The Omnicharge is expensive... It's also one of the most versatile power banks / battery packs I've ever seen. It comes with a wide variety of adapters to charge any device and even features Qi wireless charging. Will this be your next battery?
This looks like a good battery powered chargers for users who don't have reliable power at home and go outside a lot where an empty power outlet could be hard to find.
This battery can be useful for the Nintendo Switch, or a similar handheld with a bigger screen. A large external battery will come in handy since users only need a charging cable, and this battery to charge a Switch anywhere until the power on the external battery is all used up. This battery can come in handy for long boss fight or levels without using a charger with a long charging cable to connect the Switch to a empty power outlet.
If you do a lot of work on your laptop like video editing, having an extra battery is useful since you can't charge your laptop if there is a power outage, or when you are not in a place like a home, library, school, and work which let users borrow electricity to charge their laptop and gear.