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: 3600mAh / 41Wh Warranty: 1 Year Compatible Models and Original Battery Part Number: 451-BBZL, DJ1J0, ONFOH, PGFX4, Dell Latitude 12: 7000, 7240, 7280, 7480, Dell Latitude 13 7000, Dell Latitude 14: 7000, 7440 ** In prevent from purchasing incorrect battery, please compare with your original battery & check the Compatibility at [Specs] below.