batteries

Stanford Ovshinsky, 'Edison of our age,' dies at 89

Stanford R. Ovshinsky, a self-taught scientist who invented the nickel-metal hybrid battery and a new class of semiconductors, died Wednesday at age 89.

The cause of death was prostate cancer, according to his son, Harvey Ovshinsky.

Hailed in 2006 by Economist magazine as "the Edison of our age," Ovshinsky held more than 200 patents on a wide variety of pioneering products, from thin-film solar cells to hydrogen fuel cells. In the 1950s, Ovshinsky upset conventional thinking by rejecting the notion that only well-ordered crystals had useful electronic properties and suggested that so-called amorphous, or disordered, materials could be … Read more

Alleged iPad Mini screen, battery leaked in photos

No, it's not a complete version of Apple's much-rumored iPad mini, but it could be a few more pieces of the puzzle.

Parts reseller ETradeSupply, which posted accurate photos and videos of Apple's iPhone 5 casing some three months before its official debut, today has images of what it says is the 8-inch LCD screen for Apple's smaller iPad, as well as its battery.

Neither part is connected to any electronics, or other pieces of housing, though as ETradeSupply notes, the leaked images add credence to the fact that Apple will stick with a 4:3 … Read more

Government-funded battery maker A123 files for bankruptcy

A123 Systems, a lithium-ion battery maker that has received hundreds of millions in government support, filed for bankruptcy protection today.

The move makes A123 the latest government-backed energy company to file for Chapter 11. Many of these companies have struggled to make money as demand slows for their products. A123 received more than $250 million in state and federal funding to help it run its operations providing batteries for electric cars and other products. But it has also faced many problems, including defective products.

A123 today said Johnson Controls will help finance the filing by buying A123's automotive business … Read more

iExpander iPhone case adds SD, extra battery, 30-pin connector

If you glance at your iPhone wish list, you may see things like longer battery life, expandable SD memory, a better flash, and an old school 30-pin connector for your shiny new iPhone 5. You can have all those things if you're willing to pledge $75 to the iExpander project on Kickstarter.

The iExpander is a jack-of-all-trades case that crams a whole lot into a relatively small size. You're still going to add 6.3mm of chunk to your sleek phone, but the trade-off is pretty tempting.

Let's start with the flashy stuff. The case has an ultrathin CAP-XX supercapacitor that powers an LED flash that can make a big difference in the quality of your low-light photos. … Read more

See your MacBook battery status with Battery Health

Battery Health is, as its name implies, designed to tell you about your MacBook's battery, including current capacity and current charge level. Since battery health is an important factor for many of us on the move, knowing how healthy our battery is and how long we can depend on it can help prevent losing power when you need it most. Knowing when it is going to need replacing is also a handy piece of knowledge.

Battery Health is a small utility that installs quickly and easily. When launched the first time, Battery Health asks if you want to run … Read more

Magnetyze brings conductive charging to iPhone 4/4S

One of the features I was secretly hoping to see in the iPhone 5: induction-powered battery charging.

This already exists in the form of third-party products like the Powermat and Energizer Qi. Alas, Apple missed a chance to wow the world, catch up with smartphones like the Lumia 820 and 920, and perhaps distract from the massive disappointment that is the Lightning connector.

Fortunately, if you own an iPhone 4 or 4S, you still have options for cutting the charging cord. One of the latest: BuQu Tech's Magnetyze, a complete inductive conductive-charging kit priced at $69.99. Update: According … Read more

iPhone 5 estimated to cost 41 cents per year to charge

A new estimate claims Apple's latest iPhone costs 41 cents a year to keep charged, less than a third of its sibling, the iPad.

The metric, put out this week by energy analytics company Opower, is based on the assumption that iPhone owners will recharge their device once a day for the entire year:

Phone 5: consumed 9.5 watt-hours to charge, taking 1 hour and 50 minutes. Maximum wattage was 6.3 watts, with an average of approximately 5.0 W. Multiplying 0.0095 kWh/day by 365 days = 3.47 kWh per year. Annual charging cost is … Read more

Sony's svelte external battery looks like a smartphone

When you absolutely need to make sure your main squeeze -- your smartphone or tablet, that is -- can stay powered when away from a wall outlet, a seemingly never-ending number of external battery options exist.

Few of the chargers, however, look as sleek as the half-inch thick Sony CycleEnergy external battery announced today, featuring lithium ion flavors in either 3,500 or 7,000mAh capacities. The slim aluminum frame weighs up to 6.9 ounces and sports a design that probably makes it easy to bundle along with a phone. … Read more

Mophie Juice Pack Reserve Micro: A power pack for your keychain

You know the old saying: you can never be too rich or too thin, or have too much battery power for your Android phone.

If you're forever running low on juice, you've probably thought about packing along a spare battery -- but that's a hassle. Not only do you need a way to keep it charged, you also need a convenient place to stow it.… Read more

Top 5 features missing from iPhone 5

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The iPhone 5 has arrived, and it's pretty great. But I can't shake this nagging feeling that Apple could have done more.

A week ago, CNET's David Carnoy penned a great roundup of the most-wanted features that didn't make it into the iPhone 5. It seemed like easy pickings for a Top 5 video, so I imposed a ranking, stood in front of a camera, and created the video you see before you (click here if you don't see a video at the top of this … Read more