That's some next level thinking. A power strip that recognizes which device is plugged and manages power flow accordingly and also manages power outages.
I have an external HDD and a NAS connected to my computer. Whenever the power goes down, the computer - a notebook - "freaks out" from having lost a disc - and I, in turn, freak out of fear of losing data. Imagine if the battery power strip could signal to the computer that it should "eject" the HDD right after its battery is empty. I can't imagine the tech involved in that, tough. But 5 years I couldn't imagine a bunch of tech we have today, so it's quite possible.