Amstron provides reliable, high performance replacement batteries for your Asus laptops. The LAS-12 is designed to be 100% manufacturer compatible with Asus OEM part numbers 90-N7V1B1000, 90N7V1B1200, A42-A1 and BPA2X. Amstron Lithium-Ion batteries provide superior performance and reliability. The LAS-12 Asus replacement battery is rigorously tested for productivity and compatibility with the Asus A2, A2000, and A2500 series notebooks . The LAS-12 is designed to meet or exceed the original battery of yourAsus laptop..