This 9-Cell Smart Lithium-Ion Primary Battery has internal circuit board with chips that allow it to communicate with the notebook to monitor battery performance, output voltage and temperature. It also gives the notebook much more accurate 'fuel gauge' capability to determine how much battery runtime is left before the next recharge is required. This product has been tested and validated on Dell systems to ensure it will work with your computer and is compatible with Dell Inspiron notebooks. ....read more