Samsung Galaxy Note 8 battery life test, real-life impressions and comparison vs iPhone 7+

We've been using the Samsung Galaxy Note 8, the $950 Android super-phone, for about a week now and we have a lot to share, but one thing in particular deserves special attention: the Note 8 battery life.

After all, the Note 8 actually has a smaller battery than the nearly identical Galaxy S8+, so this might have some users worried. The Note 8 ships with a 3,300 mAh battery cell, while the Galaxy S8+ sports a 3,500 mAh battery.

So how does the Note 8 do in real life?

We have some good news: the phone easily lasts a full day of use, no worries. And we also have some not so surprising bad news: its battery life is predictably slightly worse than that of the Galaxy S8+. To back up our claims, we have our battery test scores. For the test, we set the Galaxy Note 8 display to a brightness level of 200 nits, which makes the phone bright enough for indoor use. We then ran a test that taxes all phones in the same way and here is the result: the Note 8 battery lasted 7 hours and 50 minutes.

This is an above average score, but it's still below "great" and it's less than the battery life that we got out of last year's unfortunately explosive Note 7. It's also very slightly less than the score of the Galaxy S8+.

Battery life (hours) Higher is better
Samsung Galaxy Note 8 7h 50 min (Average)
Samsung Galaxy Note 7 9h 49 min (Good)
Samsung Galaxy S8+ 8h (Average)
Apple iPhone 7 Plus 9h 5 min (Good)
OnePlus 5 9h 18 min (Good)
Google Pixel XL 7h 19 min (Average)
LG G6 6h 9 min (Poor)

How does the Note 8 battery perform when compared to other rivals? The iPhone 7 Plus outlasted it by more than 15%, which is a significant overhead, but just about every other flagship had a lower score, including the Google Pixel phones, the LG G6, and others. On a positive note, the OnePlus 5 actually delivered a slightly longer battery life.

Charge times

Another imporant aspect of the battery experience is the time it takes to recharge a phone battery.

The Galaxy Note 8 supports Samsung's Fast Adaptive charging, and it comes with a special wall charger that outputs a ton of power and does not require a proprietary cable, but instead uses the standard USB-C.

Interestingly, despite its smaller battery, the Note 8 takes a bit longer to recharge than the Galaxy S8. It took us 1 hour and 42 minutes to go from 0 to a full 100% on the battery meter. In this aspect, the Note 8 is much better than Apple's iPhones. The larger iPhone 7 Plus lacks quick charging and the battery takes a depressingly long 3 hours and 17 minutes to fully recharge.

Charging time (minutes) Lower is better
Samsung Galaxy Note 8 102
Samsung Galaxy Note 7 96
Samsung Galaxy S8+ 99
Apple iPhone 7 Plus 197
OnePlus 5 99
Google Pixel XL 118
LG G6 97

Wireless charging

The Galaxy Note 8 also supports wireless charging, which requires a separate wireless charger that is not included in the box. Wireless charging is compatible with WPC and PMA standards, but if you do not want to look for a third-party charger, good news is that Samsung also makes a stylish wireless charger that holds the phone up and doubles as a good-looking dock. 

The wireless charger (officially called the Fast Charge Wireless Charging Convertible, model number EP-PG950TBEGUS) is offered as a freebie for those who get the Note 8 in the first month of availability, while otherwise it has a full retail price of $90. That charger also works with othe Qi-compatible devices.

It takes nearly half as long to charge up the Note 8 battery with the wireless charger, so keep that in mind. And if you don't want to spend the big bucks on this new charger, older and still perfectly compatible Samsung-made wireless chargers can be found for less than $40 at Best Buy.

Related phones

Galaxy Note 8
  • Display 6.3 inches
    2960 x 1440 pixels
  • Camera 12 MP (Dual camera)
    8 MP front
  • Hardware Qualcomm Snapdragon 835, 6GB RAM
  • Storage 64GB, microSDXC
  • Battery 3300 mAh
  • OS Android 8.0 Oreo
    Samsung Experience UI



73. LionStone

Posts: 1048; Member since: Dec 10, 2010

Yea...type in U11 and see how an Android flagship is Excellent...twice the res of an iphone7+ and it only best it by 2 min. lol...

70. osterrich21

Posts: 190; Member since: Apr 14, 2017

Iphone lasting more than 9h?What a joke!

