The biggest failing of every mobile gadget is the battery. We want our gadgets to do more, longer and faster, but battery technology can't keep up. That's why you might need to plug in your gadget before you get even a full day of use out of it.
While you read about new breakthroughs in battery technology every few weeks that could double power, lengthen battery life, and decrease charging time, none of them has actually come to market. It's only because modern electronics are more efficient that battery life for anything is even close to decent.
Nikola Labs, daringly named after the inestimable Nikola Tesla, thinks it has as solution that doesn't involve improving batteries. Instead, it's come up with a smartphone case that turns stray radio signals from the gadget, in this case Wi-Fi and cellular, into electricity.
It makes sense, given that a smartphone's radio signals represent a lot of wasted electricity. In lab tests, the prototype case increased the battery life of an iPhone 6 by 30%.
Even better, the case works best when the smartphone is connected to the Internet and streaming information, or when you're talking on the phone. According to Nikola Labs, downloading a file from the cloud produced 5 volts!
I guess you should run out and get one, right? Not so fast.