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: 14.8V Capacity: 4000mAh / 59Wh Warranty: 1 Year This battery is not compatible with the Alienware M14xR3, M14xR4. Compatible Battery Part Number: 0DKK25 0PT6V8 0T7YJR 312-0984 8P6X6 999T2086F DKK25 KR08P6X6 P06T PT6V8 T7YJ T7YJR ** In prevent from purchasing incorrect battery, please compare with your original battery & check the Compatibility at [Specs] below.