yashsingh1/xdaforums huggingface dataset:
[LG G6 Real Life Review] vollmilch:
You're wrong. The important thing is the wattage that is charged into the battery. While youre right that it charges quicker with more amps, like for example 1.5 a at 5v (7.5 watts) than with 1 a at 5v (5 watts), its not the case with a higher voltage as Watts = a*v.

Simply said, quickchargers operate with different voltages and different amps. higher voltage + lower amps, lower voltage+ higher amps.

For example:

5v * 2a = 10 watts

7v * 1.8a = 12.6 watts

12v * 1.2a = 14.4 watts

Phones usually dont use 12v, tablets often do.

Dashcharges like in the OP5 always operate at 5v but with much higher amps (like 5v * 3a = 15 watts)

Cheers :)
[LG G6 Real Life Review] :
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[LG G6 Real Life Review] titomax82:
What is exactly wrong in the "physics" thing I said? As you said in another way of the "formula", Ampere is just Watt/Volt ... so what's the point? Make every experiment you want... and the charging time will always be exactly "battery capacity / charger's ampere"... You just said the same thing of mine... but you're focusing on more then 1 variable, that's way you disagree... or to said it better ... that's way "you think to disagree with me" ahahah
[LG G6 Real Life Review] vollmilch:
Maybe I misunderstood what you were trying to say but I just wanted to point out that your statement "we only have to look at the amps" is wrong. No need to get salty anyway.
[LG G6 Real Life Review] Dethadder:
It's not. It's not charging. By that, I mean it takes more than 3 hours to charge using its own charger and cable that came with it that say "Fast charging" on. It takes forever to charge the phone, it's painfully slow and I don't know why. I bought it few days ago, I live in Europe and I have it connected to cable power extender which is connected to the wall. I don't know how to deal with this, it's not like it's fast from 0-40% and only then it slows, it's slow all the way, from 0-100%. Every time I connect the phone to the charger, I always get the message "Charging Slowly" and then it gives me 3 tips, to rotate the cable (which I've done), to use the charger and cable that came with the phone (which I am) and make sure the charging port is clean (which it is). Any tips?

Edit: When I plugged in the charger, it was at 3%. It's been 5 hours now and it's at 75%. This is fine.
[LG G6 Real Life Review] ObiDanKenobi:
Use the warranty
[LG G6 Real Life Review] Killua96:
If someone with root privileges want to test a possible solution go Here
[LG G6 Real Life Review] ka3bour:
I bought a new unit yesterday and it's charging really slow it's stuck at 230-250 mA for 2 days now I use stock charger and cable... this is not normal at all! :rolleyes:
[LG G6 Real Life Review] ObiDanKenobi:
If it is with screen On, it is normal
[LG G6 Real Life Review] ka3bour:
I measured charging time with screen off it took 20min to charge 10%
[LG G6 Real Life Review] ObiDanKenobi:
Then you have a problem with the ca ble, charger or phone, or any combination of the above. The simplest thing is to buy a quality cable and see if the problem persists. The you can borrow a quick charger from a friend to use the cable. This way you an determine what is wrong.
[LG G6 Real Life Review] ka3bour:
I think the problem comes from the phone... tried with a different cable same result, I tried with my Z5 quick charger same result, tried the LG's charger with my Z5 and it charged at 1560mA... Could it be that the charging port is damaged?
[LG G6 Real Life Review] ObiDanKenobi:
At this point you should think about using the warranty
[LG G6 Real Life Review] alexkalicharan:
I got my G6 two days ago, so far so good. I'm using the upgraded charger that came with my Zenfone 2. I'm not sure if it's QuickCharge compatible but it does output 9V at 2A. I can charge my G6 in 90 minutes, give or take. Battery was at 9% when I started charging at 8:49 AM, reached 100% at 10:19 AM.

I felt that my G4 would get to 60-70% faster than my G6. Then again, the G4 has a smaller battery (300mAH difference). The G4 would also feel a lot warmer when in rapid charge state compared to the G6, sometimes very uncomfortably warm.

A charge time of 90 minutes to 100% is satisfactory for me. The only time my phone ever reaches 100% is if it's charging overnight. Otherwise, I only need it to be around 50-60% after charging when I need a quick mid-day charge. That's enough to last me the rest of the day. The rapid charge to 60% in the G6 makes it convenient.
[LG G6 Real Life Review] arunkr:
Guys need help, my G6 switches on screen while keeping for charging after 2 minutes with the charging sound, before the screen comes on it will show as fast charging but after the 2 minutes, it will just say charging. Always on display, stay awake while charging, etc all are disabled.
[LG G6 Real Life Review] ben cherian:
Guys an update. I just checked with AMPERE app from playstore how quick charge works.

