It’s common for green and brown field construction sites to have generators as their only form of power. I am sure we have all had times when the site cabins trip, or the generator fails for whatever reason, and when this happens you are left sitting there with your laptop but no broadband connection. Worst of all you can’t even brew up!
Melbek’s 4G broadband equipment can have battery backup with up to an hour of standby. Obviously, you still won’t be able to make a cup of tea; however, it will allow you to send that email or share that drawing change during a power cut, and is always there for peace of mind.