The 9-Cell Laptop Battery 7800mAh 11.1V for Dell Studio 17 1745 1747 1749 is fully compatible with your original battery. Made with advanced technique， these batteries all meet or exceed the original battery specifications. They are manufactured for high performance using the best quality cells. Moreover， they ensure your data safety by all-round protections， including high/low temperature shut off protection， thermal runaway protection， overcharge and discharge shut off protection， and more. You can rest assured to rely on it! Don't hesitate to get one now!                                    Features             Fully compatible with your original battery<br> Designed for Dell Studio 17 1745 1747 1749<br> Meet or exceed the original battery specifications<br> Use the best quality cells to achieve high performance<br> All-round protections， including high/low temperature shut off protection， thermal runaway protection， overcharge and discharge shut off protection， and more<br> Ensure your data safety <br>                                                            Specifications             Capacity     7800mAh    <br> Battery Type     Rechargeable Li-ion Battery Pack    <br> Number of Cells     9 Cells    <br> Compatible Brand     DELL Studio 17 1745 1747 1749    <br> Voltage     11.1V    <br> Weight     17oz / 482g    <br> Dimensions     (13.38 x 1.97 x 1.77)" / (34 x 5 x 4.5)cm (L x W x H)    <br> Color     Black     <br>                                                             Package Includes            1 x Battery for DELL Studio 17 1745 1747 1749<br>