… continuous power and peak power. For electrical appliances, it is recommended to include a safety reserve of 20 to 50%. So if the appliance to be connected is 100 watts continuous power, the voltage converter on the boat should be able to output at least 120 to 150 watts continuous power. A DC-DC converter, also known as a DC-DC battery charger, converts the DC voltage supplied at the input into a DC voltage with a higher, lower or inverted voltage level. For use on a boat, a device could be used to convert 12 volts to 24 volts or vice versa 24 volts to 12 volts. Ask our experts for advice on suitable devices for your purposes.