Dell Inspiron 15 Battery Life

Dell shipped our Inspiron 15 review unit with their standard 6-cell, 48Wh battery and advertise it as being able to hit up to 3 hours and 43 minutes of running time. For our battery life testing, we set the screen's brightness to a measured 100 nits.

Battery Life - Idle

Battery Life - Internet

Battery Life - DivX 720p

Battery Life - x264 720p

Relative Battery Life

The running time of the Inspiron 15 isn't exactly breaking any records, but it's not a showstopper and Dell should be commended for at least a measure of truth in advertising. Leaving the computer idle at about 30% brightness in the software settings resulted in a battery life two minutes longer than what Dell advertises. When we put the computer to basic use, we get a touch over three hours, which is just about the bare minimum of what a modern notebook should be able to provide. When video playback enters the equation, however, battery life takes a swan dive, losing a full hour of running time. The Inspiron 15 is still managing two hours of useful life, though, just long enough to watch a movie before having to put the machine into standby.

Dell Inspiron 15 Gaming Performance Dell Inspiron 15 LCD Quality
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  • Hrel - Wednesday, March 3, 2010 - link

    Haven't even gotten past the first page yet, but a 768p screen paired with a 5400rpm hdd just makes me lose ALL interest! Especially for almost $1000, wtf!
  • wolrah - Thursday, March 4, 2010 - link

    The 100mbit Ethernet connection is where I lose interest. Gigabit is cheap as dirt. There is no reason at all for any computer shipping today to not have gigabit, period. 802.11n not being there I can sort of see at the low end, since good 802.11n APs are still hard to find, but gigabit is an unacceptable omission.
  • donjuancarlos - Thursday, March 4, 2010 - link

    It's the Core i5--new technology that's jacking the price (not even available at dell.com right now). If you get a core i3, you can get one for under $600. I've seen them under $500 on sale. That's just fine price-wise.

    And I agree with Anandtech- the i5 in this laptop is overkill. For better performance you're much better off to get the $500 version of this laptop and throw an SSD in it.
  • T2k - Thursday, March 4, 2010 - link

    I disagree: it's a DTR, remember?
    And if you do video/fx/cg/3D/graphics/etc jobs faster CPU and more memory always help a lot.
  • strikeback03 - Thursday, March 4, 2010 - link

    a 15" relatively thin laptop isn't necessarily a DTR.
  • dagamer34 - Thursday, March 4, 2010 - link

    Because people who worry about stuff like that, Dell would rather you purchase a Studio XPS than from the Inspiron line of laptops.
  • Hrel - Thursday, March 4, 2010 - link

    Only problem with that is that they START at like a thousand bucks.
  • JarredWalton - Thursday, March 4, 2010 - link

    So skip the Studio XPS and look at the regular http://www.dell.com/us/en/home/notebooks/laptop_st...">Dell Studio line. I find those to be a lot better in overall features, customization options, etc.

    1: Please don't respond to spam posts, or you risk having your comments deleted. The following two comments were from other readers.

    jecs:
    Its ugly, but when a big fight involving big capitals has been beautiful???. Do you expect poetry? And then what is the point in a patent if it can't "protect" you or your products. And yes, I don't like it. But is better to have order and laws than not having them at all, or a system that can be fooled everywhere.

    Apple is a corporation and is no better in that sense than the rest. Don be fooled because there are no angels here and there, and don't be naive, this is the world we live in. But again, ¿Why does a corporation exist on a legal basis? It does not includes just this silly method Apple is fighting for. What's involved here is the main reason why we need a legal system, clear rules and what should be protected and from who.

    T2k:
    Screw Dell and its price gouging - http://www.jr.com/acer-computer/pe/ACE_AS5740G6979..." target="_blank">take a look at here!

    Yes, that's the SAME CPU there, bigger HDD, better screen, everything included and graphics is the LATEST DX11 Mobility Radeon 5650 1GB instead of Dell's outdated chip - all this for $750 SHIPPED.

    Last year Acer became the #2 PC maker and it's not an accident: it's killing Dell with its faster model refresh rate, better quality-control and lower prices.
  • JarredWalton - Thursday, March 4, 2010 - link

    Technically, T2k, that's the same size screen, same resolution screen, and a cheaper CPU (the i5-520M has a lot price of $225; Intel doesn't list volume pricing on the i3 or i5-430M, but I'd expect it's at least $75 less). But otherwise, yes, the Acer you linked looks like a much better buy.
  • lyeoh - Friday, March 5, 2010 - link

    Acers tend to be crappier than Dells though.

    http://www.engadget.com/2009/11/17/laptop-reliabil...">http://www.engadget.com/2009/11/17/lapt...-survey-...

    (feel free to ignore the projections)

    Dell's aren't that great but they aren't that crap either. They're smack right in the middle which I think is where they are aiming for anyway.

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