The upper and lower lids of the charging case are connected by a metal shaft. To ensure smooth opening and closing of the lid, a certain reasonable gap should be left between the stator and rotor of the shaft during design. The upper lid will be within the range of the shaft gap, which is a common phenomenon in this type of product.
If you rub the charging case lid hard, there will be a slight creaking sound due to the friction between the charging case lid and the lower lid, which is a common phenomenon in this type of product. The product has undergone strict appearance and functional inspection before leaving the factory, please feel free to use it.