Ideal 6600mAh laptop battery for DELL! This DELL laptop battery using advanced cell technology and quality parts.It guarantees the stamina you need for long work sessions and travel. Manufactured to the highest quality available, with true enhanced performance, it is a good choice for you! Want more video viewing, music, photos, and games without having to plug in your AC adapter? The key is maximizing your battery life. This Smart Lithium-Ion battery works with your notebook to reduce power consumption, letting you work longer than with other types of batteries. Double your work time available without having to plug in to AC power Recharge the battery in your notebook using the AC adapter, whether the notebook is on or off.Charge up completely, even if the battery isn't fully discharged.