A teenager invented a device that can charge phones instantly. The device is so small it can fit in a cellphone battery.

The 18-year-old inventor says the device can hold a charge ten times longer than a regular battery. She also explained that it can fully charge a cellphone in 30 seconds. Google has already expressed interest in her.

Eesha Khare, the super-capacitor inventor, won $50,000. Published reports say the cash prize will help pay for her Harvard education. She starts classes at Harvard in the fall.

According to the Intel news release for the the Intel International Science and Engineering Fair: “Eesha Khare, 18, of Saratoga, Calif. received the Intel Foundation Young Scientist Award of $50,000. With the rapid adoption of portable electronics, Eesha recognized the crucial need for energy-efficient storage devices. She developed a tiny device that fits inside cell phone batteries, allowing them to fully charge within 20-30 seconds. Eesha’s invention also has potential applications for car batteries.”

The device tied for second place at the Intel International Science and Engineering Fair this year. The tiny charger tied with a space simulation that could teach astrophysicists new things about dark matter. The first place prize went to an artificial intelligence for a self-driving car. Intel said the annual science fair featured more than 1,600 young scientists and inventors from 433 affiliated fairs in over 70 countries, regions and territories.

According to published reports describing the new energy source, the device is compact. It is small enough to fit inside a cellphone battery. It is also flexible enough to be incorporated into developing technologies such as roll-up devices. Intel said that the device might even be used in car batteries.