“During charging I turn it on to full sound and it discharges completely, after 7-8 hours. How is it possible?”

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• It looks like this model has a battery issues. It holds a charge after you power off.

  Answered by vlad 4 years ago

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• Hi Taras, When you use the speaker at a loud volume for a long time, the battery may run low even if the speaker is connected to an AC outlet (Note). You may refer to this link for more information: https://helpguide.sony.net/speaker/srs-xb40/v1/en/contents/TP0001270191.html?search=volume ~Ralph

  Answered by SonyListens 7 years ago

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