For us, the speakers that amazed us the most with its battery life ended up Bose, Ultimate Ears, and Turtlebox. Additionally you want to consider how the battery holds power over time. Will the several hours slowly dwindle down after a 12 months of use? Two years? �?You want https://www.bluetoothspeaker.top/bt-speaker-usb-rechargeable-speakers-support-aux-tf-subwoofer-loudspeaker/