770-780mah current when fone is used or screen on.

1820mah current when screen is off.
[LG G6 Real Life Review] ben cherian:
I hope you are using the standard stock cable and charger came with the box. If yes check for the plug socket any loose contacts. Any micro seconds of disconnecting and reconnecting the fone with charger leads to charging as the fone needs some seconds to detect charger as fast charger
[LG G6 Real Life Review] KingFatty:
The incorrect part of your statement is that you fail to account for the different voltages.

To summarize your incorrect statement, you incorrectly said that only amps matter, so it won't matter whether you charge using 9V@1.8A or 12V@1.8A because both use 1.8A. This is just wrong.

As the other guy correctly stated when he corrected you, it's the total watts that matter. When you charge 9V@1.8A then you have less watts and slower charge compared to 12V@1.8A even though both are using the same current(amps), because the higher voltage means higher wattage even though the amps would be the same.

That's how quick charge works. It changes the voltage (and/or the amps too). So, did you realize, you could even have a charging scenario that uses *LESS* amperage (current) and still charge *FASTER*, so long as the voltage is higher to offset the lower amperage.

Sorry, I'm not usually this abrasive, but it irked me that you made an incorrect statement by disregarding voltage, and then when someone corrected you, you failed to even check your own assumptions and instead dug in your incorrect heels and doubled-down on your incorrectness. But at least we are having a good productive discussion and everyone learns from that.

One thing that bothers me is when I check the wikipedia entry for quick charge, it says that QC 2.0 supports 5V/9v/12V - but QC2.0 has class A and class B. So maybe the bundled charger with the LG G6 is not even QC 2.0 class A, and is merely a lowly QC 2.0 class B? It's clearly not QC 1.0 because it includes 9V and QC 1.0 is limited to only 5V. Yet nothing in the chart of supported voltages on the quick charge wiki page describes a classification that is only 5V and 9V like the way the charger is that is included with the LG G6.

Accordingly, I wonder if the included charger is not compliant with the QC standard? It's like a poor-man's wanna-be QC 1.5? Because it's not fully QC 2.0 because QC 2.0 includes 12 V but the charger does not support 12 V.

See https://en.wikipedia.org/wiki/Quick_Charge
[LG G6 Real Life Review] arunkr:
I'm using the stock cable and charger, for some days now it had been performing as usual, no problem, dunno what the problem was
[LG G6 Real Life Review] titomax82:
It's very long to explain my previous statements in a better way... especially in english.

Maybe I forgot one very important thing: I was talking about LG G6 only and its bundled charger, I was not doing a physics lesson valid in all situations.

For this specific case, only ampere matters, bacause, and this is empirc, the charging time correspond to "battery capacity" : "charger amperes". If you charge at 5V 1.8A or at 9V 1.8A, charging time, for this mobile phone, it's the same. I know that W = V x A ... and at the same time I know that this phone's charging time is so strange... but everyone can measure this himself. Maybe you're saying that this charger is not quickcharge compliant (on mine there's "fastcharge" and not "quickcharge"....)
[LG G6 Real Life Review] KingFatty:
When considering only the bundled charger, how can you draw any conclusions? The problem there, is that the bundled charger will switch from the faster charging rate (using 9 V) to the slower charging rate (using 5V) as the phone reaches full charge. Are you able to somehow see when that transition happens? Maybe you can help me explain the relevance of limiting things to just the bundled charger, because I don't see how that helps explain anything (unless you can see when the transition happens)?

That right there is simply a false and incorrect statement. Although you mention it's empiric and anyone can test it, can you explain that a bit better? The problem is if you just use the bundled charger, you have no way to see when that charger switches from 9V faster charging to the 5V slower charging, so how in the world can someone measure what you are claiming that they can measure?

You claim to know that W = v x A, but I don't understand how you reconcile that with the numbers here. You say that 5V or 9V doesn't matter. Well, using your equation with the two different voltages results in two different watt values: W1 = 5V x 1.8A = 9W, but W2 = 9V x 1.8A = 16.2W. Clearly 9W is not equal to 16.2W.

Charging the battery using 5V mode (9W) for one hour would deliver 9Wh to the battery. Charging the battery using 9V mode (16.2W) for one hour would deliver 16.2Wh to the battery. I simply cannot understand why you think these are both equivalent, can you elaborate? It seems to clearly show that you deliver more energy to the battery when you use a higher voltage (holding the current constant).
[LG G6 Real Life Review] titomax82:
To explain this, can you say which should be the hypotetical cahrging times in both scenarios? Because I've always thought that G6 (or the carger) has a Watts-limiter
[LG G6 Real Life Review] KingFatty:
I think simply asking that question creates an issue - what do you mean by "both scenarios?"

