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-Ion Device Voltage: 10.8V Capacity: 4400mAh / 48Wh Warranty: 1 Year This battery is not compatible with the following HP Pavilion models: Pavilion dv4-4000 Series and up Pavilion dv5-2000 Series and up Pavilion dv6-3000 Series and up Compatible Models and Original Battery Part Number: Compaq Presario CQ40, CQ41, CQ45, CQ50, CQ60, CQ61, CQ70, CQ71, 462889-121, 462889-122, 462889-141, 462889-142, 462889-143 ** In prevent from purchasing incorrect battery, please compare with your original battery & check the Compatibility at [Specs] below.