Bay Valley Parts 9-Cell Extended 11.1V 7800mAh New Replacement Laptop Battery for HP 671567-421,671567-421,671567-831,671567-831,671567-831,671731-001,671731-001,672326-421,H2L55AA Battery Specs: 9 Cells Li-ion Capacity: Be used for 10.8V and 11.1V 7800mAh Color: Black Weight: 19oz Battery built by highest quality materials including grade-A brand-new cells Battery meets and exceeds OEM specifications and lasts longer hours Battery package includes: One brand-new generic replacement battery for HP 671567-421,671567-421,671567-831,671567-831,671567-831,671731-001,671731-001,672326-421,H2L55AA Battery offered in this listing is CE & RoHS certified, so you can shop with a peace of mind.