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

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 Benchmarks

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

82 Comments
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posted on 26 Mar 2015, 10:57 44

1. wando77 (Posts: 796; Member since: 23 Aug 2012)


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

posted on 26 Mar 2015, 11:51 14

25. Aploine (Posts: 425; Member since: 24 Oct 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

posted on 26 Mar 2015, 12:10 1

30. Neros (Posts: 1016; Member since: 19 Dec 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.

posted on 26 Mar 2015, 12:10

31. sgtdisturbed47 (Posts: 392; Member since: 02 Feb 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.

posted on 26 Mar 2015, 12:15 9

32. Aploine (Posts: 425; Member since: 24 Oct 2013)


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

posted on 26 Mar 2015, 13:16

43. Tajiseo (Posts: 45; Member since: 03 Mar 2015)


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

posted on 26 Mar 2015, 13:19 1

44. bestmvno (Posts: 251; Member since: 07 Mar 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.

posted on 26 Mar 2015, 17:30

60. bur60 (Posts: 821; Member since: 07 Jul 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.

posted on 27 Mar 2015, 02:26 3

69. Cicero (Posts: 848; Member since: 22 Jan 2014)


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

posted on 27 Mar 2015, 04:54 2

71. Joeypogs (Posts: 4; Member since: 27 Mar 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! :)

posted on 26 Mar 2015, 12:17 4

33. Elfmonster (Posts: 376; Member since: 23 Dec 2013)


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.

posted on 26 Mar 2015, 12:51 5

38. tacarat (Posts: 724; Member since: 22 Apr 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.

posted on 26 Mar 2015, 13:26

46. amayerro (Posts: 5; Member since: 19 Mar 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........

posted on 26 Mar 2015, 13:43

48. VZWuser76 (Posts: 3634; Member since: 04 Mar 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.

posted on 27 Mar 2015, 23:04

79. dermit88 (Posts: 20; Member since: 19 Dec 2012)


Post hoc ergo proctor hoc

posted on 26 Mar 2015, 14:31 3

49. kevin91202 (Posts: 514; Member since: 08 Jun 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.

posted on 26 Mar 2015, 14:49

52. Synack (Posts: 677; Member since: 05 Jul 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.

posted on 27 Mar 2015, 00:56

66. tinnitus85 (unregistered)


The S6 Edge has a bigger battery by 50mah.

posted on 27 Mar 2015, 06:09

73. elitewolverine (Posts: 5018; Member since: 28 Oct 2013)


and also its nits are lower in the test

posted on 26 Mar 2015, 14:57

53. medicci37 (Posts: 1269; Member since: 19 Nov 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

posted on 26 Mar 2015, 15:33

56. Doakie (Posts: 1855; Member since: 06 May 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....

posted on 26 Mar 2015, 10:58 1

2. pradeepreddy (Posts: 65; Member since: 01 Apr 2013)


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

posted on 26 Mar 2015, 12:04 7

28. may_czos (Posts: 709; Member since: 22 Nov 2014)


Z3's battery is going to have longer lifespan.

posted on 26 Mar 2015, 13:05 8

39. buccob (Posts: 2495; Member since: 19 Jun 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

posted on 26 Mar 2015, 13:14 4

42. buccob (Posts: 2495; Member since: 19 Jun 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

posted on 26 Mar 2015, 16:04

58. mrej201 (Posts: 225; Member since: 04 Feb 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

posted on 26 Mar 2015, 14:43 1

51. fyahking (Posts: 859; Member since: 28 Jan 2015)


My note 4 takes an 1 hr, beat that!

posted on 26 Mar 2015, 15:10

55. CreeDiddy (Posts: 603; Member since: 04 Nov 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.

posted on 26 Mar 2015, 10:59 7

3. Kakarotto (Posts: 251; Member since: 07 Dec 2010)


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

posted on 26 Mar 2015, 11:02

4. Fallen1 (Posts: 282; Member since: 14 Nov 2014)


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

posted on 26 Mar 2015, 11:03 11

6. Kakarotto (Posts: 251; Member since: 07 Dec 2010)


They have the same specs excluding the battery u tard.

posted on 26 Mar 2015, 11:17 3

14. Neros (Posts: 1016; Member since: 19 Dec 2014)


S6 edge ran at 180nits while s6 at 200nits. Here's your culprit.

