PowerSmart 6600MAH 9 Cell Laptop Battery for Toshiba Portege R835-P50X, R835-P55X, R835-P56X, R835-P70, R835-P75, R835-P81, R835-P83, R835-P84, R835-P86, R835-ST3N01 Laptop - Premium Grade A 9 cell Li-ion Battery Remarks: Please note that this is a 9-cell battery, with higher capacity and longer runtime, and its size is bigger than the original one. Fitting this battery to your laptop would raise the bottom of the laptop a bit. However, it would result in tilting the keyboard to a more comfortable angle and giving more room for ventilation. When using your laptop in car, the bulging part allowing more air flow would ease the burn up feel of your thighs. Remarks: Please note that this is a 9-cell battery, with higher capacity and longer runtime; and its size is bigger than the original one, with a small portion protruding beyond the cover hinge of the laptop after fitting to laptop. Compatible Part Numbers: PA3831U-1BRS, PA3832U-1BRS, PA3833U-1BRS, PA3929U-1BRS, PA3930U-1BRS, PABAS235, PABAS236, PABAS249, PABAS250, PABAS265 || Battery Type: Lithium-ion (Li-ion) Voltage: 10.80V Capacity: 6600mAh Color: Black Dimension: 226.08 x 43.50 x 36.70 mm ||Rate: 71.00 Wh No. of cell: 9 Weight: 492.40 g || Product Type: Replacement Battery (Brand New) Condition: New, 1 year warranty! Remarks: This item is an extended capacity 9 cell battery. Please ensure the product(s) that you are going to buy fits the brand, model, part number and dimension (mentioned above) of your device.