Battery is still sealed. The LDE277-AP Replacement Notebook Battery for Dell is a high-quality Li-Ion battery designed specifically for Dell laptops. With a voltage of 11.1V and a capacity of 4400mAh, this battery provides long-lasting power for your device. The sleek black design and compatibility with the Dell Inspiron make it a reliable choice for keeping your laptop charged and ready for use. Made in China, this battery is a durable and efficient option for powering your Dell notebook.