OMCreate Battery Compatible with Dell XPS M1330, Dell Inspiron 13/1318, fits P/N PU556 NT349-12 Months Warranty [Li-ion 6-Cell] All products are CE-/FCC-/RoHS-Certified by reputable, qualified and accredited testing laboratories. Strict guidelines for compatibility. Built-in circuit protection. Automatic power cut off at high electric current, voltage or temperature ensures safety and extended battery life. High quality grade "A" cells. Charges quickly. Longer discharge time. Steady output and low power consumption. More than 300 times charge-discharge cycles. Operation time: 1.5 - 3 hours. Actual operation time varies depending on types of the device and the way it is used 12-months hassle-free warranty service. Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed as following.