As described earlier, the stock charger that comes with the phone will change how it charges over time. So when you plug it in, you don't know if it's using 9V or 5V.

So if you plug your phone in right now, and your phone is at 2% charge, then it will probably use maximum charging capability, but after a while, it will switch to trickle charge. That's a possible scenario.

Or, you could plug your phone in when it's at 90% charge, and then maybe it will use max charge for a minute, then switch to medium, then trickle? Who knows?

I just can't tell what you mean by "both scenarios" but I'm worried that the very question might be illustrating further misunderstanding, thinking that the charger is somehow only working in one scenario or the other the whole time it's plugged in, which is not the case.

This is new information to me, where did you get this information, can you provide a source so I can investigate further?
[LG G6 Real Life Review] titomax82:
I know that there aren't 2 scenarios and that charging mix is variable in time (sometimes at 5V sometimes at 9V), but I would like to know the "hypotetical" (I repeat) charging times if it was always at 5V or always at 9V. Can you calculate them?

Measuring at which voltage the charger is operating is extremely difficult, but not impossible, because there are some devices that can be placed between the wall-plug and the charger that second-by-second measure A, V or W. But someone should have the time and the strenght to watch at the device-display all over the time... I can't do this for several reasons.

For the Watts limitation, I have to say that it is only an assumption of my brain, nothing scientific, based on some remembrances of what I read somewhere in this forum and in other forums, that parameters related to charging have minimum and maximum settings possible at kernel level.
[LG G6 Real Life Review] KingFatty:
Oh, that should be straightforward to calculate, but recall that there are efficiency losses so these are strictly hypothetical situations (your entire phone and charger and wires would have to be made of superconducting unobtanium and held at zero kelvin for these numbers to work)

I believe we can treat the battery capacity (which is in milliamp hours) as being charged at either voltage, but this may be incorrect assumption because it's conceivable there is some conversion within the phone to a slightly different voltage or current. For example, the phone could receive a 1 amp current at 10V, and convert that to a 2 amp current at 5V before applying it to the battery. Need help here on checking my assumptions for these calculations.

Also, although the battery is rated at 3300 mah, what voltage is used to arrive at the 3300 mah rating of the battery? Let's assume the battery can produce 3300 mah at 5 V. The output voltage of the battery should remain roughly the same, but decrease slightly over time as the battery loses charge.

We need to convert the 3300mah @ 5V battery capacity to watt hours, (to get equivalent units for comparing to the two different wattages of the two charging scenarios), using a site like this: https://milliamps-watts.appspot.com/ to convert mah to Wh.

The battery is 3300 mah, and with the calculator using 3300mah @ 5V, we get 16.5 Wh battery capacity.

Now switching gears, after obtaining the Wh capacity for the battery (but we are making assumptions, assuming a 5V voltage rating was used to provide the 3300mah rating), we now turn to looking at how long the 5V@1.8A charging scenario and the 9V@1.8A charging scenario would take to deliver their watts over time to arrive at 16.5 Wh capacity. Each of those charging scenarios will be in units of watts, which when delivered over time provide Wh, so we can compare to the Wh battery capacity and calculate the times for either approach. First we do the 5V charging scenario, then the 9V charging (while assuming that the same 1.8a current is used in either approach, yet another assumption that may not be true due to the charger):

For the 5V charging scenario, we need to deliver 16.5 Wh to fully charge the battery capacity. The charger at 5V@1.8A produces 9 watts. In order to get 16.5 Wh, you'd then divide 16.5 Wh by 9 W and the result is 1.833 (~1.8) hours.

For the 9V charging scenario, we need to deliver 16.5 Wh to fully charge the battery capacity. The charger at 9V@1.8A produces 16.2 watts. In order to get 16.5 Wh, you'd then divide 16.5 Wh by 16.2 W and the result is 1.019 (~1.0) hours.

So again this is lots of assumptions, but bottom line you'd save 0.8 hours when charging from zero to full charge of a 3300 mah battery rated for 5V. That's 48 minutes savings.
[LG G6 Real Life Review] titomax82:
I like very much your physics knowledge. But tons of calculations just to arrive at 1,8333 hours to charge (you said at 5v) that is simply, vey simply, "battery capacity / charger's ampere" (not thinking to how much volts) = 3300/1800=1.83 hours= 1 hour and 50 minutes.

