I have the android version Yoga Book.
This thing driving me up a wall. It's only about 4 months old, out the box it would Shut down with a "Low battery" warning around 43%
Now it does this at a pathetic 79-80% mark. Will not turn back on until plugged in and "charged up" to 82% minimum.
I have tried resetting to default factory settings and even painstakingly manually downgrading from 7.1 to 6.0 via adb/fastboot thread.
I'm out of ideas, please help
I did not find the right solution from the internet.