We tested Bluetooth speakers with expert listeners, and we concealed the identities on the speakers to eradicate bias. For all 25 speakers we tested, the average battery life was a little bit under 17 several hours. The Sony Ult Discipline 7 wins the title for best battery life (30 https://www.bluetoothspeaker.top/oem-portable-bluetooth-speaker-stereo-hifi-heavy-bass-wireless-cube-subwoof-loudspeaker/