64. ShaikhJGI

Posts: 361; Member since: Jan 10, 2014

And if you say me that you will charge your phone overnight anyway then thats the Stupidest thing ever as No manufacturer will advise you to do that.. :)

63. ShaikhJGI

Posts: 361; Member since: Jan 10, 2014

Even if we buy PA's battery tests here, that alone beats the iPhone guys. As per PA Note 8 lasts 75 Mins less than iPhone 7 Plus and iPhone takes 95 Mins more to charge than Note 8 which means Note 8 still has 20 mins advantage over iPhone. Also if we see other side of the coin, Note 8 will get charged twice in charge times of iPhone & will last for almost 16 hours with 2 charges. A long way to beat iPhone..:)

58. ChafedBanana

Posts: 409; Member since: Sep 20, 2011

"The larger iPhone 7 Plus lacks quick charging and the battery takes a depressingly long 3 hours and 17 minutes to fully recharge." LOL!!!!! Who has time for that?

68. mrochester

Posts: 1048; Member since: Aug 17, 2014

I sleep for approximately 8 hours per night so I have plenty of time for charging my phone.

47. mikehunta727 unregistered

I'll say this test is more accurate than the tests off YouTube. Youtube battery test from what I have seen, drains the phones down with Youtube for like 50%. Not very many people watch videos straight like that on their phone for hours on end. OLED's shine in power efficiency when viewing videos vs LCD. LCD is more power efficient everywhere else besides videos, which is a bit more akin to how people use their phone daily(web browsing, text, Snapchat, etc) But realistically it should still have a bit better battery life even outside video viewing

52. Plasticsh1t

Posts: 3109; Member since: Sep 01, 2014

Agreed. All I read here is bitching and crying. These fanboys needs to learn.

54. sissy246

Posts: 7129; Member since: Mar 04, 2015

That's what you do when PA talks bad about HTC. Pot calling the kettle black

69. mrochester

Posts: 1048; Member since: Aug 17, 2014

I’d say any test that skews very heavily towards watching YouTube videos is not a representative test.

45. evo4g63t

Posts: 4; Member since: May 27, 2017

You know it's sad when a battery is considered excellent when it lasts 9hrs with moderate use. It's 2017, batteries should last all day no matter how often you use the phone. I am tired of phones that require mid day charging just to last all day with frequent use. I am also tired of small batteries being used for the sake of thinness. I'll take a slightly thicker phone for better battery life over obnoxiously thin. I certainly am not going to buy a 1000 phone with a non removable battery either. 1000 dollar phone for 2 years of use before it degrades is ridiculous. I am sticking with my v20 for the foreseeable future with the extended battery pack. I can use it and still have 30 to 40 percent left at the end of the day. Can't say that with ANY flagship phone with a non removable battery currently.

40. Smat1234 unregistered

This type of test is heavily affected by the brightness setting on the screen and extremely easy to rig. The author does not even indicate that all of the tested phones were set to the same screen brightness. PA must stop posting this kind of information that pollutes public opinions.

59. Victor.H

Posts: 1117; Member since: May 27, 2011

The author (me) took his time to carefully explain that all screens in our test are set at the same brightness level of 200 nits, but the reader (you) did not bother to read the article and instead went straight to the comment section. Great job!

38. SupermanayrB

Posts: 1188; Member since: Mar 20, 2012

Go to a place that has charging stations for phones (airport, the mall) & look at the phone of the people sitting there or just pay attention at work & listen out for these words: "Do you have an iPhone cable?" I guarantee you they're not trying to sync it with iTunes. That's the real life battery test & results.

32. YeahYeah

Posts: 254; Member since: Mar 16, 2016

When are you gonna publish this?.... Source Sammobile... ''Last week, a video started making the rounds online claiming that the Galaxy Note 8’s face recognition feature can be fooled by a photograph—and guess what? It can’t. Seriously. We tried it for ourselves and were unable to generate the same result. Here’s why it worked in the clip: When a smartphone is on display in a brick-and-mortar store it’s running something called Retail Mode, which makes it easy to trial all the different features on board a handset without having to configure them. The main reason retailers use the often-outdated software is to prevent people from maliciously—or accidentally—locking a demo unit to their face, rendering it useless for all other potential customers wanting to play around with it that day. We replicated all of the steps outlined in the video and even tried using a flat photograph, but to no avail. Each time, our Galaxy Note 8 displayed an alert saying that it was unable to detect a face, instructing us to try again. While we can’t offer up an explanation as to why some news outlets were able to trick their handset with an image, we can honestly say that we weren’t. We’ve reached out to Samsung for an explanation and will update this post if/when we hear back.''

