The battery onboard lasts as many as 12 several hours. Not the best during the list, but great for a full day of listening �?check out the Tribit XSound Plus two If you prefer a thing with longer battery life for that same kind of cost (however it's bulkier). https://www.bluetoothspeaker.top/bluetooth-speaker-hifi-heavy-bass-wireless-soundbar-subwoof-loudspeaker/