Galaxy S8 and S8+ official battery life stats are in: a mixed bag compared to the S7 and S7 edge

The Galaxy S8 and S8+ are hot of the press, and the exact battery capacities of the 5.8-incher and its larger 6.2-inch sibling are now officially confirmed to be 3000 mAh for the smaller S8, and 3500 mAh for the S8+, which jibes with what we've heard before about the battery compartment of Samsung's fresh new flagships.

The WSJ reported not long ago that Samsung is in talks with Murata to become its third battery supplier for the Galaxy S8 batteries, and, sure enough, the battery packs that leaked weremarked with "Samsung Japan," so the actual design may be coming from Sony's former battery subsidiary that is in the process of being acquired by Murata. Samsung is likely diversifying its battery manufacturing technology, and not taking any chances with the S8 in that regard, after the lessons learned from the Note 7 recall. 

As for the actual battery life out of those two puppies, well, the more frugal tech of the 2960 x 1440 pixels AMOLED display, and the new 10nm Exynos or Snapdragon chipsets have improved the official battery life numbers in comparison with the S7 and S7 edge, but only in certain categories like music playback. For video playback and Internet browsing, the numbers are pretty comparable, while the talk time endurance for the S8 and S8+ is slightly shorter than that of their predecessor:

Galaxy S8
Galaxy S7
Galaxy S8+
Galaxy S7 edge
3,000 mAh3,000 mAh3,500 mAh3,600 mAh
Internet use
3G (hours)
Internet use
LTE (hours)
Internet use
Wi-Fi (hours)
Video (hours)16151818
Audio (hours)67457855
Talk time (hours)20222427

source: Samsung

Related phones

Galaxy S8
  • Display 5.8" 1440 x 2960 pixels
  • Camera 12 MP / 8 MP front
  • Processor Qualcomm Snapdragon 835, Octa-core, 2350 MHz
  • Storage 64 GB + microSDXC
  • Battery 3000 mAh(30h talk time)
Galaxy S8+
  • Display 6.2" 1440 x 2960 pixels
  • Camera 12 MP / 8 MP front
  • Processor Qualcomm Snapdragon 835, Octa-core, 2450 MHz
  • Storage 64 GB + microSDXC
  • Battery 3500 mAh(24h 3G talk time)



1. You_Dont_Say

Posts: 431; Member since: Jan 26, 2015

Samsung Galaxy S8 = EPIC FAIL Samsung fanboys, listen closely. The S8 is not king, nor even close to it. The Samsung S8 has fail written all over it. To think Samsung has the Audacity to charge $750 for a phone that doesn't innovate at all, doesn't even improve upon existing battery life, and limits to 4gb ram cap is PATHETIC. There is NOTHING special about this phone except the bezel-less design, which only makes it more difficult to use and partially makes it 'look cooler'. Stay away from the S8 like the plague.

2. kiko007

Posts: 7506; Member since: Feb 17, 2016

Is that supposed to be clever?

16. ShadowSnypa786

Posts: 593; Member since: Jan 06, 2017

He been commenting on all the S8 stories repeating the same nonsense he was doing before the phone released. This isn't a proper battery test, best thing to do is wait and let GSMArena do their review to see how its stacks up against the S7 and S7 edge.

18. drunkenjay

Posts: 1697; Member since: Feb 11, 2013

3. Sakeem

Posts: 862; Member since: Sep 05, 2012

How did you come to that conclusion when we haven't seen real world performance yet?

7. sissy246

Posts: 7124; Member since: Mar 04, 2015

Because he is a 12 year old troll and made because he will never have the money to get one.

23. TechieXP1969

Posts: 14967; Member since: Sep 25, 2013

Because like PA writers, he's a clueless shill.

4. mahima

Posts: 739; Member since: Nov 20, 2014

this is reverse troll...he post this kind of comment in every s8 article

12. drunkenjay

Posts: 1697; Member since: Feb 11, 2013

If you can't afford it, don't talk.

20. fyah_king unregistered

Who the fook are you???

22. rd_nest

Posts: 1656; Member since: Jun 06, 2010

750 is cheap for me. Here Pixel XL 32GB costs 1000, iPhone 7 Plus costs 1000 (32GB). So if S8 is 750, then I will buy a couple (I will gift 1 to somebody).

