A good rule of thumb is the larger the speaker, the longer the battery life. But this isn’t always correct, factors like a lot more updated Bluetooth firmware versions can significantly affect power effectiveness, plus a large Bluetooth four.0 speaker may not very last as long while you’d expect https://www.bluetoothspeaker.top/wireless-bluetooth-speaker-outdoor-plug-in-card-dual-speaker-subwoofer-home-radio/