9 cell battery for Dell D620 D630 D631 Precision M2300 LB1 High Performance Longer Life Series Commercial Grade Laptop Batteries for Dell Precision M2300 are custom manufactured to be 100% compatible and optimized for your Dell Precision M2300 laptop. Longer Life SeriesNotebook Battery for Dell Precision M2300 utilizes high quality grade "A" cells for higher performance longer life and more reliability. Longer Life SeriesComputer Battery for Dell Precision M2300 meets and/or exceed OEM specification and will not void your original manufacturer warranty. Batteries capacity: 6600 mAh | Chemistry: Li-ion| Voltage: 11.1 Volts | Cells: 9 | wHr: 73. Fast charging. Low power consumption. Built-in protection circuit ensures both safety and stability.