DELL OEM 68 WHr 4-Cell Primary Lithium-Ion Battery 451BBZG *NNB* MPN: 451BBZG   Battery Information Application/Usage: Notebook Battery Rechargeable: Yes Battery Size: Proprietary Battery Size Battery Chemistry: Lithium Ion (Li-Ion) Battery Capacity: 8800 mAh Output Voltage: 7.6 V DC Miscellaneous Compatibility: Dell Precision 3520 Mobile WorkstationDell Latitude Notebook: 5280 5480 5580 5490 5590 5290