I think you have a faulty battery on your unit. So the unit thinks that the battery is full (because there's no current flow = battery already full), and it seems that Boomphones has a software (or hardware?) bug that makes the speaker turns om when the battery charge level reaches 100%. You may want to open the speaker with my guide and check the battery voltage, it should be between 3v and 4.2v, anything other than that indicates a faulty battery.