SterlingTek's POWWER 85 WHr 9-Cell 7200 mAH Lithium-Ion Battery for Dell Inspiron 9300 Laptop Brand New 9 Cell, 85whr ULTRA High Capacity Replacement Lithium-Ion rechargeable Battery This is an ULTRA Hi Capacity 7200mAh battery,100% OEM Compatible Meet or exceed OEM specs. High grade quality CE Safety Certification; Volts: 11.1v Chemistry: 9-cell Li-Ion Did You Know? The mAh rating of a battery indicates how "big the gas tank" of a battery is. The higher the mAh rating is the more power that a battery will store & last longer.