Amsahr Replacement Battery for ASUS X501A, X301, X301A, X301U, X401, X401A, X401U 18 Months Manufacturer Warranty, 100% Satisfaction Guaranteed. 100% Compatible Non-OEM : Lithium Ion (Li- ion) Long Life Battery: Rechargeable with No Memory Effect and Power Surge Protection. 4400 mAh, 10.8 Volts & 6 Cell Protective Retail Packaging, Each Product is Sealed with Anti-Static Shield Sleeve. Exclusive Offering of High Performance, Long Lasting, and Durable Grade A Cell Battery 18 Months Manufacturer Warranty, 100% Satisfaction Guaranteed. 100% Compatible Non-OEM : Lithium Ion (Li- ion) Long Life Battery: Rechargeable with No Memory Effect and Power Surge Protection. 4400 mAh, 10.8 Volts & 6 Cell Protective Retail Packaging, Each Product is Sealed with Anti-Static Shield Sleeve. Replacement Laptop Battery for Asus X501A Compatible Non-OEM Long Life, Li-ion Battery Rechargeable with No Memory Effect and Power Surge Protection. Exclusive Offering of High Performance, Long Lasting. Durable Grade A Cell Battery.