I couldn’t see the battery levels of my Bluetooth devices either. My headphones and mouse could run out of power at any moment, and there’s no way to predict it. Windows is supposed to be able to show the battery levels, but in practice, it’s hit or miss. Sometimes the data is out of date, and sometimes it’s not there at all. I started looking for a solution and stumbled upon https://workstation-master.com/bluetooth-battery-level.html I decided to give it a try—and I’m glad I did. After installing it, everything became much easier. Now the battery level is displayed constantly, plus there are notifications. It’s especially convenient that everything is visible right in the taskbar. Since then, I haven’t experienced any unexpected shutdowns at all. If anyone else has the same problem, I recommend giving it a try.