A good general guideline is definitely the larger the speaker, the longer the battery life. But this isn’t always correct, issues like more updated Bluetooth firmware versions can enormously effect power performance, as well as a large Bluetooth 4.0 speaker won't last as long while you’d anticipate relative to https://www.bluetoothspeaker.top/hot-selling-rgb-bluetooth-speaker-led-gift-outdoor-subwoofer-speaker/