Checking the remaining battery charge
You can check the remaining battery charge of the rechargeable batteries of the headset and the charging case by the following operations.
If the remaining battery charge of the headset becomes low when the headset is removed from the charging case or while using the headset
If a warning beep sounds and the voice guidance says, “Low battery”, charge the headset as soon as possible.
When the battery becomes completely empty, a warning beep sounds, the voice guidance says, “Battery is empty”, and the headset automatically turns off.
When you are using an iPhone or iPod touch
When the headset is connected to an iPhone or iPod touch over an HFP (Hands-free Profile) Bluetooth connection, it will show an icon that indicates the remaining battery charge of the headset on the screen of the iPhone or iPod touch.
The display position is an example.
A: Remaining battery charge of the headset
B: 100% - 71%
C: 70% - 51%
D: 50% - 21%
E: 20% or lower (requires charging)
The remaining battery charge of the headset is also displayed on the widget of an iPhone or iPod touch running iOS 11 or later. For more details, refer to the operating instructions supplied with the iPhone or iPod touch.
The remaining charge which is displayed may differ from the actual remaining charge in some cases. Use it as 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, select [Settings] - [Device connection] - [Bluetooth] to display the remaining battery charge of the headset as “100%”, “70%”, “50%” or “20%” in the connected Bluetooth device column. For details, refer to the operating instructions for the Android smartphone.
The remaining charge which is displayed may differ from the actual remaining charge in some cases. Use it as a rough estimate.
Checking the remaining battery charge of the charging case
- If the indicator (orange) on the charging case lights up when both headset units are removed from the charging case, or when the charging case lid is opened or closed with no headset units stored, the remaining battery charge of the charging case is about 20% to 1%. The charging case cannot sufficiently charge the headset with this remaining level of battery charge.
- If the indicator on the charging case does not light up when both headset units are removed from the charging case, or when the charging case lid is opened or closed with no headset units stored, the remaining battery charge of the charging case is less than 1%. The headset cannot be charged with the charging case in this case.
Hint
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The remaining battery charge of the headset may be different on the left and right sides depending on how you use them.
When checking the remaining battery charge on an iPhone/iPod touch or Android smartphone while using both headset units, the remaining battery charge of the headset unit with less remaining battery charge between the left and right headset units is displayed. When using only one headset unit, the remaining battery charge of the headset unit you are using is displayed. - You can also check the remaining battery charge of the headset unit and the charging case with the “Sony | Headphones Connect” app. Android smartphones and iPhone/iPod touch 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/iPod touch 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 immediately after a software update or if the headset has not been used for a long time. In this case, repeatedly charge and discharge the battery multiple times to properly display the remaining battery charge.
