Bay Valley PartsNew Extended Replacement Battery for computer models: HP Envy 14 Series Envy 15 Series Compatible with HP HSTNN-LB4N HSTNN-YB4N HSTNN-LB4O 12 month Warranty Battery type: Li-ion Replacement battery 9cell 10.8V 7800mah Black The item(s) will be shipped from US. This product comes with 30-Day Money Back Guarantee,has 1-Year warranty.The Batteries are in high grade quality and certified by CE and RoHS. Package Includes:One unit of brand-new replacement battery for : HP Envy 14 Series Envy 14 Series Envy 14 Touch Series Envy 14t Series Envy 14z Series Envy 15 Series Envy 15 Series CE&RoHS Certificates for safety.