The Dell Precision 15 3520 3530 Laptop Battery is a high-quality replacement battery designed for Dell laptops. With a voltage of 11.1V and 6 battery cells, it provides long-lasting power for your device. This Li-Ion battery is compatible with the Precision 15 3520 3530 model and is ideal for professionals who require reliable and efficient performance. Made in China, this black battery is a genuine Dell product, ensuring compatibility and quality for your laptop.