The Dell Latitude D820 Battery is a high-performance Lithium-ion power source designed to keep your Dell Latitude D820 and compatible models running efficiently. Available in 6-cell or 9-cell configurations, it offers a capacity of 56Wh or 85Wh for extended use, providing 3-5 hours of runtime depending on usage. Engineered with overcharge, over-discharge, and short circuit protection, this lightweight and durable battery ensures safe and reliable power for your device, making it an ideal replacement or spare for on-the-go professionals.