I just checked out my router, and it’s 12v (and only 2.5 amps) So you wouldn’t need an inverter, just a DC to DC cable, and something like something like a laptop power bank should do it. (Assuming there is nothing special about routers. Electronics are weird. People had problems with electric toothbrushes in campervans, not because there wasn’t enough power, but because the power wave form wasn’t smooth enough, or something. I don’t understand it at all)
I really want to keep my router on, because we have no mobile signal here at all. Literally nothing. we don’t have live tv or even a working landline. In an emergency, we’d have to run to a neighbour!
The ecoflow river mini would run a router for 15 hours, or an electric throw for 1 and a half hours, or charge a MacBook Air three times or run a 400w blender for half an hour (I am crossing my fingers it would also run a 300w Tassimo for a minute or two!) or a CPAP machine for 4 hours. Or some combination (not all of them obviously) As power cuts are expected to be short, I think that would probably cover it for most people. It’s £300. A small gas camping stove is about £30 to heat up pasta or hot water for tea or hot water bottles and a camping gas heater for £60 would mean it was comfortable, especially if you can safely light a few candles for background heat.
The main problem is that the river would have to physically sit by the router. Which is a long way from all the other stuff. So I’m inclined to get a small UPS for the router (which seems to be about £50-100) and truck the river around for power (it’s not very big). I was planning to get one anyway for camping. If I ever get a start date for my job, or my house sale goes though, I’ll be on it like a shot.
I’ve got all the random camping lights, head torches, kindles, power banks and so on together in a basket and plugged them in behind the tv. I’ve fetched the camp stove in the from garage and made sure there’s a spare gas canister. Ive found the candles, and filed the lighter. I’ve already got all the blankets and thick socks out. Without spending money I don’t have on things that will probably have sold in out by the time I can afford them, I’ve done all I can.