... panel charge rechargeable battery and rechargeable battery supplies power to LED,CCFL,earphone jack,siren and AM/FM radio. AC dynamo charger: Winding the dynamo crank can charge ... power to LED,CCFL,earphone jack,siren and AM/FM radio. Dry batteries supply power to LED,CCFL,earphone jack,siren and AM/FM radio. Power standing time of dynamo charger