Bay Valley Parts 9-Cell 11.1V 7800mAh New Replacement Laptop Battery for COMPAQ: Compaq 320,Compaq 321,Compaq 325,Compaq 326,Compaq 420,Compaq 421,Compaq 425,Compaq 525,Compaq 620,Compaq 621 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 HP This product is CE & RoHS certified, so BUY WITH CONFIDENCE!!!