We tested Bluetooth speakers with expert listeners, and we concealed the identities on the speakers to reduce bias. For all twenty five speakers we tested, the average battery life was slightly under seventeen several hours. The Sony Ult Discipline 7 wins the title for best battery life (30 several https://www.bluetoothspeaker.top/wireless-bluetooth-speaker-outdoor-fm-tf-card-disk-audio-creative-subwoofer-wireless-speakers/