The battery onboard lasts as much as 12 hours. Not the best during the list, but ideal for a complete working day of listening �?check out the Tribit XSound Plus two if you want some thing with longer battery life for your same style of cost (though It truly https://www.bluetoothspeaker.top/rechargeable-battery-support-oem-odm-with-bt-tf-usb-function-bluetooth-speaker/