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

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The discussion centers on the effectiveness of cranking speed versus duration for charging a hand-cranked radio's internal batteries. Participants debated whether cranking more cycles in a shorter time or fewer cycles over a longer period would yield better results. There is uncertainty about the relationship between cranking speed and the generator's efficiency, particularly regarding the type of batteries used. The conversation highlights a need for clarity on how different battery types, especially non-lead acid batteries, respond to varying charging methods. Ultimately, understanding the specific battery technology is crucial for determining the most effective charging strategy.
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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?
 
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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?
 

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