External battery extra, very massive, steel. It comes with a multi-voltage transformer, a French food, and 10 outlets for laptops, including Sony, Acer, Asus, Samsung, Dell, HP, and Levono. There are also two USB ports. There is a charge indicator and discharge with 25% increments, 50%, 75% and 100%. The battery needs to be charged 8am. ATTENTION, not charging Apple computers.