posted on 26 Mar 2015, 11:49 1

24. PapaSmurf (Posts: 10409; Member since: 14 May 2012)


Which should only give around 10 minutes more, not 60.

posted on 26 Mar 2015, 13:38

47. sgodsell (Posts: 3070; Member since: 16 Mar 2013)


Not for the entire length of the screen on time.

posted on 26 Mar 2015, 11:08

10. james_fuston (Posts: 7; Member since: 26 Mar 2015)


Read the page for the S6 edge. Manual brightness tops out at 180 nits, rather than 200 (which all the other phones were tested at). There's your 1 hour difference and friendly reminder to keep your brightness low.

posted on 26 Mar 2015, 11:08 2

11. Rydsmith (Posts: 487; Member since: 20 Jun 2012)


Then obviously GSM Arena, INCX, and many others did something wrong as they are reporting similar results.

posted on 26 Mar 2015, 11:02 5

5. Retrospective1 (Posts: 45; Member since: 24 Feb 2015)


Still beats the over hyped iPhone 6 = Good if for me.

Take into account the stunning screen compared to it's rival, thinner profile better specs all round. If Apple were using QHD i'd dread to think about the battery usage currently.

S6 rocks

posted on 26 Mar 2015, 11:08

9. Retrospective1 (Posts: 45; Member since: 24 Feb 2015)


Edit: Still beats the over hyped iPhone 6 = Good enough for me.

Take into account the stunning screen compared to it's rival, thinner profile better specs all round. If Apple were using QHD i'd dread to think about the battery usage currently.

S6 rocks

posted on 26 Mar 2015, 14:32 5

50. kevin91202 (Posts: 514; Member since: 08 Jun 2014)


Apple doesn't know what QHD is. They just barely made HD in the last few months.

posted on 26 Mar 2015, 16:23 1

59. Tooluka (Posts: 51; Member since: 27 Nov 2014)


Well S6 is not QHD also. It has Pentile RGBG matrix where there is only 2/3 as much red and blue subpixels. So 577sppi (green) plus 408sppi (red) plus 408sppi (blue) totals only to 464ppi instead of official 577ppi.
It is hard to compare this matrix to true rgb matrix but I'd say that it is barely full HD or a little bit higher.

PS: of course S6 display is just damn great, it is better in most aspects than any competitors and even 464ppi is more than enough. I only dislike marketing lies about hard numbers.

posted on 26 Mar 2015, 18:47

61. medtxa (Posts: 1104; Member since: 02 Jun 2014)


nonetheless the GPU still push QHD resolution not less.

posted on 28 Mar 2015, 07:56

80. Trex95 (Posts: 877; Member since: 03 Mar 2013)


You're right 2 suppixels per pixels.

posted on 26 Mar 2015, 11:04 4

7. datguyglad (Posts: 98; Member since: 29 Aug 2014)


All these complaints about the battery of the s6 and it still beat the iPhone.! Not to mention that it's a less then a half hour difference from the S5.

posted on 26 Mar 2015, 11:07 1

8. bubbadoes (Posts: 814; Member since: 03 May 2012)


Strike 1

posted on 26 Mar 2015, 11:15 2

12. Neros (Posts: 1016; Member since: 19 Dec 2014)


24min isn't a deal breaker. So the battery is still good.

posted on 26 Mar 2015, 11:16 5

13. scramasax (Posts: 38; Member since: 07 Mar 2015)


I think the Galaxy S6 (especially the S6 Edge) shows an amazing battery life, especially when you consider the 2k screen and unheard off power of its microprocessor !!!.......

posted on 26 Mar 2015, 11:58 1

26. LionStone (Posts: 717; Member since: 10 Dec 2010)


Ya, amazing battery life as long as you don't do anything intensive...or play a game or stream video or hotspot because that little battery is just gonna fold.

posted on 26 Mar 2015, 12:31 2

35. TBomb (Posts: 666; Member since: 28 Dec 2012)


couldnt you say that abotu any of the phones up there? If you beat em in practice, you should be able to beat them in a real game? Or am i wrong

posted on 27 Mar 2015, 06:18 2

74. elitewolverine (Posts: 5018; Member since: 28 Oct 2013)


