Why is there a difference in power level or battery life between the left and right earphones of the Xiaomi OpenWear Stereo?

The Xiaomi OpenWear Stereo is divided into master and slave roles during use. The power consumption of the master or slave earphones is different in different working states. The power consumption of the master earphone is greater than that of the slave earphone. Long-term use will cause differences in the power display. It is normal for the battery life to be different.
Note:
If you are used to wearing one earphone and charging the other earphone in the case, the power of the left and right earphones are different when both earphones are used. It is recommended that left and right earphones are worn in the same way to make sure the power levels between the left and right earphones are the same.