24. wrm2013

Posts: 237; Member since: Mar 28, 2013

That new iphone with no headphone jack though, that's innovation

26. kevv2288

Posts: 300; Member since: Jul 30, 2015

So how many of your 15 likes are from yourself hitting the +. My guess 99%

29. techbuttcheex

Posts: 204; Member since: Jul 25, 2015

Smartphone market in general is due for a crash. These prices are unsustainable.

30. Highside

Posts: 197; Member since: Jan 31, 2017

I agree 100% Sealed Battery = FAIL Fragile Glass Rear = FAIL Price = LOL I love my S5 and Note 4. Looks like they're my last new Samsungs.

5. GeorgeAF

Posts: 88; Member since: Feb 25, 2014

I want this one so bad

6. Bankz

Posts: 2550; Member since: Apr 08, 2016

The galaxy s8's seems quite meh tbh. Dunno if it's cause of all the countless leaks but it's just surprising uninspiring to me. Anyway, here's to wishing Samsung the very best. Hoping they knock it outta the park with the note 8.

8. femiRicHkiDD

Posts: 15; Member since: Aug 21, 2015

Because he's so in love with the 750 x 1334 resolution on his iPhone 7, which galaxy s3 had back I'm 2012

11. SonyFindOneDroidple

Posts: 865; Member since: May 11, 2013

hmm the leaks might have huge effect why the announcement seems so-so to me.. The almost the same camera, fingerprint scanner location, very long display which seems off esp with s8+ are not convincing, if not categorically disappointing. Anyway, looking forward to Note 8, which will be my next phone whatever it is

19. drunkenjay

Posts: 1697; Member since: Feb 11, 2013

Comparing the size the my iphone 7 plus. the s8 is a 6.2 inch phone which fits inside a 5.5 inch iphone 7 plus. I dont seem to be bothered with the long display.

13. remixfa

Posts: 14605; Member since: Dec 19, 2008

If it gets that at 2960 x 1440 , it should get phenomenal performance at 1080p.

15. drifter77

Posts: 402; Member since: Jun 12, 2015

I second that opinion. Unless you're into VR 1080p is perfect, and it takes less toll on battery life.

32. mixedfish

Posts: 1560; Member since: Nov 17, 2013

No, Samsungs Amoled needs 1440p resolution to catch up to the sharpness of LCD 1080p.

14. zig8100

Posts: 243; Member since: Dec 13, 2012

Cant wait to get my S8 Plus!

21. mazallah

Posts: 22; Member since: Jul 29, 2016

Already ordered it :)


Posts: 652; Member since: Jun 28, 2014

I wish my LG G5 had half the battery life of these phones.. It was bad enough getting 3 hours SOT out of the box. But after the Nougat update, 2 hours is a miracle even after disabling almost everything on the phone. That is a cold cripple slap in the face. Seeing the direction LG's battery endurance has been heading since the G2, I can finally say this loyalist (since the 2012 Optimus G) would be more likely to buy a Samsung next time.

25. Cat97

Posts: 1933; Member since: Mar 02, 2017

If you want stellar battery life, get an Exynos S7 Edge. You will be amazed.

27. DigitalBoy05

Posts: 278; Member since: Jun 04, 2011

If you don't like it that's fine but at least contribute and explain why. None of this the king is dead and the world is ending nonsense.

28. ibend

Posts: 6747; Member since: Sep 30, 2014

because he hate samsung... did he need more reason than that? :-/

31. ewokuk

Posts: 1; Member since: Mar 30, 2017

The thing worrying me, that everyone seems to have completely missed, is that the device by default is running at standard HD resolution and NOT the QHD resolution of the screen. I can think of one single reason for that....they are using it to fudge the battery life figures to make it look equivalent to the S7. What other reason would they possibly have for gimping the resolution BY DEFAULT? If I am right about that and actually setting it to the native, ADVERTISED, resolution kills the battery vs the quoted numbers then they have been incredibly sly and underhand and they should get completely shafted for it! If they are supposedly attempting to regain trust and then they do that..... I hope I am wrong and running it at the native resolution actually gives the quoted battery life, which is about the same as the S7, but someone needs to do a proper test on this and prove it one way or the other.

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