amsahr Replacement Battery for Dell N411Z, Inspiron N311z, Vostro V131, Vostro V131D, Vostro V131R, 268X5, 312-1257, 312-1258, H2XW1, H7XW1 (6 Cell, 4400 mAh) - Includes Mini Optical Mouse Includes Mini Optical Mouse with Retractable USB cord and ONE Compatible Laptop Battery 18 Months Manufacturer Warranty, 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