Bay Valley Parts 9 Cell 11.1V 7800mAh New Replacement Laptop Battery for HP:Probook 4330s,Probook 4331s,Probook 4430s,Probook 4431s,Probook 4435s,Probook 4436s,Probook 4530s,Probook 4535s Battery Type: 9 Cells Li-ion Capacity: 11.1V 7800mAh Color: Black Weight: 19oz 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 Probook 4330s Probook 4430s Probook 4530s ProBook 4730s This product is CE & RoHS certified, so BUY WITH CONFIDENCE!!!