I don't have a question, but an answer, because I am also happy for helpful tips. My Beoplay A1 is about 3 years old and at some point the sound and battery performance started to deteriorate. The bass rolled over and although I had the box connected to the charger, it switched itself off. Thanks to YouTube, I found the solution. Simply install a new battery. It has a capacity of 3400mAh and can be bought from a German manufacturer, something with a sub ;-) for about 25.00. and lo and behold, I can enjoy music at full blast again.