But even if you have a charging cable with you, what do you do if there isn t a power outlet nearby?
The good folks behind new Kickstarter campaign HandEnergy have a solution.
They ve developed what looks a bit like a Poké Ball, but is in fact a spherical pocket electricity generator that lets users charge anything from their smartphone and tablet to their camera and flashlight using nothing more than the power of their own bodies.
You may be familiar with the wrist-training device called the Powerball, which is a powerful handheld gyroscope, co-founder Alex Novik told Digital Trends.
We came up with the idea of putting a battery, metal coil and magnets inside a similar device for generating electricity.
We spent a year developing it, trying to find the best materials we could.