Thank you all for your answers. Well, in my case I am not thinking in a total blackout, I live in a place where the electrical supply was made 80 years ago and for half of the population that is getting that electricity today (and with the nowadays demands, with air conditioning devices, electrical water heaters,…), so it usually falls due to high demand or just to manteinance, as to keep using the same station for, I don’t know, 5x the demand that was made for? (and the way the town was built becomes impossible to build a new station and divide) makes outages quite often in my neighborhood, but not on the outside, where the 4g antennas are. 95% of the time would be connected to the router through the LAN connection, it is only that I work from home and that 5% is important for me. Also security would be connected, so in case I don’t have power supply I would like to keep the whole system working. As you may notice, I have been thinking a lot about this, I am looking for a router that can make that connection income switch automatically, and if possible, with the lowest intake, so in case the supply is off for hours (last time was around 9 hours) the router lasts on as much as possible. I also considered Shadow as limbot suggested, I thought the intake was the same, that makes it even more interesting :thinking: