Mobile Accessories, walkie talkie and equipment in the case of using them in a many uses, and as such, Battery Voltage V Diesel Cars with DC voltage 13.8 V, can be direct Connection when you are not included. DC V V to DC 13.8 V a conversion to the DC/DC Converter is required. Multiple Device, please do not the total consumption not to exceed the rated output current of each device connected to the DC – DC Converter.