It will past around 24 hrs in standby mode, listening for voice commands. And when you turn it each of the way off for storage, travel, or battery discounts, it will last per month or maybe more. The Sonos Roam is the only speaker we tested that's set up https://www.bluetoothspeaker.top/home-theater-subwoofer-usb-wireless-inalambrico-bluetooths-speaker-stereo-tws-aux/