Exxact Parts Solution&reg; DELL Compatible 9-Cell 11.1V 7800mAh EXTENDED New Replacement Laptop Battery for DELL Inspiron 15R (7520), 15R (5520) Battery Specs: 9 Cells Li-ion Capacity: 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 DELL Inspiron 15R (7520), 15R (5520) Battery offered in this listing is CE & RoHS certified, so you can shop with a peace of mind.