Gives the Ultimate Ears Wonderboom 1 battery check routine, and also, how to know if the battery life is shortening over time. Ultimate Ears Wonderboom 1 Battery Check: Step by Step 1. First, Turn ON the Ultimate Ears Wonderboom 1 You won’t be able to read battery charge status unless the speaker is ON. To … Continue reading Ultimate Ears Wonderboom 1 Battery Check