amsahr Replacement Battery for Dell WW12P, Dell Inspiron DUO 1090 Tablet PC, Dell Inspiron DUO Convertible, WW12P, 9YXN1, TR2F1 (4 Cell, 29WH) - 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. 29WH, 14.8 Volts & 4 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