About this item ?11.25V 2600Mah?Li-ion,Black label, build-into laptop ,100% QC test by Original laptop, Supplier by EBKk ?Fast Charging of Class A Batteries?Grade A cells ensure fast charges and low power consumption,100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. ?Compatible?ASUS X540S X540L X540LA-SI302 X540SA X540SC X540LJ X540YA R540L