battery

If you've been hit by a natural disaster recently, you know you can't put too high a price on mobile power supplies.

If your phone is dead and the grid is unreliable, JuiceCans are one way to keep communicating with loved ones.

This Indiegogo fundraising project centers on a stackable USB power pack called a JuiceCan. Add more packs to form a JuiceCane and you get more power. … Read more

The famed iPhone battery drain issue seems have to resurfaced for some people who've made the leap to iOS 6.0.2.

Several users chiming in on Apple's Discussion Forums say the latest iOS update, which was designed to fix Wi-Fi problems, is draining their batteries faster.

One iOS 6.0.2 updater said that "I can usually get through a day with about 75 percent of my battery power remaining. Today I've gone through 90 percent and I've done nothing special with it."

Another said: "Today I barely used my phone at … Read more

Microsoft's Windows 8 Pro version of the Surface tablet got a cool reception today when pricing was disclosed and comments surfaced about battery life, but keep in mind that the core electronics scream ultrabook, not tablet.

After Microsoft announced pricing this morning, it was immediately panned for being too expensive and reportedly getting half of the battery life of the RT version.

Both legitimate concerns. Let's focus on battery life first.

Battery: A quick look at the specs tells you it's pretty close to an ultrabook -- and really thin ultrabooks, not unlike the Surface Pro's … Read more

How much does battery life matter to tablet users? Microsoft may soon find out, first hand.

Microsoft went public today with pricing for its Surface Pro PC/tablet devices -- the Intel-based ones running Windows 8 Pro that will allow users to run their existing third-party apps on the desktop. The 64GB version will be $899; the 128GB version, $999. (Both prices include a pen, but no touch or type keyboard/cover. So add another $120 to $130 for that.)

Pricing is not all the team shared about the Microsoft-branded Surface Pros, due out in January 2013.

Surface Pros are … Read more

If you have a MacBook system that contains dual graphics cards, then you have the option of enabling either the internal graphics or the discrete graphics card, depending on the hardware demands of the tasks you are running.

Integrated or "internal" graphics functions are included on the Intel processor in your Mac (though some prior Mac systems used Nvidia chipsets with Nvidia-branded internal graphics). This graphics option is relatively slow but also draws far less power than a dedicated graphics processor. The integrated graphics are powered fully when the system is turned on.

If your system includes a … Read more

Congrats to Tami M. of North Mankato, Minn., for winning a Zooka speaker bar in last week's Crave giveaway.

Ever found yourself with several gadgets that need recharging when you aren't in a position to juice them all up? This week's giveaway's got the power to help.

The MyCharge Portable Power Bank 6000 is a high-capacity 6000mAh rechargeable battery pack that can simultaneously fuel products including smartphones, iPads, e-readers, and Bluetooth headsets. It comes with Micro- and Mini-USB plugs, plus an Apple dock connector and a full-size USB port, meaning it can power a whole lot of different devices. Handy when the gang's on a camping trip and all the working tree outlets are taken. … Read more

Devices that monitor inner ear activity could eventually be powered by the ear itself, according to research detailed in the current issue of the journal Nature Biotechnology by scientists from MIT, Massachusetts Eye and Ear Infirmary (MEEI), and the Harvard-MIT Division of Health Sciences and Technology (HST).

They say that for decades we have known the inner ear houses its own natural battery, but this is the first demonstration of its ability to power something external without compromising hearing.… Read more

With all the hoopla about the relative graphics performance of the fourth-generation iPad and the Nexus 10, it's easy to forget another important performance metric: battery life.

Battery life dictates how long you can actually use the unit before it requires a recharge, so I'd say it's pretty darn important. So important in fact that it gets its own blog post. Here I pit the last two generations of iPad, the iPad Mini, the Nexus 7, and the Nexus 10 against each other in a take-no-prisoners battery blood bath! Or acid bath I guess.

The results The results speak for themselves, but if you need further explanation, continue reading after the chart. … Read more

MacFixIt Answers is a feature in which I answer questions e-mailed in by our readers.

This week, readers wrote in with questions about MacBook systems not booting on battery power, how to deal with advertisements in Safari, how to restrict printing with an administrator password in OS X, and fonts not displaying properly in Apple's Font Book utility. I welcome views from readers, so if you have any suggestions or alternative approaches to these problems, please post them in the comments!

Question: Laptops not booting when on battery power MacFixIt reader Robin asks: