The AJP Li-Ion battery is compatible with Dell GP952, GW252, and G399N batteries for use in Dell 1525/1526 laptops. With a battery capacity of 4400mAh and a voltage of 11.1V, this black battery is designed for the Dell Precision 3520 and Latitude product lines. Manufactured in China, this unit is a reliable replacement for your laptop battery, ensuring extended usage and performance.