Greencisco's battery chargers, industrial DC UPS, DC power systems,designed with 20 years life, MTBF: 200000 hours, are with input voltage:220VAC/230VAC/380VAC/415VAC/480VAC, output: 24V/-48V/110V/125V/220VDC/0-1000A for national grid, power substations, Oil, AC UPS,ect.