I have battery for laptops Dell Inspiron 13 7378 used in good proven state 100% functional time that maintains the charge approximately 1 and 1/2 hour to 2 hours, also compatible with Inspiron 13 5378, Inspiron 13 7378, Inspiron 15 5578, Inspiron 15 7579, Inspiron 17 7779, Dell Inspiron 15 5567, 5568, Dell Inspiron 13 5368 Ship available anywhere in the country.