How to Change the Battery on the New Galaxy S6

You guys. The built-in status of the Samsung Galaxy S6's battery doesn't mean the battery is totally non-removable. All you need is your Galaxy S6, a hair dryer, tweezers, a micro Phillips head screwdriver, a spudger tool, an intimate knowledge of electrical engineering and about an hour to kill. Simple! » 3/23/15 5:40pm 3/23/15 5:40pm

This Is What a Li-On Electrode Looks Like as It Drains and Charges

Lithium-ion batteries are ubiquitous—as is their gradual degradation over the lifetime of a gadget. Now, using a new imaging technique, a team of researchers shows what happens deep within li-on cells as they charge and discharge. » 3/23/15 8:03am 3/23/15 8:03am

Researchers Turn Packing Peanuts Into Rechargeable Batteries

Many of us have shared the guilty twinge of pouring a box of packing peanuts into a trash bag, knowing that our convenient foam waste will end up sitting in a landfill for the next few thousand years. Soon, however, we may be able to juice these little nuts for energy. » 3/22/15 9:00am 3/22/15 9:00am

Your New Galaxy S6 Will Have a Built-In Expiration Date

Your smartphone's battery life won't last forever. Today, your digital companion might work all day long, then party late into the evening—but a year from now, you'll almost certainly have depleted a substantial portion of its capacity. What happens when your phone no longer lasts the day? Time to replace the battery!… » 3/02/15 10:15am 3/02/15 10:15am

Start (or Expand) Your Eneloop Collection on the Cheap Today

We've seen a handful of deals lately on your favorite rechargeable batteries, but if you haven't begun collecting them yet, the Eneloop Power Pack is the best place to start. » 2/20/15 9:45am 2/20/15 9:45am

Watching these ultra fast robots arranging batteries is fascinating

A Camera Bag Divider That Protects and Charges your Gear

Unless you're heading out to shoot for National Geographic, you don't want to leave the house with a giant over-stuffed camera bag hanging off your shoulder. Everything you bring has to play a crucial role for your photography outing. Or, better yet, two crucial roles like this padded camera bag divider with a 3,000… » 2/10/15 5:20pm 2/10/15 5:20pm

Everyone's Got Room For a Portable Charger No Bigger Than a Pack of Gum

If your phone ends up dying in the middle of the day you've got no one to blame but yourself. You want a giant bright screen? It's going to cost you in battery life. And with Goal Zero's upcoming Flip 10 charger, if you've got room in your pockets for a pack of Juicy Fruit (or at least Bubblicious), then you've got no… » 2/04/15 3:22pm 2/04/15 3:22pm

Energizer Is Finally Making AA Batteries Using Recycled Materials

Once the use of toxic mercury in household batteries was eliminated a couple of decades ago, it finally became safe to just toss dead AAs in the trash. But if deep down you actually felt guilty about not being able to recycle them, Energizer's here to help your conscious with its new EcoAdvanced AAs made with four… » 2/03/15 9:25am 2/03/15 9:25am

What Are Capacitors and Will They Really Charge Your Phone in Seconds?

Your phone died. Again. In these scenarios, who among us has not dreamed the dream of a future where our devices charge instantly and last forever. As capacitors—or even more exciting, ultracapacitors—get better and better at storing energy, they could replace batteries and realize at least one half of that dream. » 2/02/15 12:04pm 2/02/15 12:04pm

Batteries Made With Bulletproof Kevlar Fibers May Never Explode

One of the most common reasons that batteries explode and catch fire—like on Boeing's 787 Dreamliner—is because over time small conductive pathways grow inside the battery's inner structure that eventually cause it to short out with disastrous results. But Nicholas Kotov, a professor at the University of Michigan, and… » 1/27/15 8:15am 1/27/15 8:15am

The New TI-84 Has Battery Life That Will Make Your Phone Cry

The storied TI-84 is about to get its first refresh in a few years, and the experts at Cemetech have some exclusive information on the latest entry. Here comes TI-84 Plus CE. » 1/26/15 6:30pm 1/26/15 6:30pm

A Smart 9-Volt Battery Adds Phone Notifications to Any Smoke Detector

There are plenty of smart smoke detectors on the market that connect to your home's Wi-Fi network to provide smartphone notifications when there's trouble, but they're an expensive upgrade to the dumb smoke detector you've (hopefully) already got watching over your home. The $40 Roost promises pretty much the same… » 1/07/15 7:20pm 1/07/15 7:20pm

How To Take Care of Your Smartphone Battery the Right Way

Your smartphone is a minor miracle, a pocket-sized computer that can fulfill almost every whim. But none of its superpowers matter a bit if it runs out of juice. With removable batteries becoming more and more rare, you've got to take good care of the one you got. Fortunately, it's not to hard keep the lithium-ion… » 12/26/14 12:30pm 12/26/14 12:30pm

California's Grid May Soon Store Energy in Giant Ice Packs 

California wants better batteries, which is why the electric company Southern California Edison is planning a set of, let's say, unconventional energy storage solutions, including huge 450-gallon ice packs. Why? It all has to do with a little-known problem with California's wind-reliant electric grid. » 12/22/14 4:55pm 12/22/14 4:55pm

How to Make Your Own AA Battery

If you're the type of person who likes to do things the needlessly complicated way, then come on over. Here's how to make AA batteries entirely by hand, courtesy of YouTube's NurdRage. » 12/22/14 10:43am 12/22/14 10:43am

Your Old Laptop Batteries Could Be Repurposed to Power Lightbulbs

Every year, some 50 million lithium-ion laptop batteries find their way to the trash heap. IBM researchers in India have come up with a better idea. Many of those batteries still contain useable cells, which can be used to keep the lights on in homes without reliable access to the grid. » 12/04/14 2:10pm 12/04/14 2:10pm

A 9-Volt Battery Is All This Tiny Charger Needs To Revive Your Phone

When you're spending the day with family you probably haven't seen in a year, nothing is more vital to keeping your sanity than your smartphone. And to ensure it's got enough charge to keep you busy on Twitter instead of actually having to talk to your cousins, the diminutive but clever Plan V charger accepts common… » 11/28/14 6:30pm 11/28/14 6:30pm

Mophie Powerstation Plus Is a Burly, Convenient Backup Battery

Mophie portable batteries are some of the best out there mostly because you can count on them to be reliable. The last thing you want is a cheap backup that fails you. The company's latest top-tier line packs integrated charge and sync cables into a slick design that might actually be worth the hefty price tag. » 11/19/14 12:00pm 11/19/14 12:00pm

This Portable Charger Has Every Connector You'll Need, Even AC Prongs

At this point there are just as many portable chargers on the market as there are iPhone cases and Bluetooth speakers combined. But somehow Ventev has done the impossible by creating a portable charger that manages to improve on the near infinite number of designs that came before it, by adding built-in Lightning and… » 11/12/14 5:00pm 11/12/14 5:00pm