“Have You Tried Turning It Off And On Again?” – Roy.
I recently purchased a Lenovo X1 Extreme Gen 3 laptop, which I normally use on a charger – at least for the majority of the time. I recently needed to use it a few times without a charger, only to realise the second time that the battery level was down to 30% despite it being plugged in between uses. It turns out that it had decided to stop charging the battery despite being plugged into the charger. It was interesting though, as the laptop was registering that it the charger was plugged in – which was stopping the battery level from dropping further – but it was not charging. The Lenovo Vantage app and Windows both reported a healthy battery and the right wattage on the charger, but no charge activity.
I powered the laptop off and on; I tried a different charger; I tried a different OS (I have dual boot setup). None of these attempts made improved the situation. What did fix the issue however, was rebooting, opening the system/BIOS settings, and then disabling the battery. With the battery disabled, the system will then power off (the setting is designed for you to perform maintenance on the laptop). Once the laptop and battery were off, I removed the charger for a few seconds, and then plugged the charger back in and turned the laptop on. After that, it was back to charging as normal.
No idea for the moment what the issue was, but at least there’s a way to get it back to normal again.