I tested one of the hand cranked radio - flashlight combos recently , I cranked it for 1 full minute , turned the light on and it lasted every bit of 10 seconds.

the light had about 7 led bulbs , so I just figured they didnt really want you to have a battery less light.

the radio lasted until I turned up the volume a little so that I could hear what was being said.

the unit had a compartment for batteries.


3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.