Bay Valley Parts 6 Cell 10.8V 5200mAh New Replacement Laptop Battery for HP:Probook 4330s,Probook 4331s,Probook 4430s,Probook 4431s,Probook 4435s,Probook 4436s,Probook 4530s,Probook 4535s Battery Type: 6 Cells Li-ion Capacity: 10.8V 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 HP This product is CE & RoHS certified, so BUY WITH CONFIDENCE!!!