I'm absolutely certain this is possible eventually, and we will probably see it in 50-100 years. It's just too convenient to not research and find a way. Though battery technology or power source technology might improve so much that we won't need to worry about it. For example, if you have a battery that can last for 5 years, why bother looking for a way to send the device power. Or if you have little mini-fusion reactors the size of a watch battery that can power a device for centuries, you won't have to worry about conducting power.

But I'm a bit of a technological optimist, and I kind of think anything will be possible eventually (even if eventually means 10,000 years from now), including faster-than-light travel, teleportation, and immortality.