Amsahr Replacement Battery for Lenovo SL410, E40, E50, 0578-47B, 05787UJ ( 6 Cell, 4400 mAh ) - Includes Stereo Earphone Includes Stereo Earphones 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, 10.8 Volts & 6 Cell Protective Retail Packaging, Each Product is Sealed with Anti-Static Shield Sleeve.