Battery Life

The Galaxy Note 8.0 features an integrated (non-removable) 4600mAh battery. Assuming 3.7V chemistry we’re looking at 17Wh, a 4.4% increase over the iPad mini. The display is higher resolution and the CPU cores run at a 60% higher frequency than they do in the iPad mini (not to mention that there are twice as many cores). Although the GPU is slower, ARM’s Mali 400 doesn’t appear to be as power efficient as PowerVR’s SGX 543MP2. To make a long story short, the Galaxy Note 8.0 might have a slightly larger battery than the iPad mini, but the platform itself should consume (potentially significantly) more power.

To quantify (we love numbers), we once again turn to our own battery life tests. We’ll start with our 2013 web browsing battery life test, first introduced in the iPhone 5 review:

We regularly load web pages at a fixed interval until the battery dies (all displays are calibrated to 200 nits as always). The differences between this test and our previous one boil down to the amount of network activity and CPU load.

On the network side, we've done a lot more to prevent aggressive browser caching of our web pages. Some caching is important otherwise you end up with a baseband/WiFi test, but it's clear what we had previously wasn't working. Brian made sure that despite the increased network load, the baseband/WiFi still have the opportunity to enter their idle states during the course of the benchmark.

We also increased CPU workload along two vectors: we decreased pause time between web page loads and we shifted to full desktop web pages, some of which are very js heavy. The end result is a CPU usage profile that mimics constant, heavy usage beyond just web browsing. Everything you do on your device ends up causing CPU usage peaks - opening applications, navigating around the OS and of course using apps themselves. Our 5th generation web browsing battery life test should map well to more types of mobile usage, not just idle content consumption of data from web pages.

Web Browsing Battery Life (WiFi)

The Galaxy Note 8.0 delivers about 13% lower battery life than the iPad mini in our test. The drop isn’t tremendous, but it’s just beyond the point of being noticeable.

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

Video playback is much worse. The Note 8.0 shaves off 23% from the iPad mini’s battery life on a single charge. Apple has traditionally done a great job of implementing low power video decode, it seems like Samsung needs to do some work here as even the larger Note 10.1 suffers.

3D Battery Life - GLBenchmark 2.5.1

Finally, for the true worst case scenario, we have our GLBenchmark 3D battery life results.

3D battery life is one area where the old Galaxy Tab 8.9 actually leads everything else, the reason being that its hardware is so slow it's simply incapable of drawing all that much power compared to newer, faster tablets. Here we get a good feel for the lower bound in the Note 8.0's battery life - a bit under 4 hours. The 8 ends up with ~ 40% less time on a single charge compared to the iPad mini.

The Note 10.1 does a lot better here simply due to its larger battery (offset by a larger display, but benefitting from a lower power SoC).

Charge Time

Samsung bundles a fairly standard 5V/2A USB charger with the Note 8.0. The Note 8.0 takes a hair under 4 hours to charge from empty to full (no current draw at the wall). This is comparable to the iPad mini.

Charge Time in Hours

WiFi, GPS Performance Performance: Upgrading from a Galaxy Tab 8.9
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  • martie01 - Saturday, May 18, 2013 - link

    I'd agree, but the other features are just way to cool. This is truly a Great "Phablet"! The price is bit steep. Check out my review for lowest prices and cool features as well if you care to.

    http://squidoo.com/samsung-note-8
    Reply
  • Madhavi - Thursday, May 09, 2013 - link

    Samsung Galaxy Note 8.0 was launched recently and became one of the hottest tablets in the markets. to Keep up in trend,we have designed and released this ipod case .here is the link you can have a look about the samsung galkaxy 8.0 Reply
  • Una GF Srbija - Tuesday, May 14, 2013 - link

    Makers S8U Detachable Wireless Bluetooth Keyboard with Folddable Leatherette Protective Case and Stand for Samsung Galaxy Note 8.0

    its amazing with this red and white colour...totaly differnt....and very low price for that quality...just 50 $
    Reply
  • Gadgetguy52 - Tuesday, May 14, 2013 - link

    As a southpaw, I appreciate the functionality of the S pen for writing. I wrote a review on my reasons for buying and made a comparison chart with the iPad mini and other devices.

    http://www.squidoo.com/samsung-galaxy-note-8-0-pri...
    Reply
  • vipuls1979 - Monday, May 27, 2013 - link

    Features are cool of Samsung but the recent tablet launched by Sony Xperia Z tablet is awesome for more details you can checkout on http://mobiknowhow.blogspot.com Reply

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