https://community.sony.dk/t5/portable-audio/battery-life-of-xm4-headphones/m-p/3978202#M13852 <P>XM4 headphones purchased April 2024. Headphones charged to about 100% on a timer - not left on charge for hours. Phone app indicates headphones charged to 100%. discharge to almost zero overnight. Have other users experienced this severe degradation in battery performance? What is the best way to get this fixed?</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 05 Jun 2025 14:22:15 GMT cliverlong 2025-06-05T14:22:15Z https://community.sony.dk/t5/portable-audio/battery-life-of-xm4-headphones/m-p/3978202#M13852 <P>XM4 headphones purchased April 2024. Headphones charged to about 100% on a timer - not left on charge for hours. Phone app indicates headphones charged to 100%. discharge to almost zero overnight. Have other users experienced this severe degradation in battery performance? What is the best way to get this fixed?</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 05 Jun 2025 14:22:15 GMT https://community.sony.dk/t5/portable-audio/battery-life-of-xm4-headphones/m-p/3978202#M13852 cliverlong 2025-06-05T14:22:15Z