Bay Valley Parts 4-Cell 14.8V 2800mAh New Replacement Laptop Battery for HP:ProBook 5310m,ProBook 5320m Battery Type: 4 Cells Li-ion Capacity: 14.8V 2800mAh Color: black Weight: 9oz 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 HP:ProBook 5310m,ProBook 5320m This product is CE & RoHS certified, so BUY WITH CONFIDENCE!!!