Report: Apple Watch Will Need Charging Every Day

Amidst all the fist-pumping and Bono-goofing yesterday, one piece of information was conspicuously absent: The Apple Watch's battery life. What's the point of strapping a tiny computer to your body if it needs constant charging? According to Re/code, even Apple hasn't quite figured out the battery dilemma yet. » 9/10/14 12:46pm 9/10/14 12:46pm

This Compact Portable Charger Revives Your Phone With Four AA Batteries

A portable charger can bring your dead smartphone back to life if you forget to plug it in overnight, but what if you forget to charge the charger too? That's not an issue with the tiny Oivo since it splits in half to accommodate four readily-available AA batteries that have enough charge to completely bring an iPhone… » 9/09/14 6:45pm 9/09/14 6:45pm

The Clever Plan to Mine Lithium From Geothermal Power Plants' Wastewater

Regardless what you think about the future of phones or wearables or cars, there is one thing nearly everyone can agree on: We will need more batteries. And for that, we'll need more lithium. One startup has its eyes on a new source of lithium: the wastewater from geothermal power plants. » 9/08/14 4:36pm 9/08/14 4:36pm

There's a Massive 26,000 mAh Battery Hidden Inside This Briefcase

The bigger a portable charger you carry, the longer your gadgets can run while away from a power outlet. But backup batteries are heavy, so it's a tradeoff between capacity and what's comfortable to stash in your pocket. Unless you throw a bag like the Phorce over your shoulder, which makes it easy to haul around your… » 9/05/14 10:22am 9/05/14 10:22am

This Portable Charger Reminds You To Bring It Along on Busy Days

A portable charger can save your butt on days when your smartphone never seems to leave your hand—but only if you remember to bring it with you. So not only has Elgato packed 6,000 mAh into its new Smart Power battery, but Bluetooth and an accompanying iOS app as well, so that it can peek at your iPhone's calendar and… » 9/02/14 9:32am 9/02/14 9:32am

iPhone 5 Battery Letting You Down? Apple Might Replace It—For Free

If your iPhone 5's battery just doesn't have the kick that it feels like it should, you might be able to get a new one for free. Apple has found that an apparently small batch of iPhone 5s (not the S or C) that "may suddenly experience shorter battery life or need to be charged more frequently." You can check if yours… » 8/22/14 6:31pm 8/22/14 6:31pm

MIT Explains How To Turn an Old Car Battery Into a Working Solar Cell

There are over 1 billion cars in the world, and the vast majority of them use batteries made from lead. As lithium batteries replace these old timers, eventually there may be many of the lead suckers sitting in landfills. Which is why MIT wanted to find a way to reuse them—by turning them into a new kind of solar… » 8/18/14 4:22pm 8/18/14 4:22pm

The Best (And Worst) Browser For Your Laptop's Battery Life

Ever wondered how much the weight of 10,000 open browser tabs is dragging down your laptop's battery? Fear not: AnandTech just dug into the particulars with a delightfully detailed test to find out which browser is the biggest battery hog. This information could save mankind('s laptop batteries). » 8/13/14 3:12pm 8/13/14 3:12pm

This Temporary Tattoo Is Actually a Battery That's Powered By Your Sweat

What if the sweat produced by your body could power your gadgets? And what if the connection between the two could be made by a temporary tattoo, the more you sweat, the more power the tattoo generates? That's exactly what researchers at UC San Diego have developed—and one day, it could power your wearables. » 8/13/14 9:30am 8/13/14 9:30am

Color-Changing Stained Glass Makes It Easy For Cathedrals To Redecorate

A group of Japanese researchers from the University of Tokyo, the Segawa Laboratory at RCAST, and Sony have created a prototype glass panel with intricate designs that's able to change color based on the how much energy is supplied from an attached rechargeable battery. In other words, it's stained glass for a… » 8/06/14 1:24pm 8/06/14 1:24pm

Turn Your iPhone Charger Into a Portable Backup Battery

Even carrying your iPhone's charger everywhere you go doesn't guarantee you'll be able to keep your phone running all day. Sometimes outlets can be hard to find, and for those times the NomadPlus is here to help—transforming your iPhone's standard charger into a portable 1,500 mAh battery for back power on-the-go. » 7/30/14 2:19pm 7/30/14 2:19pm