This part of IEC 63296 specifies the methods for measuring the battery duration at defined sound pressure levels for continuous music playback of battery-powered loudspeaker equipment. A primary battery or secondary battery can be used as a power source for the loudspeaker and it
IEC 63296-1:2021 history
2021IEC 63296-1:2021 Portable multimedia equipment - Determination of battery duration - Part 1: Powered loudspeaker equipment