How do i make a wind or bike generator?

Lil J

New member
I got many ideas and I have no problem getting a simple generator but the idea of the battery bank puzzels me if i make a wind generator the voltage changes with the speed of the wind now if i want to charge 1.5 volt batterys then i need a steady 1.5 volts correct? how do i make it so iget a steady 1.5
the 1.5 volt thing was a example not my actual idea any other tips are appericiated
 
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