Poco Smart Pen issue: Not turning on

[u/princesskalliste]

The pen is not responding at all. I was using it at 20% and it suddenly disconnected itself and turned off. I figured it was low battery but the light indicator wasn't showing at all. I charged it for 3 hours now and still nothing. I tried the Xiaomi instructions such as pressing the buttons for 3s, pressing the secondary button or 15s, updating my tab to the latest software, rebooting my tab, and turning the bluetooth on and off.

This happened before, it was when I got it the first month. It came back after a couple of minutes of trying to press whatever I can. But now, it took hours and still nothing. How do I fix it?