Current = power capacity 57wh/ voltage11.1v = 5.1351ah.
Cell current =5. 135 1Ah/2 and =2.5676Ah.
Therefore, the discharge capacity of a single battery cell for one hour at a current of 2.5676A, that is, 2.5676Ah=2568mAh, and the battery is marked with about 2600mAh.