AN 18-year-old girl has invented a super-capacitor that could one day charge your phone in less than 20 seconds.

And she has just been awarded $50,000 for her discovery.

Eesha Khare, from California, was awarded the Young Scientist Award by the Intel Foundation after developing tiny device that fits inside mobile phone batteries, allowing them to charge within 20-30 seconds.

The device can last up to 10,000 charge-recharge cycles. (Rechargable batteries can only be recharged about 1000 times).

Unfortunately the gadget has so far only been tested on an LED light, but the good news is it worked just as it was supposed to, meaning it has a good chances of working succesfully in other devices, like your mobile phone, too.

Khare told NBC that she was inspired to create a practical solution after growing frustrated that her mobile phone battery kept dying.

So, on a scale of one to incompetent how inferior do you feel right now?