The quality or state of being independent, free. Term for battery time life. For example, a diesel generator has a known limited autonomy as it needs to be refuelled every 10 to 12 hours, being able to operate independently of national grid power and thereby maintain continuous power, adept power. You can choose, Riello UPS Power Supplies. Eaton UPS Power Supplies. AEC UPS power supplies, all from PowerContinuity. T2000 UPS is one of our best sellers.