TAUPO New Laptop Battery Replacement for Dell XPS M1330, Dell Inspiron 13, 1318, fits P/N PU556 NT349 [49Wh, 6-Cell] - 12 Months Warranty Battery type: 6-cell; Capacity: 49Wh; Voltage: 11.1V Color: Black 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 All products are CE-/FCC-/RoHS-Certified by reputable, qualified and accredited testing laboratories. Strict guidelines for compatibility, 12-months hassle-free warranty