Why is there a difference in battery level or battery endurance between the left and right earbuds of the REDMI Buds 6?

During use, the earbuds operate with one as the primary earbud and the other as the secondary. The primary earbud not only performs the same functions as the secondary but also handles data transmission to the secondary and connection to the phone, resulting in slightly higher power consumption. When the battery difference between the two earbuds reaches 5%, they will seamlessly switch roles to balance the power, gradually equalizing the remaining battery level of both. Therefore, a slight difference in battery level between the earbuds is normal.
In addition, if you are accustomed to wearing one earbud and charging the other earbud in the case, it is easy to cause the left and right ear battery levels to be out of sync when both earbuds are used. It is recommended to wear the left and right earbuds in the same way to confirm the difference in battery endurance between the left and right earbuds.