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: 14.8V Capacity: 2200mAh / 33Wh Warranty: 1 Year This battery is only compatible with 14.4V and 14.8V. Compatible Models and Original Battery Part Number: 728248-121 728248-141 728248-221 728248-241 728248-251 728248-541 728248-851 728249-241 728249-541 728348-141 728460-001 728461-001 751906-121 ** In prevent from purchasing incorrect battery, please compare with your original battery & check the Compatibility at [Specs] below.