1. Power consumption of the speaker varies under different usage scenarios. For example, enabling Ultra‑Bass will increase power draw.
2. During real‑world use (or when the temperature is below 0 °C), factors such as high volume, audio bitrate of the playing content, and environmental interference will affect battery life. We recommend lowering the volume appropriately to improve battery performance.
3. Please update the speaker firmware to the latest version (Nothing X App > Settings > Firmware Update).
4. If the suggestions above do not resolve your issue, long‑press the button on the speaker for 10 seconds to perform a factory reset, then try again.