Hello, New here, sorry if this in the wrong thread. I just finished a college general physics 2 course and in it we had an experiment where we passed a magnet through a coil of copper and a computer read what the induced emf was. This reminded me of a flashlight I have which uses the motion of a magnet going back and fourth to recharge two round 1.5 volts batteries, connected in series. So, I created a similar setup using a coil of copper wrapped around a pvc pipe. I use a strong cylindrical magnet to go through this. It is attached to a led which lights sporadically as I shake the pvc pipe. I read I can attach a capacitor to the circuit to smooth out the current. And to use diodes to make the current DC. Instead of light an LED I want to charge 2 1.5v rechargeable batteries I have in series. I think though that if I attach the two batteries to my coil of wire the current from the battery will create a magnet out of the coil and drain the battery, no? How would I be able to charge the batteries using the emf induced by the magnet going back and fourth through a coil of copper magnet wire? Thanks!