Battery Life

Both Galaxy Tab Ses feature somewhat small batteries, a downside to pursuing a very thin chassis. The 10.5-inch model gets a 30Wh battery compared to 32.4Wh in the iPad Air, while the 8.4-inch model only has an 18.6Wh battery compared to 23.8Wh for the iPad mini with Retina Display.

For our web browsing workload, the battery size and power requirements of displaying mostly white web pages on a high resolution AMOLED display result in substandard battery life. Both devices deliver around 8 hours on a single charge, which isn’t bad in a vacuum - it’s just a regression compared to the Galaxy Tab Pro and far behind the other competition.

Web Browsing Battery Life (WiFi)

The story changes dramatically however once we look at video playback battery life:

Video Playback Battery Life (720p, 4Mbps HP H.264)

Our video playback test is perfect for an AMOLED display as the final Harry Potter movie ends up having a lot of dark scenes in it. With only a small percentage of the display showing white, display power is reduced substantially, resulting in the best video playback battery life of any tablet we’ve ever tested. Even the tiny 8.4-inch Galaxy Tab S can last over 15 hours on a single charge.

Charge Time

Charge time isn’t particularly fast on any of the devices, but the 10.5-inch model in particular takes a while to make it to a full charge. The 10.5 will reach a 90% charge in just under 4 hours, but to make it to 97% takes another hour and the last 3% takes another 42 minutes on top of that. Usable charge time is competitive, but if you’re obsessive about always charging to 100% the 10.5-inch model does take a while to get there.

Display Performance
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  • RobilarOCN - Wednesday, June 25, 2014 - link

    Anand, any tests that actually test the battery life using apps? I use tablets for reading mostly and very curious to see lifespan of the Tab S with an app running constantly.
  • Laststop311 - Wednesday, June 25, 2014 - link

    I've been hoping for 10"+ oled screens for a long time. Shame they still haven't gotten the rest quite right. Lots of stuttering in simple tasks that shouldn't be there. Is there no micro usb 3.0? If there is no micro usb 3.0 ok but if there is really bad to go with 2. It delivers less power and is slower. The cases are utterly terrible. No 64 or 128GB internal memory options is not so good, i mean at least offer us 64GB. 16GB shouldn't even be an option it should be 399 for 32GB and 499 for 32GB 450/550 for 64GB 550/650 for 128GB.

    I'm actually ok with the plastic as it's the lightest most durable option and just makes the most sense. Kinda stupid to sacrifice weight and durability just for a more premium look or feel. The exynos chip is once again another let down. The LTE version with a snapdragon 800 will probably run a lot better maybe even better battery life wifi mode vs wifi mode. Disappointing that it will be released so close to the snapdragon 805 making its first commercial appearance. The 2560x1600 resolution would of greatly benefitted from the new GPU and i feel like current gpu tech on mobile soc's was only meant for 1920x1200 maximum. I think the reason samsung didn't bother with that option is the snapdragon 805 doesnt have an integrated lte modem which was samsungs main reason for using a snapdragon in the lte model. So there was no reason to wait and the snapdragon 810 is too far off.

    I think these high res tablets are slightly ahead of their time. But it's good they are coming out as it motivates the gpu makers to provide large performance increases to accommodate the new resolutions and still be able to push games graphically.

    I think the Galaxy tab s2 will reveal what this new tablet line is truly capable of. A 64 bit snapdragon 810 in the LTE model. Playing all games even graphically intense ones at native resolution smoothly. Wireless charging should be added to the next version too. I see a very bright future for this new S line of tablets and I think they will be sticking around for a long time. I can see the future bringing a 4k oled screen to the line in 2 or 3 years. Can't wait to see what samsung does with bigger oled screens. Would love to see the 12.2" one go to oled as well.
  • R. Hunt - Wednesday, June 25, 2014 - link

    I recently got a Tab Pro 10.1 and after knowing of these new AMOLED tablets I was kinda regretting it. After looking at the browsing battery life results, I have to say that's not the case anymore. Samsung weren't kidding when they said they built these things primarily to watch videos.
  • Aqua1ung - Wednesday, June 25, 2014 - link

    It's basically the 16:10 format that's killing these tablets for me. I don't buy a tablet to (primarily) watch movies on it, and I don't know anybody who does.
  • spectrablue - Wednesday, June 25, 2014 - link

    how about you start browsing the web in a black background white text power saver format instead of the traditional color settings?
  • spectrablue - Wednesday, June 25, 2014 - link

    or even better yet green text...sound familiar?
  • Fidelator - Wednesday, June 25, 2014 - link

    What are the scores for the galaxy tab pro 8.4 on the graphic tests?
  • Fidelator - Wednesday, June 25, 2014 - link

    And this outdated Exynos shouldn't be used in devices on this price range this far into this year, they could have chosen the same K1 as the Xiaomi tab or the 801/805 depending on availability, going cheap isn't going to get a single dollar from me, I'll see what is released alongside Android L and then I'll chose whether to wait for broadwell or buy something in this league.

    iPads aren't bad tablets but I need to access the file system without having to go through hell for that
  • jt194688 - Thursday, June 26, 2014 - link

    I'm just learning this stuff and am changing my 1st Gen. iPad. I love my iPad but thinking about switching to the Samsung Tab S; can you use a thumb drive with it? Advice PLEASE!
  • marytattoo - Sunday, June 29, 2014 - link

    you can use a micro sd card in samsung devices. not sure, but this one will probably take a 128 g.

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