Notes on charging, Notes about the built-in battery of the speaker, Help guide – Sony SRS-X7 User Manual

Page 239: Caution

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Personal Audio System

SRS-X7

Notes on charging

Caution

If the speaker detects a problem while charging the battery, the CHARGE indicator may turn off, although charging is not

completed.

Check for the following causes:

Ambient temperature exceeds the range of 5 °C – 35 °C (41 °F – 95 °F).

There is a problem with the battery.

Note

Charging time varies depending on battery usage conditions.

Charge the speaker in an ambient temperature of between 5 °C and 35 °C (41 °F and 95 °F).

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

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

Avoid exposure to rapid temperature change, direct sunlight, moisture, sand, dust, or mechanical shock. Also, never

leave the speaker in a car parked in the sun.