DR. BATTERY Professional Series Replacement Notebook Battery: Dr. Battery Professional Series battery is made of quality materials, top grade battery cells to bring your laptop back to life and maintain your laptop service time. Safety First Criteria: All of Dr. Battery Professional Series batteries have short circuit, overheat, and overload protections to maintain the safety of usage. Condition: New Cell Type: Lithium Polymer Device Voltage: 11.4V Capacity: 4912mAh / 56Wh Warranty: 1 Year Compatible Models and Original Battery Part Number: Dell Precision 15: 5540, 5520, 5530, M5510, M5520, Dell XPS 15: 2017 9560, 15 9560, 15 9570, 15-9570, 05041C, 5D91C, 6GTPY, CP6DF, H5H20 ** In prevent from purchasing incorrect battery, please compare with your original battery & check the Compatibility at [Specs] below.