The battery onboard lasts approximately 12 several hours. Not the best in the list, but ideal for a full day of listening �?check out the Tribit XSound Plus 2 If you would like a thing with longer battery life with the same type of cost (while It is bulkier). https://www.bluetoothspeaker.top/wireless-bluetooths-speaker-portable-music-speaker-bluetooths-with-phone-holder/