Afterwards the battery capacity will drop to 80% of its initial capacity. Under normal usage conditions and in ambient temperatures (25℃), the Li-ion battery is expected to discharge and recharge normally for 300 cycles (or about one year). The life of a Li-ion battery is approximately between 300-500 cycles.Due to the chemical properties of Lithium ions, battery capacity decreases gradually with use over time.More ASUS Battery Information Center Last Update : 9
