New positive proof of a working Newman fan motor charging a battery

[TheOne]

but if his battery was dead, and he was able to recharge it back to life, that mean its more then 100% efficiency?

[hartiberlin]

Yes, the electrical side is over 100 %,
but probably not the mechanical output versus electrical input...

So you just get also mechanical rotation energy out, but if you put in
for instance  10 Watts of electrical power from the battery into the coil,
you would probably only get 5 to 7 Watts
mechanical out... but you would get also about 5 to 20  Watts RadioFrequency power
out additionally, which will recharge your battery, so you have the mechanical output for free
additionally..

So all in all, if you tune the sparking commutator right you can get
more out than in, that is correct.

[TheOne]

where i can find this kind of magnet, i suppose old speaker will do, but i don't want broke my speaker

[Nali2001]

You can get them from the magnetron of a microwave oven.
See halfway down this page:
http://www.autarchex.com/projects/postmortem_magnetron/index.html

Or from old speakers indeed. But the nice thing about the magnetron is, that there are two in it. And also made of the more powerful ferrite.

Steven

[hartiberlin]

You can just also stack a few cheap cylinder or square  neodym
magnets together , bought from Ebay or here over the Google offers at the side...

Regards, Stefan.