Battery Life: 6 Hours

I swear the Kindle Fire has a hard stop at six hours of continuous use. Regardless of the nature of my benchmarks, the Fire always dropped out after six hours of use. I ran our video playback test, our tablet browsing test and our smartphone browsing test - in every case the Kindle died in around 6 hours:

General Usage - Web Browsing, Email & Music Playback

Video Playback - H.264 720p Base Profile (No B-Frames)

Obviously these only matter if you're going to be using the Fire as a tablet. As a Kindle, you can expect longer battery life as there's simply less work going on and the majority of the SoC is just power gated during that time.

Either way you're still limited by the fact that the small chassis of the Fire can only accommodate a 16Whr battery. That's around three times the capacity of a high end smartphone battery, but it has to cope with a much larger (and more power hungry) display.

GPU & WiFi Performance Final Words
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  • Fincanejoe - Tuesday, November 29, 2011 - link

    I will try to correct you but you are so turned around a far off the path that this may be difficult.

    I own a Kindle 2 as well as a Kindle Fire and have owned a ipad and android tablet:
    * No one who owns a Kindle (non Fire) would ever suggest Kindle Fire, ipad, or Android tablet could ever replace the passive - not light emitting - Kindle as a reader. Anyone who has stared at a computer screen for too long and/or Kindle owners understand this.
    * Kindle Fire is not trying to accomplish all the tasks the ipad or android tablets are trying to accomplish. That's just it "trying to accomplish".

    The ipad and droid tablets are tweeners trying to accomplish what laptops do well and cell phones do well all in one device. The problem is none of the tablets does the job very well at his point and. They are "cool" devices but one the cool wears off and reality sets in you realize a tablet is not as good as a laptop (for what laptops do) and not good enough as a cell (for what cells do) to replace either. That's why I returned my ipad and adroid tablet after the cool factor wore off (couple of days).

    The Kindle Fire does not try to bite off such a large chunk of the pie. It fills a smaller niche and does it well. I use my google account (mail,docs,etc) and Amazon account for storing content. What the Kindle fire does is manage and connect me to all this content exceptionally well with a better screen, much longer battery life, smaller footprint. ipad is too big, this device is just the right size for this purpose. And yes if I want to read a book in a pinch amazon sync bookmarks where I left off on my real reader, Kindle 2.

    Lets not for get this small item either - K Fire sets you back $200 while the ipad sets you back at least $600 until the next great device comes around in about 6 - 12 months.

    This is how Kindle Fire is an Apple ipad market share "stealer" not killer. Sure there will be the Apple fanboys but aside from that, the practical people will stick to their laptops, cell phones, and Kindles.
  • solipsism - Tuesday, November 29, 2011 - link

    Lots of hate for tablets. You might want to rethink that for a more objective position.
  • Sabresiberian - Wednesday, November 30, 2011 - link

    Ummm - well, if he hates tablets, I say he has a right to, since he has actually bought them and used them. He at least had an open enough mind to try them out before he decided that they don't work very well.

    ;)
  • joshv - Wednesday, November 30, 2011 - link

    "No one who owns a Kindle (non Fire) would ever suggest Kindle Fire, ipad, or Android tablet could ever replace the passive - not light emitting - Kindle as a reader. Anyone who has stared at a computer screen for too long and/or Kindle owners understand this."

    Incorrect. I love the passive Kindle display, but I also read a lot in bed, and I hate the hack of an external LED (clipon or otherwise). The Fire works great in bed, and I suffer no eyestrain whatsoever. It's pixel density is also quite high, so text looks smooth and clear.

    I've really never understood the LED eyestrain thing. It just seems like a self-perpetuating meme. People hear it, and when their eyes hurt they go "yeah, must be because I stare at an LED screen all day long".
  • wicko - Wednesday, November 30, 2011 - link

    Yeah, I seriously doubt it's the LCD screen that's causing eye-strain or headaches. I look at LCDs 10-12 hours a day, as do many others, and I don't have any problems like that. Sure, there are some more sensitive to light then others (I have brown eyes, which are the least susceptible to problems like that), but it isn't a general thing that happens to everyone, and I see no proof that it's the LCD itself. I start getting headaches when I play Battlefield 3 for too long, and I imagine it's because I'm getting blasted with colour, fast moving objects, and, probably the main cause, sounds of explosions and weapon fire. But I don't have these problems when I'm programming/browsing/etc.
  • wicko - Wednesday, November 30, 2011 - link

    Also forgot to mention, when I'm playing BF3 and I get those headaches, it's because I've been playing for 4-5 hours straight. If I took breaks in between, I wouldn't need to take tylenol :p
  • Reflex - Wednesday, November 30, 2011 - link

    You just said you have no problems with LCD's, but then you listed your problems with LCD's.

    I think you've missed the point. On eInk there is no need for a break after an hour or two. The screen does not fatigue the eyes. Even if it were in full motion, 3D with color as rich as a LCD, it would not fatigue the eyes to watch.
  • joshv - Thursday, December 1, 2011 - link

    I can read my Fire and stare and LCD monitors all darned day long. No headaches, no eyestrain.
  • Finraziel - Thursday, December 1, 2011 - link

    Nope, with e-ink I get a neckstrain because I lie in uncomfortable positions keeping the damn thing within the light... I was actually going to post because I was surprised at Anand/Vivek so boldly stating that e-ink is better than LCD for reading, it's not that simple and just because a lot of people prefer e-ink does not change the fact that it's a matter of preference.
    I myself gave my e-ink device (not a kindle but a sony pocket edition, unfortunately I'm on the wrong side of the atlantic, can't get a fire either...) to my mom because I found that I actually preferred reading on my phone(!) to using the e-ink device, exactly because I usually read in dim/dark conditions and as good as never in direct sunlight.
  • genomecop - Thursday, December 1, 2011 - link

    Couldn't agree more.

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