The maximum battery runtime of the AVENTHO 200 was tested in the beyerdynamic labs and is up to 63 hours.
The battery runtime of the AVENTHO 200 depends on the options actually used (e.g. EQ, ANC, selected codec) and the current volume.
If all options are switched on at high volume, the runtime is 40 hours, as stated on the packaging.
At lower volume (80 dB) and fewer options, a runtime of up to 60 hours (without ANC) can be achieved.