Smartphones, we love them, in fact we can't live without them. That said they do have a rather unfortunate habit of not making it through to the end of the day.
Well scientists have found a potential solution that doesn't involve carrying around a bulky portable charger, instead the battery would be your clothes.
Using nanotechnology, Professor Jayan Thomas and student Zenan Yu at the University of Central Florida have found a way to store as well as conduct energy through tiny copper wires.
How it works is by creating essentially a copper-based supercapacitor which can then store the energy needed to say, charge a smartphone or power a laptop.
Where things get really interesting though is that Thomas believes the technology is completely transferrable allowing you to store energy using fibres created by nanostructures.
This, combined with a conventional connector could let you charge your iPhone simply by plugging it into your jumper or coat.
If you're curious to find out more about the science you can read Thomas' full paper here explaining how they created their own wearable battery.