Technologizer

[A NOTE FROM HARRY: Please welcome Patrick Moorhead of AMD to Technologizer's roster of contributors. He'll be writing both topics relating to his day job and others that simply stem from his experiences as a gadget enthusiast.]

Do you ever feel like the actual battery life on your notebook never quite equals the information that appears in promotional material? For example, you may see “up to five hours,” but actually get about half that.  Well, you aren’t alone.  I hear it all the time, and if you do a quick Twitter search on the topic, you’ll see lots of discussion.

I can assure you that no devious plot exists to mislead you. It really comes down to a few simple factors.

#1: Measurements are best case: Like a car’s “highway miles per gallon” which gauges the best case (cruising at a sustained speed for an extended period without stop-and-go driving), notebook battery life is typically based on MobileMark 2007. This benchmark primarily measures battery life while the notebook is doing nothing–not even wirelessly connecting to the Internet. A “city-driving” equivalent of notebook battery life doesn’t exist…yet.

#2: Different strokes for different folks: We all use notebooks differently, and therefore will see different battery durations.  Some watch HD web videos on YouTube, some may just do email, and some play more games than others. all of which will mean varying battery life.  You can see this data from AMD here that shows the phenomenon.  (Disclosure: I work for AMD) This also shows that battery life varies depending on the combination of components inside a machine.

#3: Battery life varies over time: The longer you own your notebook, use it, charge, and recharge, over and over again, the more the battery loses its effectiveness.  So theoretically, your longest battery life will be on the first day you crack open the packaging.  See all the people selling new batteries for old notebooks?  Some even say that battery life is variable with heat.

So what should you do?

• Grade battery life on a curve–let’s say, 60% of the claimed performance. If the label says 10 hours, my guess is it’s probably only about 6 hours in real use.
• Ask your retailer and systems providers to provide the “city miles per gallon,” or, using the tried and tested cellphone analogy, “talk-time.” They all have Web sites–and when all else fails, you can ask them over Twitter.

I may have not added back 40% of your battery life, but hopefully you know why you only get 60% of it!

Pat Moorhead is Vice President of Advanced Marketing at AMD. You can find him on his AMD blog, Twitter, FriendFeed, and LinkedIn. His postings are his own opinions and may not represent AMD’s positions, strategies or opinions.

Imagine that you could charge a car battery as quickly as you fill up a tank of gasoline today. Stop imagining –it has become possible. Researchers have developed a new lithium battery technology that can charge and discharge in a matter of seconds.

The journal Nature is reporting that Byoungwoo Kang and Gerbrand Ceder of the Massachusetts Institute of Technology developed a glass-like Lithium mixture for electrodes that allows a charge to be rapidly stored inside of a battery. The battery is designed so that lithium ions move more freely, moving the charge in and out of storage from cathode to electrolyte. The material also retains its capacity through charge cycles.

However, don’t expect laboratory performance at home just yet. Ars Technica has noted that the battery are not entirely compatible with today’s electric grid. For example, a cell phone battery would drawn 360W in ten seconds– for a single charge. Cue the blown circuit breakers.

I’m certain that some happy medium will be reached, and we can all look forward to more advanced batteries in our electronics. This breakthrough eliminates many of the restrictions that today’s batteries place on device manufacturers, and will should lead to more powerful mobile hardware and a greater variety of devices. It’s a big win for consumers and the industry alike.

When Apple used yesterday’s Macworld Expo keynote to confirm rumors that the new 17-inch MacBook Pro would have a sealed battery, it laid the news on the audience gingerly. The keynote included a rather lengthy video in which Apple engineers discussed the new laptop’s sophisticated battery. In between sound bites on its impressive chemistry, long life, and green characteristics, they explained that battery compartments, doors, and latches take up a lot of room, and that you can put a bigger battery into a notebook if you just seal it in.

The new MacBook Pro is the second Apple notebook with a sealed battery (last year’s MacBook Air being the first). It also joins all iPods and the iPhone. It seems entirely possible that Apple will eventually sell no products with removable batteries, starting whenever it replaces the current 13- and 15-inch MacBook designs.

While Apple’s video didn’t explicitly confront the obvious objections to a notebook design with a battery that can’t be removed, its reasoning is obvious. The primary reasons you’d want to remove a laptop’s battery are to swap in a new one for longer cord-free productivity, and because batteries lose their ability to be fully recharged over time. The company says that the 17-inch MacBook Pro runs for an impressive “up to” 8 hours on a charge, and that it can be fully recharged 1000 times, versus a few hundred times for most laptops. Therefore, historic reservations about sealed batteries are no longer an issue. Right?

Well, maybe. I’m instinctively cautious about the idea of a battery I can’t remove. (I had toted a second one with me when I liveblogged yesterday’s keynote, just in case.) But Apple’s claims about the new battery leave me willing to at least consider the notion of a sealed notebook. (I want, of course, to read what kind of battery life folks other than Apple say the new MacBook Pro has–I’ve never owned any notebook from any manufacturer that consistently came anywhere near the promised “up to” amount of life.)

That’s just me. I’m curious whether Apple’s move will have any influence on the rest of the industry. Offhand, I know of no other company that sells sealed laptops. (HP sells optional batteries based on technology from Boston Power that also promises 1000 recharges, but they’re traditional replaceable models.) One suspects that most other manufacturers will be a lot more cautious–Apple is simply bolder about making seemingly sacrilegious design decisions that other computer companies. Often for good, sometimes for worse. And I’ll bet most IT department staffers within big companies would recoil at the idea of laptops with fixed batteries.

Of course, if the new 17-inch MacBook Pro is a smash hit, all bets are off, and we might see sealed designs catch on really quickly. For now, though, I’m still thinking that a meaningful percentage of people who might otherwise be enthusiastic about a 17-inch Mac notebook will be intimidated, at least, by Apple’s decision.

How about you?

I woke up this morning, started to scan the news on Techmeme, and spotted an InfoWorld headline from a story about a new HP battery that very briefly got me very excited (hey, I was still a little drowsy):

A 3-year battery! That would be 26,280 hours of power between charges if I have my math right–26,304 if we’re talking a leap year. And it was just three months ago that HP was trumpeting its also-impressive-sounding 24-hour battery:

Okay, okay–the new battery doesn’t run for three years. (I think–actually, the story on InfoWorld doesn’t state how long it’ll run.) But it’s still interesting.

The battery in question is a lithium-ion model was developed by Boston Power, and the three years (or 1,000 charges) are how long it takes before the power it provides on a charge begins to degrade. (Typical battery start to weaken after 300 charges, according to the article.) It’ll also charge to 80 percent of its full capacity in a zippy 30 minutes.

HP is calling these Enviro batteries, and will sell them as a custom-configuration option for $20-$30 with certain consumer notebooks starting early next year. I’d certainly upgrade to one if I were buying an HP laptop.

But I still hope to live to see a laptop battery that just keeps going and going for three years or more…