Notes on charging

Life span of the built-in lithium ion battery

  • Even if you do not intend to use the speaker for a long time, charge the built-in battery sufficiently once every 6 months to maintain its performance.

  • If the speaker is not used for a long time, it may take longer to charge the built-in battery.

  • The rechargeable built-in battery has a life span. As time passes and the number of times that the built-in battery is used increases, the capacity of the rechargeable built-in battery slowly decreases. When the amount of time that the built-in battery can be used seems significantly shorter, despite having been fully charged, contact Sony support contact or your nearest Sony dealer.

  • When the amount of time that the built-in battery can be used seems significantly shorter, it could mean that the rechargeable built-in battery has expired.

  • The life span of the rechargeable built-in battery differs depending on the usage, environment, and storage method.

Caution

When the speaker detects an abnormality in the interior temperature or in the built-in rechargeable battery, the power indicator on the speaker starts double flashing in orange.

If an abnormality is detected, disconnect the USB cable and wait for a while. Then, press and hold the power button on the speaker for about 10 seconds to restart it. If the problem persists, contact Sony support contact or your nearest Sony dealer.

Note

  • Charging time varies depending on built-in battery usage conditions.

  • Charge the speaker in an ambient temperature between 5 °C and 35 °C (41 °F and 95 °F). Be aware that the room temperature may fall to 5 °C (41 °F) or lower depending on the season, for example, especially in wintertime.

  • The speaker becomes warm during charging. This is not a malfunction.

  • Avoid exposure to rapid temperature change, direct sunlight, mist, sand, dust, or mechanical shock. Also, never leave the speaker in a car parked in the sun.

  • As long as the speaker is connected to an AC outlet by a USB PD compatible AC adaptor, the speaker's built-in battery is capable of charging itself even while the speaker is turned on. However, it may take a long time before charging completes depending on the usage of the speaker. It is recommended that you turn off the speaker before battery charging.

  • For safety reasons, the speaker automatically stops charging in the following cases.

    • When the speaker is charged in an extremely cold or hot environment

    • When charging takes too long

    To resolve this issue, disconnect the USB cable and connect it again when the battery charging temperature is between 5 °C and 35 °C (41 °F and 95 °F).

  • If the built-in battery is under a high load during charging, charging stops for safety. In such a case, turn down the volume or stop the playback.

  • If you are playing music while the speaker is charging or in a location with high ambient temperatures, the volume may be automatically adjusted for safety reasons.

  • Charging from a USB hub is only guaranteed when you use a self-powered USB hub that carries an authorized logo.