Why does one REDMI Buds 6 Play earbud drain the battery faster than the other?

The left and right earbuds are designated as the primary and secondary earbuds during operation. The primary earbud performs the same functions as the secondary earbud, while also transmitting data to the secondary earbud and connecting to the phone. Therefore, the primary earbud consumes more power and drains its battery faster than the secondary earbud. When there is a significant difference in battery level between the two earbuds, the primary and secondary earbuds will seamlessly switch to balance the power, and the remaining battery levels of both earbuds will gradually converge. Therefore, a slight difference in battery level is normal.