[n] a device that supplies electrical energy [n] someone who imparts energy and vitality and spirit to other people
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animator, energiser, energiser, vitaliser, vitalizer
actor, device, doer, worker
abettor, activator, actuator, animator, arouser, cajoler, coax, coaxer, encourager, firer, gadfly, galvanizer, human dynamo, impeller, inducer, inspirer, life, motivating force, motive power, mover, moving spirit, persuader, pleader, prime mover, prompter
\En"er*gi`zer\, n. One who, or that which, gives energy, or acts in producing an effect.