I'm planning on connecting an elliptical trainer to an AC motor in order to charge some batteries and use the energy later. So I found an old 300 W juicer which I disassembled. Then I connected the bars to a multimeter and a drilling machine to the shaft.
So when I measure the voltage with the drilling machine on (at maximum power), I get maximum 1.8 V (see picture).
This is a very disappointing value for me, as I expected more...How much more? I don't know, but definitely not such a low, useless value.
The voltage of the drilling machine battery is 14.4V and the energy is 21.6Wh. Not sure if this has any relevance.
Can anyone help me to understand why do I get such a low voltage from a 300W motor? And if it is normal, why is it so low and what to do to increase it, considering that I want to connect it to the elliptical trainer.