In one aspect of the invention, a system comprising a needle-free injector is disclosed. The system comprises a needle-free injector comprising a trigger assembly adapted to exert an injection force, the trigger assembly comprising a spring storing the injection force. The system also comprises a winding mechanism for priming the spring for the storing of the injection force, wherein the winding mechanism is electrically powered. According to another aspect of the present invention, an alternate needle-free injector system is disclosed. The system comprises a needle-free injector comprising a nozzle adapted to be loaded with an injectable. The system also comprises a dosing mechanism for loading the injectable into the nozzle, wherein the dosing mechanism is electrically powered.
