Is Cranking Speed or Duration More Effective for Charging a Hand-Cranked Radio?

[snoggerT]

hand cranked radio question (ignore - figured out)

Your two friends argued whether they should crank more cycles (e.g. 180 cycles in 1 minute) or longer time (e.g. 180 cycles in 2 minutes) to efficiently charge the internal batteries. They couldn't conclude with their knowledge and decided to ask you about this. What would be your professional opinion?

The Attempt at a Solution

I'm not really sure on this one. It seems like speed would be a factor, but I'm not sure if the generator is only reliant on the number of turns. Can someone please help?

 

[skeptic2]

They don't specify the type of battery but I'm assuming they aren't lead acid batteries. What do you know about recharging currents of non-lead acid batteries?

 

[Mene]

my professional opinion would be that it is not only the number of turns that determines the efficiency of charging the internal batteries, but also the speed at which those turns are cranked. In this scenario, it would be best to find a balance between the two - not too fast or too slow - to achieve the most efficient charging. Additionally, the design and efficiency of the generator itself would also play a role in the charging process. It would be beneficial to conduct experiments and gather data to determine the optimal speed and number of turns for the specific hand cranked radio in question.