Works wonderfully, but after some time, it turns off by itself (Bluetooth connection)

[ssj4maiko]

I installed on my raspberry pi, worked flawlessly, was playing a game as a test on Steam Link, and then, after a good amount of time (I have not clocked it, but I would give at least 10 minutes, it suddenly turned off.

Then I turned it back on, it went back to normal, played some more, and after a similar amount of time, again it turned off out of nowhere. I'm not sure if it's normal, the batteries were full from the start, it's certainly not that, as it still works for some good time when I turn it back on, and it's not like I'm not pressing buttons all the time for it to think it needs to sleep or something.

I mostly wanted to know if this is normal or something.

[Deleted user]

Were there any errors in the log?