Ready: capacitors are fully charged, no failures detected. Charging: capacitors are being charged Buffering: capacitors are being discharged In normal mode (and also in charging mode), the output voltage is slightly lower as the input voltage. The output voltage follows the input voltage reduced by the input to output. The output section of the DC-UPS is fully controlled and is equipped with an electronic current limitation. A current overloading of the. During charging, the DC-UPS consumes additional current from the input. Refer to Input on page 11. When charging is completed, the Ready status indicator stops updating and is on solid and the Ready relay contact closes. Initial charging means that no input.