The LG G4's battery recharges 23% faster with a QuickCharge 2.0 charger... or a Samsung rapid charger

The LG G4's battery recharges 23% faster with a QuickCharge 2.0 charger... or a Samsung rapid charger
Although LG didn't mention it at the time of the phone's official announcement, the LG G4 does support Quick Charge 2.0. This was confirmed by both Qualcomm – the company behind the innovative tech – and LG several days after the phone's unveiling. But there's a catch. While the phone itself is compatible with Qualcomm's rapid charging technology, its stock charger is not. That's why the LG G4 requires a whopping 127 minutes to have its 3000mAh battery recharged from zero to full. And ain't nobody got time for that.

So, what happens if a Quick Charge 2.0 charger is plugged into the LG G4 instead of the phone's stock one? Well, that's the question we wanted to answer, so we drained the G4's battery and then recharged it using a QC2.0-enabled Motorola Turbo charger. It recharged our LG G4 in 98 minutes, which was an improvement of 23% over the phone's stock charger. In this scenario, the first 10 minutes of charging gave us 15% of battery juice, and after 30 minutes of charging, the battery level indicator was reading 39%. The charging process went at a steady, linear pace until we reached a battery level of 85% in 1 hour and 9 minutes. Around that point, the charging rate dropped – the battery was being slowly topped off.

Out of curiosity, we drained the LG G4's battery again and then recharged it using the Rapid Charger included with the Samsung Galaxy S6. Mind you, Samsung isn't promoting its charger as QC2.0 compatible, yet in the case with the LG G4, it does the trick. In fact, the results were identical – the G4's battery was fully recharged in 99 minutes. 

What's worth mentioning is that both the Motorola Turbo charger and Samsung's Rapid Charger have a maximum output power of 15 watts. Yet some third-party Quick Charge 2.0 chargers deliver up to 18 watts of power, which may allow them to recharge the LG G4 even faster. Having said that, you might consider investing in a powerful QC2.0 charger if you feel like your LG G4 isn't charging fast enough. Here's our selection of the best Quick Charge 2.0 chargers you can find on the market.

Related phones

G4
  • Display 5.5" 1440 x 2560 pixels
  • Camera 16 MP / 8 MP front
  • Processor Qualcomm Snapdragon 808, Hexa-core, 1800 MHz
  • Storage 32 GB + microSDXC
  • Battery 3000 mAh(18.5h talk time)

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26 Comments

1. theguy2345

Posts: 1216; Member since: Jun 24, 2014

These quick chargers are terrible for the phones, especially the ones without a removable battery. I only use them in emergencies. Better preserve the battery than get a bit faster charge. Especially at night, when it doesn't matter because you are sleeping.

3. AmitMajumder

Posts: 178; Member since: May 21, 2012

One can just turn of "use fast charging" option in Samsung devices and the device charges at normal 5V 2amp rate.

28. sgtdisturbed47

Posts: 966; Member since: Feb 02, 2012

Not only can it be disabled, but there's no evidence to suggest that any harm comes to the battery by enabling Quick Charge. This article is funny because the original review for the LG G4 here on PA says it does NOT come with Quick Charge. Now they say it does. Sounds like the reviewer needs to pay more attention to how the phone works instead of slopping together an article.

29. dtam83

Posts: 5; Member since: Oct 10, 2013

there is no evidence on phones, but when using fast chargers on EV's, battery longevity is slightly worse. after 40,000 miles, a nissan leaf had 3% more degradation then one that was not fast charged. as for this article, the G4 didn't not officially announce support until after the release date

5. TyrionLannister unregistered

These batteries are rated for fast charging. And the charging slows down when it hits 85% i.e. when the ions are close and there is danger to the battery.

6. AmitMajumder

Posts: 178; Member since: May 21, 2012

So that's why My note 4 takes so much time to go from 85 to 100. Thanks TyrionLannister!!!

9. KhmerLoveKhmer

Posts: 149; Member since: May 26, 2015

iPhone 6+ battery life span is much more longer. Samsung has no quality in reliability.

18. PapaSmurf

Posts: 10457; Member since: May 14, 2012

My 6 Plus's battery drains a hell lot faster than it did when I first got it. My battery was dead three hours after I took it off the charger last night.

19. AmitMajumder

Posts: 178; Member since: May 21, 2012

I would rather pay to do more with less battery life, than pay to do nothing with more battery life.

22. Shocky unregistered

That's not even true, see below for some numbers, but don't let facts get in the way of your delusions iPhone 6 Plus Web Browsing 9:05h Video Playback 11:15h Galaxy S6 Web Browsing 10:56h Video Playback 12:12h The Samsung Galaxy Note 4 has better battery life then both,

27. vergil9

Posts: 517; Member since: Apr 06, 2015

Ignorance is your new best friend.

10. waddup121 unregistered

nice nice!

16. skymitch89

Posts: 1452; Member since: Nov 05, 2010

What would happen if you were to use the LG G3 charger?

17. buccob

Posts: 2968; Member since: Jun 19, 2012

Now test this with the Z3 Compact

20. ninja_master

Posts: 306; Member since: Feb 27, 2015

They won't

24. buccob

Posts: 2968; Member since: Jun 19, 2012

Hopefully they do because I already got a great score from a standard 2Amp charger... (from 0% to 100% in around 160 minutes) so a QC2.0 must be great...

21. keithtae

Posts: 564; Member since: Mar 25, 2015

Too bad, I still prefer the design of the s6 edge. I want to show off something people will want to know more about, not just a normal phone

30. MichaelRS

Posts: 4; Member since: Apr 29, 2015

Question: Is a QC 2.0 rated charger suppose to work (relatively compared to a conventional charger) just as well whether or not the phone is powered on or off. I'm asking because I've had a car and wall QC charger, for my LG G4, for about a week now and I can't see and difference in charging between either one of those or my conventional chargers when the phone is on and at idle. When the phone is powered off it does charge faster than my conventional charger. Is that how a QC 2.0 is suppose to work, only QC speeds when the phone is powered off? The info "out there" is not very clear or specific on that.

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