how to I alter the plug connections to run it off a battery?

I don't know what voltage these things run off so I can't be sure wether I can give you any help but if these things are like hair clippers they run stright off the mains voltage and cannot be converted to run off a battery but you could buy a inverter that will let you run from a car battery if this sounds right do a search for battery inverters on google

jb
August 2005