The first floor of the University of California's newest engineering building is soon to be powered by the equivalent 1.1M high-end lithium-ion AA batteries. If you are curious as to what this looks like, the 1.1 megawatt power supply is big enough to cover a 50-meter long Olympic size swimming pool. That's a lot of power.
Your watch battery isn't small. This battery is small. At six times thinner than a bacterium, Rice University's new battery is 60,000 times smaller than a AAA battery.
That feeling of smug you get with your sleek Macbook and its integrated battery may not be worth it anymore, as a security researcher has shown that Apple batteries are vulnerable to hacking. It's possible to brick the battery completely, or even worse, infect it with malicious code that not even a complete OS re-install can fix.
Until electric cars evolve beyond the need for gigantic battery packs, we're going to end up lots of batteries that have reached the end of their lifespan. This doesn't mean that all those batteries are destined for the scrap heap, though, and GM has some creative ideas on how to reuse them.
Everything is always 100% better after a nice little nap, and Wi-Fi is no exception. By allowing smartphones to take sub-second naps while waiting to transfer data, it's possible to double battery life with just a clever piece of software.
Why would anyone ever want to carry around a two pound battery pack that uses disposable batteries to charge their MacBook Air, which barely weighs more than that by itself? There are reasons, and they may even be good reasons.
Electricity is nothing like gas. You can't just pump a tank full of it into your electric car, which means that we're reduced to lengthy charge times or inefficient compromises like battery swap stations. MIT researchers may have come close to solving this problem with a battery goo that you can pump just like gas.
A flywheel battery is a system that stores electricity as kinetic energy, in the form of a a wheel that spins at tens of thousands of RPM. Made of carbon fiber and levitated in a vacuum using magnetic bearings, hundreds of flywheels are about to join the power grid in New York.
Seeing as we don't yet have ultracapacitors in our electric cars that can recharge themselves in seconds or minutes that would make refueling comparable to gasoline, the only reliable way to get a hot n' fresh stack of batts looks to be these robotic battery swapping stations.
By converting some of the wires inside memory chips into carbon nanotubes, researchers say that they could boost the battery life of cell phones and laptops and other mobile electronics by a factor of 100.