xiaom air 13 laptop battery calibration?

Question

laptops

It is on a xiaomi air 13 Ubuntu 18 laptop. About a couple of weeks ago, it glitched and stopped discharging, in the evening, out of 100 percent of the charge, not even one decreased, that is, it was 100 all the time. Then somehow it went away .. After that it became noticeable faster the laptop is discharged, as I understand it, the calibration has gone astray? The laptop is 1 year and a couple of months old. I found on the Internet a way to calibrate through the BIOS, you go into the BIOS at half charge, charge up to 100 and then let it discharge in the BIOS until it turns off. Has anyone tried this method? And are there any other options?

Answer 1

Batteries are usually calibrated via the I2C interface through a special programmer. All these "methods" with slow discharge in the BIOS are based on the calculation that the controller in the battery will come to its senses and recalculate the capacity on its own. But how would he do this with each charge / discharge