Subject: Is Perpetual Motion possible? If not, why?

I have been experimenting over a device that I have designed and built for 
perpetual motion.Keeping in mind that energy cannot be created or 
destroyed.The energy input and discharge is the same.Upon replacing the 
source of energy with the output the machine runs for a few seconds then 
stalls.It's probably due to fiction between particles and against air.If I 
could setup an environment without these problems would this device be 
considered as a Perpetual Motion Machine? Also,please note that I have 
done considerable research on this topic and know that this is forbidden 
by the 1st and 2nd laws of thermodynamics.The device that I have built 
consists of an electric motor and generator(DC current),Batteries(to start 
the process)and other wires etc.

Thanks

Re: Is Perpetual Motion possible? If not, why?