The DC-DC converter allows me to use the wifi booster without the need for AC power. It will work off the RV battery bank instead. It will save energy compared to using an inverter.
I tap into a 12-volt circuit in behind the refrigerator, mount the DC-DC converter and install an on/off switch.
Vorcool DC/DC Converter Regulator 12v Step up to 24v 3a 72w
Link to product shown in video – http://amzn.to/2jm0PVM (Affiliate link)