LG G6 battery life test results are out: can a 3,300 mAh battery handle a 5.7" screen?

The LG G6 is an exciting phone: the first mainstream phone with a 'full-screen', 5.7-inch display, it's actually smaller than last year's 5.3-inch LG G5. This became possible because of the new, taller and narrower, 2:1 display, but including such a bigger display meant LG had one more battery challenge.

A phone's display is usually the number one source of battery drain, so that's why we were curious to see the LG G6 battery life. The G6 features a 3,300 mAh battery, a big increase from the 2,800 mAh cell on the G5. Increasing the battery capacity is a great move on LG's part: poor battery life was the G5's weakest point, and we went into our battery testing with high hopes that LG has improved this year around.

So how is the LG G6 battery life?

Unfortunately, it is nothing to write home about: the LG G6 scores a score of 6 hours and 20 minutes of battery life on our test, slightly better than the G5 and G4. What does that mean for you? We have been living with the phone for the past two weeks or so, and we have found that it gets us through a full day of use and even lasts a bit more, but we have not been pushing it to its limits. If you start playing more games and taking more pictures you might need to recharge before the end of the day, but if you use your phone moderately, you should not worry about getting through a day without a trip to the charger

Battery life (hours) Higher is better
LG G6 6h 9 min (Average)
LG G5 5h 51 min (Average)
LG G4 6h 6 min (Average)
Apple iPhone 7 7h 46 min (Good)
Apple iPhone 7 Plus 9h 5 min (Excellent)
Samsung Galaxy S7 6h 37 min (Average)
Samsung Galaxy S7 edge 7h 18 min (Good)
LG V20 6h 23 min (Average)
OnePlus 3T 5h 41 min (Average)
Google Pixel 7h 45 min (Good)

In our benchmark comparison, you can, however, see that the LG G6 is outlasted by Apple's iPhone 7, the Samsung Galaxy S7 and the Google Pixel. The difference is not huge in some cases, but it is there. Interestingly, the LG G6 lasts almost as much as the earlier released LG V20.

Charging time (minutes) Lower is better
LG G6 97
LG G5 76
LG G4 127
Apple iPhone 7 141
Apple iPhone 7 Plus 197
Samsung Galaxy S7 88
Samsung Galaxy S7 edge 99
LG V20 86
OnePlus 3T 85
Google Pixel 119

The next thing we look when we measure battery performance is charge times: how much time it takes for the in-the-box wall charger to fully charge up the phone's battery. The LG G6 is quick to recharge, but it's not among the fastest: it takes 1 hour and 42 minutes for a full charge. This is slightly faster than the Google Pixel and much faster than the iPhone 7, but it's slower than the S7 and OnePlus 3T.


At the end of the day, we have the following LG G6 battery life testing TL;DR for you:

  • LG G6 battery benchmarks do not impress
  • In real-life, though, it has great stand-by
  • We get one day and even slightly more with average use
  • It is fast to charge, but not the fastest out there

Related phones

  • Display 5.7" 1440 x 2880 pixels
  • Camera 13 MP / 5 MP front
  • Processor Qualcomm Snapdragon 821, Quad-core, 2350 MHz
  • Storage 32 GB + microSDXC
  • Battery 3300 mAh(20.5h talk time)



1. Tyrion_Lannister unregistered

PA's battery test really hammers the SD820 SoC. No one else in their right mind would tell you that the regular iPhone 7 outlasts the S7 edge.

2. Arch_Fiend

Posts: 3951; Member since: Oct 03, 2015

I agree, PA's battery life test isn't as thorough as it should be. I never come here when I want to compare battery life between two devices. Anandtech's test, show the S7 edge(SD820) even beats the 7 plus in battery life so of course the regular 7 doesn't stand a chance.

23. SaRPeR

Posts: 147; Member since: Mar 02, 2017

Even regular S7 beats the iPhone 7 Plus in battery life.

33. cocoy

Posts: 460; Member since: Oct 30, 2015

Or GSMArena's battery test. It is much reliable than PA's test. Most of the time I came here to read debate in comments sections coz i find it funny if two fanboys debate each other

50. mikedemoda

Posts: 128; Member since: Mar 19, 2010

but true life use shows the 7 Plus beats the S7 Edge by a mile...

13. maherk

Posts: 6922; Member since: Feb 10, 2012

Plus what's the point behind this test if we know that it is still running on preproduction software? I will wait for it to get released then I would consider such tests.

18. Tyrion_Lannister unregistered

@maherk For a flawed test, it doesn't matter whether the software is final or not. The results will be worth a pile of crap either way.

17. amasog

Posts: 552; Member since: Aug 22, 2013

Ok. Make your own test and publish it. Make the result as per what you want. Hihihi!

