A good rule of thumb may be the larger the speaker, the longer the battery life. But this isn’t always legitimate, issues like far more updated Bluetooth firmware versions can enormously effect power efficiency, in addition to a large Bluetooth four.0 speaker won't past as long when you’d anticipate https://www.bluetoothspeaker.top/oem-led-bluetooths-speaker-audio-professional-bluetooths-speaker-for-party-home/