18-year-old Eesha Khare has a bright future ahead of her. The California high school senior won the Young Scientist Award at the Intel International Science and Engineering Fair for her super capacitor, which can charge a cell phone battery in 20 to 30 seconds.

Khare’s device is a black, rectangular super capacitor that is just over an inch long. It is, essentially, an energy storage device that can hold an immense of energy in a small amount of volume.

The award carries with it a $50,000 prize, which Khare will use to fund her future education (she heads to Harvard this fall).

The Intel International Science and Engineering Fair is billed as the “world’s largest high school research competition”.