Samsung Galaxy S6's battery life test score trails that of its predecessor


At 0.27 inches (6.8 mm), the Galaxy S6 is one of the thinnest mass-produced devices on the planet. But such remarkably slim profiles often require sacrifices on the hardware level, as there simply isn't enough space to fit everything. One component that requires quite a bit of room? The battery.

The Galaxy S6 sports a 2,550 mAh cell – a built-in one at that – and with that capacity it needs to keep a power-hungry, 1440 x 2560 Quad HD Super AMOLED display going for as long as possible. According to our custom battery life test that mimics the typical person's day-to-day usage, the S6's juicer manages 7 hours and 14 minutes before giving up, and then needs 78 minutes to charge from zero back to full – a good result, but not excellent.

Indeed, the Galaxy S6's predecessor, the Galaxy S5 (2,800 mAh), went through our stressing battery life test a year ago and scored slightly higher, at 7 hours and 38 minutes. Of course, it's quite obvious that Samsung has carried out a great deal of optimizations in terms of power efficiency, as the S6 is not far behind, despite its smaller battery and much more pixel-dense screen. Regardless, those among us that were more than content enough with a 1080 x 1920 resolution are probably a bit disappointed right now.

In any case, the Galaxy S6 proved to be a good enough performer, and is still ahead of the likes of the HTC One M9, the LG G3, and both the iPhone 6 and iPhone 6 Plus.

Battery life (hours) Higher is better
Samsung Galaxy S6 edge 8h 11 min (Excellent)
Motorola DROID Turbo 10h 42 min (Excellent)
Motorola Moto X (2014) 5h 45 min (Average)
Samsung Galaxy S6 7h 14 min (Good)
HTC One M9 6h 25 min (Average)
Sony Xperia Z3 9h 29 min (Excellent)
Apple iPhone 6 5h 22 min (Poor)
Apple iPhone 6 Plus 6h 32 min (Average)
Samsung Galaxy Note 4 8h 43 min (Excellent)
Samsung Galaxy S5 7h 38 min (Good)
LG G3 6h 14 min (Average)
Charging time (minutes) Lower is better
Samsung Galaxy S6 edge 83
Motorola DROID Turbo 126
Motorola Moto X (2014) 176
Samsung Galaxy S6 78
HTC One M9 106
Sony Xperia Z3 235
Apple iPhone 6 147
Apple iPhone 6 Plus 171
Samsung Galaxy Note 4 95
Samsung Galaxy S5 122
LG G3 120

Related phones

Galaxy S6
  • Display 5.1" 1440 x 2560 pixels
  • Camera 16 MP / 5 MP front
  • Processor Samsung Exynos 7 Octa, Octa-core, 2100 MHz
  • Storage 128 GB
  • Battery 2550 mAh(23h 3G talk time)

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82 Comments

1. wando77

Posts: 1168; Member since: Aug 23, 2012

TWO HOUR MORE than the iphone 6 and you're complaining about it. Seriously?

25. Aploine

Posts: 445; Member since: Oct 24, 2013

8 hours of what exactly? "According to our custom battery life test" No detailed reference on methodology of measurement and firmware version. One could easily call it fake http://goo.gl/qIT2Mx

30. Neros

Posts: 1016; Member since: Dec 19, 2014

I think it's the 8hrs of the on-screen time, but I'm not sure. They run their script with the screen switched on.

31. sgtdisturbed47

Posts: 970; Member since: Feb 02, 2012

I'm sure if you emailed them, they'd gladly let you know the fine details. Different battery tests can easily yield different results. Same goes for EPA ratings with fuel economy, your mileage will vary depending on usage habits. Either way, it's a way to gauge the battery life, but not to be taken as gospel. I'm glad I got the Note 4 instead of the Turbo. Excellent battery life and awesome all-around.

32. Aploine

Posts: 445; Member since: Oct 24, 2013

Everyone who reads the article has to send them an email for those? Idts

43. Tajiseo

Posts: 48; Member since: Mar 03, 2015

GSM did the test with pre-release software. They are known for changing their battery lfie testing whenever phones launch

44. bestmvno

Posts: 251; Member since: Mar 07, 2014

It may be a proprietary script, in which case all details don't need to be told for a variety of reasons. What they do tell you, under their benchmark methodology link on this site, is that for this and all battery tests, the screens for all devices are adjusted to a brightness of 200 nits.

60. bur60

Posts: 981; Member since: Jul 07, 2014

8 hours of screen on time. I can tell because the Z3 really gets around 10 hours of screen on time even with regular use.

69. Cicero

Posts: 1148; Member since: Jan 22, 2014

All tested phones runs the same test. Take the numbers like a reference. So S6 Edge have a good battery life.

