Neat, volts don't matter though, you can have 10 billion volts and it wont shock you any more than 650k.
Amperage is what you need to look at. Even a small amount of volts can kill you if the amps are high enough.
Actually, P=V*A, so you need both amperage and voltage to kill. A high voltage is preferred over high amperage because resistance increases with amperage. Voltage also allows the current to better transfer high resistance materials like skin.