Amsahr Replacement Battery for HP F2299, zt1000, zt1100, zt1114, zt1120 ( 6 Cell, 4400 mAh ) 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, 11.1 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