Depends on how much the cpu/gpu draw. If the device is pulling in a small amount of power doing normal tasks to get these tests, then all of a sudden you push a game and it draws 150% over the competition then its long video playback means nothing.

posted on 27 Mar 2015, 07:05

76. TBomb (Posts: 666; Member since: 28 Dec 2012)


Thank you for the clarification. Would having a full length movie on repeat/game test be a good way to test this?

posted on 26 Mar 2015, 11:17 8

15. dd11 (Posts: 10; Member since: 20 Jul 2010)


Sony Xperia Z3 and Z2 support Quick Charge 2.0 but only the Japanese variants. The Sony Xperia Z3 Compact, Xperia Z3 Tablet Compact and Xperia Z2 Tablet all support Quick Charge 2.0 internationally.
Z3 Compact lives even +1h longer than its bigger brother Z3 (because of smaller screen, obviously). And it able to get 60% charge in 30mins. The king! Long live to Sony!
Z3C happy owner.

posted on 26 Mar 2015, 11:37 3

20. Rydsmith (Posts: 487; Member since: 20 Jun 2012)


It also has a history of not being waterproof when it touts it as one of its best features. It gets water damage under the flaps, even when completely sealed. The camera has terrible and bleed and is subpar at best due to the software used on the phone.

So no, the Z3C isn't a great phone, it is OK but due to the manufacturing woes of the waterproofing failure, it is truly meh.

From a disgruntled Z3C owner that had water damage even though all flaps were closed.

posted on 26 Mar 2015, 13:11 8

41. buccob (Posts: 2495; Member since: 19 Jun 2012)


I already lost count on how many times I submerged and wet my Z3 Compact... just take a look at my profile picture...

I have tested in the shower, pool, beach, rain... so far so good...

This is not as widespread as you say... The camera is very good, might not beat the Note 4, but I've compared many pics to iPhone 5s, iPhone 6, Galaxy S5 and Nexus 5 and the quality is very similar...

You should have take it back to Sony and requested a vacuum test to see if it was a manufacturer defect or not... Mine is working great

posted on 26 Mar 2015, 11:23 8

16. Neros (Posts: 1016; Member since: 19 Dec 2014)


Htc m9's battery life is so bad. I wonder why? Damn, so many ppl were trash talking s6 for battery life and it seems that m9 screwed up big time.

posted on 26 Mar 2015, 12:01

27. LionStone (Posts: 717; Member since: 10 Dec 2010)


Those tests were done without the final software, they need to redo the test!

posted on 27 Mar 2015, 01:29

67. TerryTerius (Posts: 1443; Member since: 10 Apr 2014)


I really doubt that HTC is going to make drastic changes to their battery life anytime soon. If they had the ability to give their phone another hour or half hour of battery life, they would have done so already. It is extremely rare for a company to do that so soon after the phone has already been released. I'm not saying it's impossible, but it is highly unlikely they would do so in the next week or so. Maybe some future patch. Who knows?

posted on 26 Mar 2015, 11:24

17. ironmarc89 (Posts: 52; Member since: 22 Jan 2012)


just imagine the ROMs when developers get their hands on this. The battery will improve even more

posted on 26 Mar 2015, 11:25 3

18. Symon_Fleece (Posts: 334; Member since: 30 May 2014)


That's why they should put atleast 2800 mAh, because the battery isn't removable, but good results!

posted on 26 Mar 2015, 11:30 2

19. Loubielou (Posts: 496; Member since: 11 Jul 2012)


Why?did Samsung put a Less Powerful Battery in the Galaxy S6 is Totally Odd,the Battery inside the Galaxy S6 should be more than the one they Offered in the Galaxy S5,as thats the Best Way to Attract people to there New Phones,by Offering better Batterylife,o.k Samsung removed the Removable Battery Option to Improve the Built of the Phone,but the Camera Hump Sticks Out to Much on the Galaxy S6 and really Spoils the Look of the Phone,We did not need a Glass Back on the Galaxy S6,as a Normal Back could have Made the Phone More Affordable for Consumers

posted on 26 Mar 2015, 11:39

21. wando77 (Posts: 796; Member since: 23 Aug 2012)


How do you figure better battery life is a way to attract more people to your phone? Hundreds of millions of people have purchased iphones even with their shoddy battery life

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