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: 2200mAh / 24Wh Warranty: 1 Year Compatible Models and Original Battery Part Number: 0B110-00440000, A31LP4Q, A31N1601, F541UA, R541UA, R541UJ, R541UV, X541SA, X541SC, X541U, X541UA, X541UV, VivoBook F541, F541UA, VivoBook Max X541NA, X541SA ** In prevent from purchasing incorrect battery, please compare with your original battery & check the Compatibility at [Specs] below.