The latest brand from the Australian tech company LASER, the NRGVault is the portable power bank. You've carried around a portable battery to charge your phone up occasionally. Well imagine that on steroids.
This is a power unit that you can take with you (campers, caravaners, etc.) provides power and not only 12V power but a proper AC power to charge mini fridges, any kind of lights, any product that they happen to have with them and could even be used as a backup in the event of a blackout.