Fatima Al Kaabi, who has already invented a printer for the visually impaired, developed the solar bag after a visit to a desert with her family where she could not charge her cell phone.
The solar bag can charge electronic devices, power lights and a fan for trekkers in remote areas, Gulf News reported.
Fatima, a student of Sharjah British School, is one of the youngest Emirati girl innovators, the report said.
She was the first-place winner in the Robot Olympics in UAE and invented a printer for the visually impaired.
Her other inventions include a photographer robot, cheerleader robot and an electronic belt for the hearing impaired.