amsahr Replacement Battery for ASUS S300, S400, S400C, S400CA, S400E, C21-X402, C21-X402 (6 Cell, 44WH) - Includes Cleaning Cloth Includes Soft Nonporous Microfiber Cleaning Cloth 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. 4000 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