhone via an HFP (Hands-free Profile) Bluetooth connection, you can check the remaining battery charge of the headset on an iPhone. For details, refer to the operating instructions supplied with the iPhone.
    The remaining charge which is displayed may differ from the actual remaining charge in some cases. This is a rough estimate.
  • When you are using an Android™ smartphone (OS 8.1 or later)
    When the headset is connected to an Android smartphone via an HFP Bluetooth connection, you can check the remaining battery charge of the headset on the smartphone. For details, refer to the operating instructions supplied with the Android smartphone.
    The remaining charge which is displayed may differ from the actual remaining charge in some cases. This is a rough estimate.

Check with the power button

When you press the power button (A) while the headset is on, a voice guidance indicating the remaining battery charge can be heard.

Illustration indicating the location of A

“Battery about XX %” (The “XX” value indicates the approximate remaining charge.)

“Battery fully charged”

The remaining battery charge indicated by the voice guidance may differ from the actual remaining charge in some cases. This is a rough estimate.

The indicator also flashes in orange for about 15 seconds if the remaining battery charge is 10% or lower when the headset is turned on.

Check with the voice guidance notification

When the rechargeable battery becomes low, the voice guidance will play in the following cases.

  • When the headset is turned on
  • When using the headset

When the battery becomes completely empty, an alarm sounds. The voice guidance plays, then the headset automatically turns off.

Hint

  • You can also check the remaining battery charge of the headset with the “Sound Connect” app. Android smartphones and iPhone both support this app.

Note

  • If the headset and smartphone are not connected with HFP, the remaining battery charge will not be correctly displayed.
  • If you connect the headset to an iPhone or Android smartphone with Media audio (A2DP) only in a multipoint connection, the remaining battery charge will not be displayed correctly.
  • The remaining battery charge may not be properly displayed in the following situations. In that case, repeatedly charge and discharge the battery multiple times. The remaining battery charge will then be properly displayed.
    • When using the headset for the first time after purchase
    • When the headset has not been used for a long period of time
    • Immediately after a software update
TP1002085415