For us, the speakers that impressed us the most with its battery life were being Bose, Ultimate Ears, and Turtlebox. In addition, you want to take into consideration how the battery holds power around time. Will the hours slowly dwindle down after a 12 months of use? Two years? https://www.bluetoothspeaker.top/professional-manufacturer-inalambrico-bluetooth-speaker-for-mobile-phone/