New Replacement Battery for Dell Latitude D820 D830 D531 D531N [Li-ion 6-cell 5200mAh Grey] Battery Type: 6 Cells Li-ion Capacity: 11.1V 5200mAh Color: Grey Weight: 13oz Using highest quality materials including grade-A brand-new cells Meets and exceeds OEM specifications and lasts longer hours Package Includes: One unit of brand-new replacement laptop battery for DELL Latitude D531, Latitude D531N, Latitude D820, Latitude D830, Precision M4300 Mobile Workstation, Precision M65 This product is CE & RoHS certified, so BUY WITH CONFIDENCE!!!