If the music listening time is less than 4 hours with the Redmi Buds 6 Pro, it is because several high-power consumption features are activated simultaneously. These features include ANC noise cancellation, adaptive listening (which can be disabled via the Xiaomi Earbuds APP), dimensional audio, and LDAC codec. When all these functions are turned on, the earbuds consume maximum power, significantly reducing their battery life.
To extend the listening time, it is recommended to disable features that are not frequently used. By doing so, the power consumption of the earbuds can be reduced, and their battery life can be significantly improved, allowing for longer usage sessions.