19. Tyrion_Lannister unregistered

@amasog Give me the phones and I will. I know how to write scripts to emulate real world conditions. In fact, i did that on my old blog with the limited devices I had. Don't try to be a smartass. I have sources where I can get more relevant results for these scenarios. It's not like PA test is the only one on the internet.

20. maherk

Posts: 6922; Member since: Feb 10, 2012

He is pleased with seeing the iPhone on top, it doesn't matter how accurate the test is, and that's why he has an issue with our comments. And I get your point, I know it's a flawed test and I've mentioned that before, but my point is that they are making things worse when they are using a preproduction unit to conduct their test.

21. Cat97

Posts: 1920; Member since: Mar 02, 2017

I agree. Not sure what test is this to make a phone last 6-7 hours only on a charge, but my Exynos S7 Edge gets 48 hours of standby routinely, with 5h SOT. I have yet to see an iPhone 7 survive more than 12 hours on a charge. But I agree that the Snapdragon S7 Edge is a lot less efficient, battery-wise.

44. marorun

Posts: 5029; Member since: Mar 30, 2015

Less efficient battery-wise but dont throttle as much on GPU so a better gaming device ( SD820 )

29. bucknassty

Posts: 1350; Member since: Mar 24, 2017

They have explained their test before, but I still don't understand why my friends and my work iphone always struggles in battery life when being used. Standby iphone is very nice, but maybe my s7 Edge would be too with AOD off.


Posts: 1168; Member since: Oct 05, 2015

It seems to me that the reason why SD820/821 doesn't do well in most of the synthetic benchmarks is because it does not perform well in CPU loaded, protracted tests. In real life, I get very good usage out of my 3T. I'm sure yours is seeing good battery time as well, right?

45. marorun

Posts: 5029; Member since: Mar 30, 2015

Good battery life on my LG G5 in real life. charge 1 time do my full day with 4-5 SOT and end up with 20-30% at end of the day. Benchmarks are always biased one way or another.

43. marorun

Posts: 5029; Member since: Mar 30, 2015

Funny i can get 4-5 SOT time on my LG G5. thats playing games as well. So PA need to remake the test its clearly wrong.

49. Highside

Posts: 197; Member since: Jan 31, 2017

LG committed suicide by dumping the removable battery.


Posts: 442; Member since: Mar 15, 2013

Mate 9 still the champ of battery longevity

10. Arch_Fiend

Posts: 3951; Member since: Oct 03, 2015

That would be the Redmi Note 3 on anandtech but if you look on gsm they will tell you its the Lenovo P2, and that the Redmi Note 3 and mate 8 both beat the mate 9 lol. There just isn't an actual battery life champ.


Posts: 1168; Member since: Oct 05, 2015

The Kirin that utilizes A72 cores gets better battery than the one that uses A73 cores even on gsmarena. The gains from A73 from A72 aren't that big, but the real reason for the battery life reduction is the change in GPU cores/clocks. Adreno really is overall one of if not the best mobile GPU when all things are considered.

42. Arch_Fiend

Posts: 3951; Member since: Oct 03, 2015

I know this already my man. I visit anandtech bruh and they have an article on A72 and A73.

4. donrox

Posts: 203; Member since: Jul 18, 2014

I think you need a new battery testing process. You even contradicted your result by stating that "We get one day and even slightly more with average use"

5. manojmcn

Posts: 634; Member since: Jul 16, 2015

Lol.. if your tests and real life stats are contradictory, then fix your tests first before publishing it. I remember the test results from this mag for S7/S7 Edge was way off the mark compared to real life usage and tests by other tech sites.

12. WingMan unregistered

Most new phones have great standby battery life. PA seems to test only screen-on time. Most of the improvements to the OS and chips nowadays are to improve standby time.

6. Clars123

Posts: 1078; Member since: Mar 16, 2015

ohhhhhh..did not see that coming. Then again these are the guys who said the iPhone 7 lasts longer than the S7 and Htc10

7. sachouba

Posts: 266; Member since: Jun 08, 2014

"can a 3,300 mAh battery handle a 5.7" screen?" What's sure is that your rubbish benchmark will not enlighten us on this matter.

8. fyah_king unregistered

I have both G4 and G5. The battery life in the G5 is better. Ya'll need to do something with your battery testing methods.

15. ebilcake

Posts: 1231; Member since: Jul 16, 2016

Results are fairly consistent when looking at the Android devices with Snapdragon 820/821. Not sure if results from Samsung devices are even fair, the aggressive throttling under load makes them irrelevant imo.

9. tango_charlie

Posts: 347; Member since: Nov 16, 2011

The 3300mAh battery is way too small. Period.

37. L0n3n1nja

Posts: 1575; Member since: Jul 12, 2016

Larger than the battery in any phone I've owned, and I get over 24 hours usage, I don't want to own a bulky brick because some people have their screen on all day.

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