... to various machines with different voltages(such as AC 220V, dc 12V, 9V,6V).instructionput the red switch to ON before ... indicates under voltagewhen the LED light green, it indicates DC 12 V output normally.specificationthe charging current scope(5A-10A)Battery:12V ... for the electrical < 50W.Have the protect functions for the output overload, input short circuithave the protect functions for the high ...