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self-powered
self-powered adj.
Brit. 
/ˌsɛlfˈpaʊəd/
, /ˌsɛlfˈpaʊəd/U.S. /ˌsɛlfˈpaʊ(ə)rd/
†(a) having power oneself (obsolete rare); (b) powered by itself; requiring no external source of power, esp. for propulsion./ˌsɛlfˈpaʊ(ə)rd/ΚΠ
1694 W. Cross Expos. 2nd Verse 4th Chapter Epist. Romans 55 He [sc. Man] Excells other Earthly Creatures,..Lord of his own Actions, a Self-powered Creature, or as Cicero says, a Power of Living as he will.
1836 J. H. Ingraham Lafitte I. ii. 74 The penetrating, self-powered gaze of the pirate rested..full upon his features.
1906 Dubuque (Iowa) Daily Times 22 Apr. 10/4 The self-powered [railway] cars enjoy two advantages... (a) Absence of external power transmission circuits.
1961 Sci. Newslet. 11 Mar. 160/1 Self-powered radio..needs no batteries or electricity.
2013 A. Rutherford Creation: Origin of Life i. 12 What we now loosely call ‘protists’: single-celled creatures that include self-powered swimmers, and algae.
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