The 9JRV0 53XP7 053XP7 Laptop Battery Replacement is specifically designed for Dell Latitude 5521 and 5531 laptops. This rechargeable battery has a capacity of 8071.0 mAh and comes with 4 lithium ion cells. It has a voltage of 11.4 and weighs 1.04 pounds. The package includes one battery and is compatible with the Dell Latitude product line. This high-quality and reliable battery replacement ensures your laptop stays powered up and ready for use.