Samsung I9100 Galaxy S II thorough battery life test

20 May, 2011 Samsung

 

The full battery test of the Samsung I9100 Galaxy S II is complete. It took a week of extensive testing and comparing, but now we are ready to throw a load of numbers your way and hope they will be enough to quench your thirst. The Galaxy S II convinced us that its a real beast during the review, but are the huge screen and powerful CPU and GPU too taxing on the battery? Well it turns out that they are not. The slightly larger battery (1650 mAh vs 1500 mAh) and the Gingerbread new, more aggressive stance against battery draining apps obviously have some effect and the Galaxy S II has a slightly better endurance than its predecessor, the original Galaxy S.

 

Cutting to the point, the Galaxy S II survived through 82 hours before its completely charged battery went flat. The handset was hooked up to a 3G network at all times and endured the following usage:

• 90 minutes video playback
• 2 hours music playback
• 40 minutes voice calls
• 30 minutes navigation
• 30 minutes general usage
• 10 minutes browsing
• 10 minutes shooting photo and video
• 20 min gaming


Video playback test

The victory was more emphatic in the dedicated video-test that we run:

• Samsung I9100 Galaxy S II – 8:05 h
• Samsung I9000 Galaxy S – 7:25 h


Screen power consumption

By the way we decided to check what difference the larger display makes, so we know how much of a deficit the Galaxy S II faces at start and here’s what we found. We locked the display brightness set to 50% and auto-turn-off disabled. The battery went flat in just 11 hours and 10 minutes. That’s only 3 hours and 5 minutes longer than the video playback endurance, which suggests that the screen alone is responsible by more than half the Galaxy S II battery consumption.


Web browsing

We also measured the endurance of the smartphone when browsing the web. The full details of the test are over here, but if you do not feel like reading them, here’s a quick summary. The Galaxy S II does marginally better than its predecessor when using the stock browser as the GPU acceleration consumes some power and notably better if you use a third-party browser (Opera Mobile in our case).

• Samsung I9100 Galaxy S II – 4:59 h (Opera Mobile browser)
• Samsung I9100 Galaxy S II – 4:22 h (stock browser)
• Samsung I9000 Galaxy S – 4:06 h

 

Stand-by time

The final battery test we did was the stand-by time. With no usage whatsoever, the Galaxy S II was running for 9 days before it powered off. Now this is a decent achievement, but nowhere near the 25 days promised by Samsung.

 

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