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 Compatible Models and Original Battery Part Number:0B110-00300000, A32N1405, A32NI405, N551JB, N551JK, N551JM, N551JQ, N551JX, N551ZU, N751JK, N751JX, G551JW, G551JX, G551VW, G771, G771JW, GL551JK ** In prevent from purchasing incorrect battery, please compare with your original battery & check the Compatibility at [Specs] below.