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 Yesterday 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 Monday 4:55pm

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

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

If anything in your house runs on batteries, you owe it to yourself to buy some Eneloops. They won your recommendation for best rechargeables, and the voting wasn't even close, so whether you're starting your collection, or just adding some spares, we've got some great deals for you today. » 11/06/14 9:46am 11/06/14 9:46am

The Best Battery Charger

Taking as many votes as the other four contenders combined, La Crosse takes home your nod as the best battery charger. You praised it for its versatility, ease of use, wide range of options, and features like the ability to refresh lost capacity in your batteries. [La Crosse BC1000] » 11/03/14 3:18pm 11/03/14 3:18pm

The Best Rechargeable Batteries

Unsurprisingly, Eneloops dominated the best rechargeable battery voting, taking almost 80% of the vote as of this writing. The Eneloop line has an incredible reputation, and garnered huge numbers of positive anecdotes from our readers. In addition to the winning AAs, Eneloop offers AAAs, chargers, and C and D spacers. » 10/23/14 2:45pm 10/23/14 2:45pm

Finally, a Lithium Battery That Warns You Before It Bursts Into Flames

Lithium ion batteries are wonderful things, but they're unfortunately given to short circuiting and bursting into flames every now and then. It's extraordinarily rare, but it happens. A Stanford research team thinks they've solved this little big problem by building an early warning system into an existing battery.… » 10/13/14 11:46am 10/13/14 11:46am