When the lights go out, I'm confused I can't surf. Wifi router is dead, forgot to pack. Well, I have a solution. Step Up USB cable 5V DC to 12 AC. Just plug the USB into the Powerbank, the other end of the link is the power hole in the WiFi router. It's good, I can surf the internet even though there is a blackout

Purchase Link USB Step Up 5V DC to 12V AC
Separate Converter: http://bit.ly/2TROTMF
Converter into one with USB: http://bit.ly/2TQyCaL