Hand Crank
Hand Crank
if i hook up a generator dc motor (maybe from a hand crank flashlight and then hook it up to some rechargble?
rechargble batteries will it charge the batteries?
Yes it will work.
You need to put a blocking diode between the motor and the battery so the battery doesn't just start running the motor! If your charging just one NiCD or NiMH cell (1.2V) it should work pretty good. Any higher voltage and you will really have to get the rpms up on the motor with gearing etc. to produce enough voltage.
Don't try to charge bare lithium batteries though. They have a nasty habit of exploding in spectacular fashion they are over charged (don't ask how I know). They also have failure modes when they are over discharged.
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Hand Crank
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