Batterymarket New Laptop Battery for Asus X550 A41-X550A A450 X450 series - 18 Months Warranty [Li-ion 4-cell 2600mAh] Battery Type: Li-ion, Cells: 4-cell,Capacity: 2600mAh; Voltage: 14.8V. Replace part number:A41-X550A,A41-X550 Compatible models:Asus X450 X452 X550 X500 X550A X550C X550B X550D X550CA X550CC A450 P550 F550 K550 R510 A450C A550C Series notebook 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery 12Months warranty , 30Days money retum guarantee