Solar mobile charger Solar energy board: 5.5v/80ma High capacity build ing ni-mh battery: 1350mah Output voltage: 5.0~6.0v Output current: 350~800ma Charging time: about 60 minutes(the time is a little different for different mobile phone) To charge the build in battery in the charger using solar energy: 10~15 hours. To charge the build in battery in the charger using computer or ac adapter: about 4.5 hours.