Battery Life

Surface features an integrated 31 Wh battery, which is larger than what’s in the iPad 2 but smaller than what Apple used for the iPad 3.  Charging duties are handled via a 24W power adapter with a custom magnetic connector.

Of all of the aspects of Surface, the charging connector feels like the least well executed. For starters, the connector is quite long – about twice the length of a MagSafe connector. Secondly, the magnets in the connector aren’t all that strong so the attraction to Surface isn’t very confidence inspiring. The third issue is alignment. Because of the 22-degree beveled edge on Surface, you have to approach mating the power connector to the tablet very carefully. More often than not I’d have the connector match up but not fully connect. It usually required a few minor adjustments to get the connector to actually start charging. My final complaint is about the power indicator LED on the connector itself. The LED only glows white and gives no indication of whether or not the device is done charging. Furthermore, it doesn’t even glow all that bright, making it hard to tell in daylight whether the device is even getting power. I’m pleased with virtually all aspects of Surface’s physical design, but the charging port and connector need to be redone for the next generation.

The power adapter itself is larger than the 10 – 15W units you get with most tablets in this price range, but it is also a considerably larger power supply. You can take Surface from completely empty to fully charged in a little over 3 hours hours. You can also get Surface up to 50% power, while using the device, after just over an hour of being plugged in. Microsoft wanted to prioritize real world productivity scenarios where you had a limited amount of time to charge but also needed to use the device. The larger power adapter and not gigantic battery were the right balance to meet those needs.

The power brick features a Windows RT logo, but is otherwise clean. The surface of the adapter is a nice soft touch plastic. The two prongs for US models stow away neatly in the adapter. The power cable is nice and long at around 1.5m. There’s no built in cable management other than a little U to keep the connector attached to the end of the cable.

To measure battery life I put Surface through our 2012 tablet battery life suite. All tests were run with the display calibrated to 200 nits and with Surface, its Touch Cover was attached.

Overall battery life is pretty competitive with the iPad. In lighter use cases Apple pulls ahead slightly, but if you look at our updated web browsing test the heavier CPU load pushes Surface ahead of the third gen iPad. It’s not clear how the 4th gen iPad would stack up in this comparison.

Video playback is also decent for Surface, although Apple manages to pull ahead with the win there as well. The bigger accomplishment is that we’re seeing a Windows device with battery life that’s comparable to other tablets running mobile OSes designed from the ground up.

Microsoft has the right OS platform to be competitive in this space. With some more power efficient hardware I could see a future iteration of Surface moving its way up these charts.

Camera Performance
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  • jonyah - Tuesday, October 23, 2012 - link

    That's where Surface Pro comes in. I think pretty much everyone would go for the Pro if it were available day one, which is why they've delayed it. Core i5 power (though less battery life) and x86 compatibility will make it a winner.....i think.

    I hate windows 8 for any normal machine, though it may be nice in a tablet form. I'm still waiting to be able to actually play with one first.
    Reply
  • Zink - Tuesday, October 23, 2012 - link

    $900+ is too much for most people. Ultrabooks are amazing but sales numbers are poor. Sales are much higher on $500 laptops and tablets. The Surface Pro is also a bigger fan cooled device that won't offer the same battery life so the experience suffers there.

    I think the killer devices are the Atom tablets at $500. x86 and faster than ARM but with the same form factors and price. Asus is pricing at $600 for their VivioTab RT with battery/keyboard dock. I'd like to see 1080p too but maybe another product or manufacturer.
    Reply
  • shompa - Wednesday, October 24, 2012 - link

    *hint* Ultrabooks sell well: Macbook Air.
    PC can't compete with Apple at the same price. Today's ultrabook are priced same as Apple (but usually with larger SSD and/or faster processors).

    That is like a BMW priced same as a Skoda. Most people buy BMW.

    That is why Android tablets can't compete at the same price point as Apple.
    That is Surface will have a hard time.

    The rumour where that the Surface would cost 199 dollars, and that would have been a hit. (But OEMs would hate MSFT even more). The 199 price would work since people have to buy apps from MSFT paying them 30% on each app. MSFT subsidise Nokia phones and Xbox360 when it was release. This is a tactic they used many times before.

    And I believe that Surface will head that way. We will see a 50% price cut within a year.

    I really want to use Surface. But from the looks of it: its a nerd/corporate machine. The usual MSFT market. Wont sell 100 million.
    Reply
  • Hoekie - Wednesday, October 24, 2012 - link

    Why? Get the cheaper 32GB version and pop in an SD card if price is an issue.

    Looking at the first reactions from people around me, Surface will be hot selling.
    Office + Multiuser + Light + batterytime+ touchcover+port connections. Actually a no brainer. In fact the 32GB no cover version is sould out everywhere including Germany.
    Reply
  • vision33r - Tuesday, October 23, 2012 - link

    MS will have to give away Xboxes again to move this after the initial batch of early adopter orders are filled. Reply
  • N4g4rok - Tuesday, October 23, 2012 - link

    Care to elaborate? Reply
  • MadMan007 - Tuesday, October 23, 2012 - link

    translation: "I don't like MS and/or Windows 8 but don't have anything useful to say." Reply
  • LancerVI - Tuesday, October 23, 2012 - link

    That was an extremely accurate translation. Bravo to you sure and thanks for the lulz. Reply
  • shompa - Wednesday, October 24, 2012 - link

    MSFT have given away many Xbox360 so sell Windows phone. MSFT have done similar things many times spending tens of billions to take market share and then start to charge more money.

    Surface wont fly of the shelves. After the first batch MSFT needs to do something. Giving away Xbox360 is cheap for them

    Later we will see a price cut. Up to 50% within a year. It will also be intresting if MSFT follows Apples "1 year" bump cycle or a more aggresive "pc/Android" bump cycle. iPad4 have 400% faster CPU and at least 800% faster GPU. A6 is as fast as Intel per clock cycle. (and yes: I understand that A6 is dual core and intel is quad + clocked much higher. But the fact is that A6 is as fast per clock cycle. ARM will replace X86)

    Surface is not a mass market product. It cant compete with the sub 300dollar 7 inch tablet market. It will have a hard time compete with Ultrabooks and Ipads.

    A MSFT product that cost the same as an Apple product have never sold.

    Surface +
    -its more of an PC. It could be the only computer
    -Office
    -Kickstand
    -the covers are great
    Surface -
    Pricey 600 dollars for ancient hardware.
    Reply
  • maximumGPU - Wednesday, October 24, 2012 - link

    i would love to borrow your crystal ball some day! Reply

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