Battery Life

When Apple announced that the MacBook Air would have a 5 hour battery life I couldn't help but laugh. As Charlie over at the Inquirer pointed out, Apple did nothing new with the MacBook Air. The tough engineering was done by Intel and the component suppliers, Apple simply designed the chassis. Because Apple is doomed to use off the shelf components like everyone else, there's no magical way Apple can deliver 5 hours of battery life where its competitors have failed.

Close to 5 hours is attainable on the Air, but only in a very light usage scenario. Realistically you're looking at 2 - 4 hours of battery life out of the MacBook Air depending on what you're doing. In order to help set expectations, we've got a few battery life tests we put together (the descriptions of the tests were mentioned earlier on the SSD battery life page).

Battery Life: Wireless Internet + MP3 Playback

Apple's 5 hour claim is laughable but not as much as I expected. If I wanted to I suspect I could hit 5 hours by making the web browsing test less stressful, but my focus was on real world usage scenarios, not proving Apple correct. Regardless, 4 hours and 16 minutes doing what I consider to be the intended usage model of the Air is respectable. It's not great, but it's not terrible either.

The SSD improves things considerably, and it's worth noting that the fastest MacBook Pro can also offer similar battery life despite having a more power hungry CPU and screen (thanks to a larger 60WHr battery). The aging Core Duo based MacBook Pro put up an absolutely dismal time, which just goes to show you how much things can change in two years.

Battery Life: DVD Playback

The DVD playback test is also decent, you can watch a full length movie on the Air (even The Godfather). But watching two back-to-back isn't possible (although I do think you could squeeze two viewings of Rambo in there and frighten your fellow airline passengers).

Once again we see that the Air gives us better battery life than the original MacBook Pro, and a time that's competitive with the fastest MacBook Pro. Armed with an SSD, the battery life is the best Apple offers today.

Battery Life: Heavy Downloading + XviD Playback + Web Browsing

And then we have the multitasking scenario. At just under two and a half hours, this isn't your do-everything notebook. That should've been obvious from the get-go with the whole lack of an optical drive, 2GB memory limit and no built-in Ethernet port. The MacBook Pro advantage here is the greatest it has been in all of our tests, giving almost 30% more battery life than the standard Air.

Performance Summary & Subjective Feel Thermals & Strange Issues
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  • sprockkets - Wednesday, February 13, 2008 - link

    I don't get it. I can use my Pioneer laptop slot loading burner on an external enclosure and it be powered solely via the one usb port and works just fine, even while writing to dvds.

    For that matter, I can do the same with notebook laptop drives. Rarely do I need both usb ports connected in order for it to work.
  • sprockkets - Wednesday, February 13, 2008 - link

    Only about 16mbits per second on the xfer rate on wireless? Wow. Were you using n?
  • JarredWalton - Thursday, February 14, 2008 - link

    I don't know what Anand used, but I've seen everything from 3MBps to 12MBps on an 802.11n network... all with laptops in the same room, and many using the same chipset (Intel 4965AGN). Overall, N tends to feel about half as fast as 100Mbit Ethernet - or about twice as fast as 802.11G. Router choice unfortunately still has a major influence on 802.11N performance.
  • Imaginer - Wednesday, February 13, 2008 - link

    It is what the overall feel and message of the article indicates to me. It is a bit expensive, non-expansive, lacks most utility to be used in most mobile situations, and it is purely for computing on the bare minimum.

    Kind of like that so called weekend car. I don't think I myself will have ANY need for such a device. Give me a powerful desktop and a versitle yet remaining non cumbersome notebook anyday.

    Most people in the market for a laptop usually would use it like their normal away from home computer and because of this, the air really disappoints. (not that I would invest in a new computer anytime soon).
  • jedmitchell - Wednesday, February 13, 2008 - link

    hey, so good review overall -- kept it very even handed considering the difficulty of reviewing a niche product like this. one hardware point I'd like to mention though is the info you give on the X3100. certainly the idea behind it is that as an integrated controller it won't provide very fast graphics, but there's a trick here: most of the things it's not rated to run... run. at least on the older macBook (santa rosa). final cut pro, maya, and photoshop actually all run pretty seamlessly on the X3100, both in OSX and windows (fcp is more memory/drive limited there than GPU). the only small problems are in windows where the X3100 drivers by intel are actually lacking several openGL 2.0 features present in apple's version.

    the X3100 even plays older games on windows without much trouble -- I can run the Orange Box games at 1024x768 with high quality settings and see a fairly regular 30fps, less a few texture memory glitches. anyway, it would be interesting to see how that performance in the same chipset scales from the macBook to the air.
  • jdwango - Wednesday, February 13, 2008 - link

    However I wish you had also tried to install Windows XP/Vista via boot camp and reported your thoughts.
  • joey2264 - Wednesday, February 13, 2008 - link

    This would be a fairly good review if you would just mention the fact that most of the sacrifices Apple made to create the Macbook Air simply weren't necessary. If you look like at a notebook like the Fujitsu Lifebook S6510 of the Lenovo X300 this becomes clear. Looking at these two notebooks, it is obvious that each of the manufacturers could have come up with a 13.3 in, 1 spindle notebook that didn't make hardly any other compromises (decent keyboard, decent port selection, replaceable battery, upgradeable memory, standard 2.5" hard drives (Lenovo could have probably fit a 2.5" hard drive in there if they had used a 13.3" screen, with the requisite larger footprint, although it would have been a little heavier), etc).
  • michael2k - Wednesday, February 13, 2008 - link

    The S6510 you mention is heavier (by a pound) and nearly twice as thick! It is much more comparable to a MacBook (5 pounds and an inch thick vs 4 pounds and 1.42 inches thick).

    The X300 is also not available yet, so a comparison will have to wait until we find out about price and build quality.
  • mlambert890 - Thursday, February 14, 2008 - link

    OK, so then the Sony TX, the Fujitsu P7k, the Toshiba Portege, the Dialogue Flybook, the Panasonic Toughbook, the Dell XPS1210, the Sony SZ, The LG XNote....

    There's a pretty long list of notes that are smaller and ligher or as light or slightly heavier with a lot more features than the MBA.

    The MBA is THINNER. Last I checked thinner is a BS feature. When someone can explain to me WHY thinner means ANYTHING beyond looking cool at Starbucks, maybe Ill be interested.

    The Sony X505 was pretty much the same situation as the MBA except it had a removable battery and more ports and that was 3 years ago. I think the MBA was like .2" thinner than the Sony *at its thinnest point* and about the same at the thickest.

    The MBA is big news for the cult of Mac which lately is including PC sites like this.
  • michael2k - Friday, February 15, 2008 - link

    Fujitsu P7230: Too slow (one core at 1.2GHz vs two cores at 1.6GHz), half as much ram (1GB vs 2GB) for the same price
    Dell XPS 1330: You can't get a 1210 from Dell.com (one pound (33%)heavier) for 2/3 the price
    Sony TZ250N: You can't get a TX from Sonystyle.com, too slow (2 cores at 1.2GHz vs 1.6Ghz), too expensive ($600 more)
    Sony SZ750N: Too big and heavy (1 pound (33%) heavier and twice as thick) for the same price

    You argue against thinner: Thinner is only a measure of weight. Compare to 3 pounds (2.7 to 3.2 pound) and you already eliminate the toughbook, the Dells, the Portege, and the SZ. Compare to the CPU speed and you eliminate the Fujitsu and Sony TZ.

    So what is left? The Lenovo X300, which is still more expensive, but for that extra expense you get an optical drive.

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