[TechRally] takes advantage of this to create an automatic DC UPS with dual outputs to power a router and modem in the event of a power outage. You can see two videos about the project below.
Lost power due to a storm or electrical problems? Keep your internet connection alive by providing power with these three fixes.
[Brink] had some issues with the power supply in their apartment, so they set about whipping up a backup power solution to keep their Verizon ONT fiber modem up and running in such events.