35. ibend

Posts: 6747; Member since: Sep 30, 2014

They won't post something like this.. btw, S8's face recognition been updated since 2 months ago for that issue, and iPhonearena didn't write article about that..


Posts: 2; Member since: Mar 18, 2017

My only issue with these comparison is that you have compared Note 8 with Note 7 , which was recalled. Instead , you should have compared Note8 with 2 year old note 5, which has not only sold 11 million units ( according to Samsung reps themselves ) but also it has aged brilliantly and is still a beast. So in my humble opinion , Don't ignore Note 5 and include in your tests.

28. cmdacos

Posts: 4421; Member since: Nov 01, 2016

You can add in any phone that is previously tested. Note 5 is an option.

36. ibend

Posts: 6747; Member since: Sep 30, 2014

or Note FE..

23. philip_1

Posts: 46; Member since: Jul 28, 2009

In real life and once you start loading your apps and other stuff.. note 8 will last less and less, specially after a couple of months of use when it becomes "heavy". We had this with many Samsung devices so far.. G6 in Real life is a very good performer.. and generally LG phones proven to be more stable so far..Having G6 for a couple of months now I can tell I am impressed. iphone/ipad where always the kings of battery to be honest.. they do what they promise ..

62. ShaikhJGI

Posts: 361; Member since: Jan 10, 2014

Philip this one you totally got wrong. Usually when people buy new phones, they will check all the noops & corners of the phone like, How is the S-Pen working, How is the dual camera's perform, How is 3D touch working, live photos, portrait mode etc etc becoz people are so excited about there new pocket beast that they can't keep it aside. Eventually when that craze goes down, that same beast remains nothing but a status symbol for some, show off for some & really usefull for few of them. Later on all will use its features quite less than in the beginning & get good to better battery life. And coming to your point, Samsung phones this past year or so have really improved on software, battery life & fluidity over the time (See long term reviews of Erica, SuperSaf & MKBHD of S8 & S8+). So your point here is invalid. Great day mate.

71. philip_1

Posts: 46; Member since: Jul 28, 2009

Hey mate, battery life cannot be better in real life, there will always be conditions to impact performance, such as low reception, low wifi signal, smartwatch, etc, plus the fact that the Device as said before eventually will be become heavier from user's apps running in background etc,.As a matter of Samsung devices, I am always buying Samsung or LG flagship devices..LG are more reliable!I trash S3 and Note 3 from sadden death issue.. Anyway Have a good day!

79. phichart

Posts: 335; Member since: May 03, 2014

I got v20 and S7 edge... well V20 is s**t... I am glad that i didn't sell my s7 edge for V20. f**king lag... and horrible battery life..

15. JoshuaDK1984

Posts: 24; Member since: Apr 01, 2017

MrWhoseTheBoss on Youtube made a battery test too with the OnePlus5, S8+, Note8 and S7 and OnePlus held the longest, but second was Note8.

27. Victor.H

Posts: 1117; Member since: May 27, 2011


67. almostdone

Posts: 452; Member since: Sep 25, 2012

Better than Mr iPhoneArena.

14. twens

Posts: 1191; Member since: Feb 25, 2012

Like I said take all note 8 test here with a grain of salt. Go on different YouTube channels to check out filmed note 8 vs iPhone battery test. Don’t rely on this site for a smartphone review before you make a decision. Go to the stores and try them out for yourself. I’ve realize in real life what this site reports is mostly contrary to the real world issue. I bought my iPhone 7+ based on this sites review and what I’m experiencing is totally opposite.

18. nctx77

Posts: 2540; Member since: Sep 03, 2013

Are they comparing it to a new iPhone 7 plus or an old one. You do know it makes a difference right? Also, is it a 7 or 7 plus that they are putting it up against? iPhone 7 plus has been around for a year and the battery life numbers have been consistent. How are they lying?

21. twens

Posts: 1191; Member since: Feb 25, 2012

No one is saying this site is lying. What I’m simply saying is check other sources before you take their test as the ultimate representation of the battery endurance of the note 8.

77. xeroxchap

Posts: 68; Member since: Oct 11, 2016

nctx77 .. why you always crying

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