Controlled battery 10.8V = 4400ah replaces A32-K72 = 11.1V battery that came 4400ah replaces A32-N71 - it s "adapts to the computer and seems to work. more packaging was poorly crafted delicate it was damaged upon arrival. Fortunately, the battery is not expensive and the shipping is free I recommend the seller who is nevertheless German. There are Chinese who do better