the lamps are indeed economical and environmental friendly. Despite being charged By free solar energy some lamps can be charged with AC power or DC power from the car cigarette lighter. Once charged you can use the lantern for lighting as well as charging your mobile phone and powering your small radio.
Solar lanterns are very handy and portable. They give intense light that can be used reading and lighting purpose in homes, schools, camping, field offices and many other palaces. When compared to kerosene lamps which are used in most in parts of Africa,
LANTERNS