Bay Valley PartsReplacement Battery for Dell Vostro 3400, 3400n,3450,3500, 3500n, 3700, 3700n Battery Type: 6 Cells Li-ion Capacity: 11.1V 5200mAh Color: Black 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 This product is CE & RoHS certified, so BUY WITH CONFIDENCE!!!