Gateway 6500921 replacement laptop battery by Amstron is made from the highest quality cells and parts. Amstron provides reliable, high performance replacement batteries for your Gateway laptops. The LGA-25 is designed to be 100% manufacturer compatible with Gateway OEM part numbers ACEAAHB50100001K0 and S62044L. This battery is designed for use in the Gateway M320.Amstron Power Solutions manufactures and delivers high-quality and high-performance batteries and chargers. Amstron batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility and safety to exceed original equipment manufacturer specifications.