11.4V, 4300mAh, Li-Polymer Battery fits Hp, Envy 15-c101dx, Envy X2 15, 49.02WhBattery Fits Models: Envy 15 c101dx, Envy X2 15, Envy X2 15 c, Envy X2 15 c000, Envy X2 15 c000na, Envy X2 15 c000nd, Envy X2 15 c000ng, Envy X2 15 c000no, Envy X2 15 c001, Envy X2 15 c001dx, Envy X2 15 c001nf, Envy X2 15 c001ns, Envy X2 15 c001tu, Envy X2 15 c010ng, Envy X2 15 c010nia, Envy X2 15 c011, Envy X2 15 c011dx, Envy X2 15 c011nw, Envy X2 15 c017la, Envy X2 15 c020nd, Envy X2 15 c020nf, Envy X2 15 c021nd, Envy X2 15 c029la, Envy X2 15