Battery Type: Li-ion , TYPE CVoltage:7.6VCapacity:32WhC21N1818-3 battery for Asus M509D M509DA 7.6V 32Wh B21N1818-1$120.00PriceQuantity*Add to CartFITS MODELAsus M509D M509DA BARND ASUSSHIPPING INFO FREE EXPRESS SHIPPINGWARRANTY 12 MONTH