71. Joeypogs

Posts: 4; Member since: Mar 27, 2015

To make all your arguments to rest about the battery life of s6 edge i did the simplest of math calculation, let me expound: 1. Standard screen luminance is supposedly set to 200 nits, however, the edge can only reach to 180 nits max according to PA. Therefore there's a 10% difference to all other test subjects. 2. Extrapolationg the anecdotal 8h11m endurance of the edge and subtracting the 10%, which is roughly 49m, difference equates to an adjusted endurance of 7h25m. 3. Thus, if we take into account regular s6 endurance of 7h14m and compare it to the now adjusted s6 edge endurance of 7h25m, we can clearly see that both devices have an almost exact endurance. Giving a slight, albeit, negligible advantage of s6 edge roughly in part due to a 50mah boost battery specs compared to regular s6. 4. This gives credence to PA's methods in calculating endurance ratings because of the consistency it produces when other people try to analyze the numbers posted in public and coming out of their own analogy and recalculations. 5. Im a fan both of gsma and PA, they just do different battery life statistics. However, either websites do their best in testing new phones so that us consumers, are well-informed before we make the purchase with our hard-earned money. Because frankly, regular joes like us don't have the resources to buy every single flagship on release and later on finding out that it didn't meet our expectations. That is why PA and GSMA are here to help us all out. So enough with your bashing trolls, be appreciative of all these guys and gals efforts to keep us consumers well informed. Thanks PA! :)

33. Elfmonster unregistered

Look it's simple. The small pretty phone with the bad battery and SD card situation is targeted at women demographics. The big Note phablet will continue to be targeted at men demographics. If you're a power user who wants the s6 to be a real power phone, you're SOL.

38. tacarat

Posts: 854; Member since: Apr 22, 2013

I thought it was the other way around. Small phone for men's pockets, big phone for purses. I have a note 2, but relaxed fit slacks.

46. amayerro

Posts: 5; Member since: Mar 19, 2015

Future phones will never have replaceable batteries. Tablets dont have that option since i dont know... since they came out, duh!!! Technology will only get smarter and phones will get thinner. And for you to say that the s6 is targeted at women demographics,( lol.... sorry i cant.... lmfao,) is wrong! lol........

48. VZWuser76

Posts: 4974; Member since: Mar 04, 2010

The Toshiba Thrive, a few from Dell, some of Samsung's Note Series tablets and most recently the Samsung Galaxy Tab Active all have had removable batteries.

79. dermit88

Posts: 20; Member since: Dec 19, 2012

Post hoc ergo proctor hoc

49. kevin91202

Posts: 642; Member since: Jun 08, 2014

Completely wrong. Both men and women carry phones of all sizes. But he Note phones are catered to business people and not specifically to men. It just happens that more males are considered "business" people.

52. Synack

Posts: 688; Member since: Jul 05, 2011

I'm still wondering why the S6 Edge has a noticeably better battery life than the regular S6. There isn't much different about them.

66. tinnitus85 unregistered

The S6 Edge has a bigger battery by 50mah.

73. elitewolverine

Posts: 5192; Member since: Oct 28, 2013

and also its nits are lower in the test

53. medicci37

Posts: 1361; Member since: Nov 19, 2011

Not everything is iPhone related. Battery life generally gets better from year to year especially when you half the size of the processor in the space of a year. There's a lot of people who would rather have a phone that's a little thicker with bigger battery. That being said, I'll be getting the Edge

56. Doakie

Posts: 2478; Member since: May 06, 2009

Wait.... Two hours more than the iPhone, Gods gift to iTards? It's unbelievable! The iPhone is the king of battery life!!! I heard that on some iPhone blog or something....

2. pradeepreddy

Posts: 65; Member since: Apr 01, 2013

z3 takes almost 4hrs to charge!!! WOW, my ipad mini2 charges in less than 3hrs.

28. may_czos

Posts: 956; Member since: Nov 22, 2014

Z3's battery is going to have longer lifespan.

39. buccob

Posts: 2980; Member since: Jun 19, 2012

according to who? My Z3 Compact came with a 1.5Amp charger and it takes a lot less than what PA states They probably used 850mA charger which is the cheap one Sony delivers, the one they send to reviewers and midrange devices

42. buccob

Posts: 2980; Member since: Jun 19, 2012

Also, PhoneArena should do a test charging the phones using a generic unique charger... so this way it is completely fair, and you can actually measure charging times, instead of using the one from the box. My Z3C supports quickcharge 2.0, and PA never even tried that

58. mrej201

Posts: 226; Member since: Feb 04, 2015

no you should use the one that came with the phone you buy one of those cheap Chinese charge all you doing is damaging the charging port... at least with samsung I get a 50 percent discount who I use to buy at least 3 charger which came to be 17 dollar each

51. fyahking

Posts: 1146; Member since: Jan 28, 2015

My note 4 takes an 1 hr, beat that!

55. CreeDiddy

Posts: 2275; Member since: Nov 04, 2011

Use the 12V 2.1A charger rather than the small charger that it came with. It takes my iPad Air 2 to fully charge in less than 1.5 hours.

3. Kakarotto

Posts: 255; Member since: Dec 07, 2010

S6 Edge has only 50mAh more than S6 and there's almost 1 hour difference between them? You obviously did something wrong.

4. Fallen1

Posts: 288; Member since: Nov 14, 2014

Not really, it should be expected, 1080p to QHD

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