Nano-sized spheres of silicon help improve battery performance. ->

Everybody looks like a giant dork at a convention. They're carrying far too much gear -- laptops, smartphones, SLR cameras -- while chatting up vendors, exchanging business cards and scrambling to take notes. Inevitably, at a certain point of the day, you'll see these folks hovered around any free ...

A solar-powered trike designed and built by a student in Pakistan for less than $600 went from idea to completion in just 18 days. Farrukh Khan, of the University of Engineering and Technology Lahore, built a custom aluminum frame for the front part of the trike and used part of a bicycle frame for...

Next time you're at the airport and your phone is running low on battery, reconsider powering up at the charging station. Krebs on Security, a security blog, looked into a charging kiosk at DefCon, an annual hacker conference held in Las Vegas. The kiosk was built specifically to educate attendees ...

With the rise of smartphones and tablets, we've seen the increasing popularity for another type of device: portable battery packs. But who wants to carry another smartphone-sized device in their pocket? Instead, the Card Type Emergency Charger is a credit card-sized battery you can keep in your poc...

As we use our smartphones for more than just calls--GPS navigation, email, Instagraming an epic hipster mustache--having an external battery has become a necessity. But lugging those bigger batteries around is a pain, and can take up valuable gear space. Especially on a hike or climb when every oun...

When you're preparing for the end of the world, stock up on Sanyo's eneloop batteries. The eneloop batteries first came into the market in 2005, but the latest version got a couple key improvements: They can now hold their charge after five years of storage and can be recharged 1,800 times, a 20 pe...

There's nothing worse than being in the middle of nowhere on a weekend rafting trip with a dead phone battery. Especially when you hear banjo music in the distance... But bringing an external battery along where there's water, dirt, dust and risk of long rocky drops usually isn't a wise choice. Unl...