Now, theory is important, but for me it's useless without empiric confirm. 1h and 50 minutes is exactly the time most of the people are experimenting charging the full battery with bundled charger (assuming not using phone during charging time, otherwise charging becomes slower). So I said that statement ("only ampere matters"), that may seem in contrast with physics, because it is, empirically, in this way. So, "considering

measured

charging time with

bundled charger

", the possible explainations are:

a) it's equal if 5v@1.8a or 9v@1.8a, but I already know you struggle with this...

b) 9v@1.8a is used for such a small amount of time that we can't notice it and it seems like it's always 5v@1.8a;

c) g6 charges only at 5v@1.8a (for some unknown settings or limitations);

d) bundled charger is poor-quality or "lier" and it's only 5v@1.8a (or 9v@"less than 1.8a")
[LG G6 Real Life Review] titomax82:
[MENTION=1543117]KingFatty[/MENTION]

I don't struggle with your maths/physical knowledge. It's right.

The point, when I talk about "empiric" is that I want to have practial and fast conclusion that anyone can use calculating how much time a full charge need. When I say "most of people" I talk about my personal experience, about lots of peole here on xda who are very surprised that "full charge" is somehow slow and doesn't seem "fast" and about 2 of the most know android italian forums where lots of peole wonder for the same thing. Maybe it's a number of records not enough to have a statistic, but it's a relevant number of cases.

One thing I omitted like a stupid is that I'm always talking about "full-charge", because I think (but I'm pretty sure), without any statistics, that most of people are interested in "full-charge" and not in partial-charge. Most of the time people want to know how much time they need to have a full battery before going out (to work, to leisure or to anything else). You're right saying that 0 to 50% is faster than 50 to 100%, and this is because of what you said correctly, very correctly, that is related to the amount of time possibly charging at 9v@1.8; you're right again that we are talking aboout a perfect scenario without any power loss or with perfect conductors, but the real impact on "time" can't modify sensibly or too much the total time; maybe some 9v@1.8a is used during the whole charge and we cannot say how much time it is, but, what it is clear, is that the "full" charge has a time more similar to 1.83h than 1.0185h. I tried with an other charger rated at 5v@1.8a only, and the total time charging has been about 2,08h round, not so different; the help of the new technology is not so good (for me) and is so similar between the to chargers scenarios. So, if someone wants to know how much time a full-charge need, in a fast and simple way, just do that equation and he would have a result very similar to reality(=what matters).
[LG G6 Real Life Review] :
LG and Samsung add their your own tweaks to charging method. That is why Quick charge logo is not printed on charger. On my HTC 10 charger it was clearly printed qualcomm quick charge 3.0.
[LG G6 Real Life Review] KingFatty:
According to LG the phone supports Quick Charge 3.0 "USB Type-C™ Charging Port with Qualcomm® Quick Charge™ 3.0 – reversible design for easier plug-in; fast charging and data transfer" http://www.lg.com/us/mobile-phones/g6#specs

So maybe there is some cost-cutting involved with the charger that is bundled with the phone, such that the charger is not fully compliant?
[LG G6 Real Life Review] ben cherian:
Tried with stock charger and cable. Recorded via Ampere app from play store
[LG G6 Real Life Review] KingFatty:
Is Ampere working properly with the LG G6? The following link says that Ampere does not work properly with the LG G6, but was posted about 4 months ago so maybe Ampere was updated: https://www.reddit.com/r/lgg6/comments/6aqhg1/does_ampere_not_work_properly/
[LG G6 Real Life Review] ben cherian:
Yes it is. Got frequent updates. One update was specifically lg g6 battery bug fix
[LG G6 Real Life Review] lg3FTW:
Need to charge fast while getting ready for activity or going out for the night? Toss your phone on ANY QC cable I airplane mode and be amazed the difference in charging speed. As for me the standard QC 2.0 works well at like 1% a minute in average
[LG G6 Real Life Review] DavDav1990:
First time phone charging from 5%-100% took approx 100 minutes using stock charger
[LG G6 Real Life Review] titomax82:
That's not fast imho. I had that charging time on my old g2 with 3000mAh battery (slightly less than g6) and its normal 5V@1.8A charger (without turning on airplane mode)
[LG G6 Real Life Review] DavDav1990:
Second time the phone charged it took 2 hours from 5%-100%. It doesn't even show "Fast Charging" unlike the first charge.

I have recently installed and used Greenify. Does this have to do with the disappearance of the "Fast Charging" mode?

Any ideas on how to speed up the charging process? 2 hours from 0-100% is not even considered as fast charging though.
[LG G6 Real Life Review] KingFatty:
Do you have any other cables you could try, to see if the fast charging icon appears?

Another thing is to use a toothpick or cloth to try to clean out the USB port on your phone, it might have some lint that is preventing your USB cable from fully inserting into the phone.
[LG G6 Real Life Review] nzkiwiman:
Because my 870DS came from Singapore and has a UK charger which I cannot use in New Zealand, I have been using an Anker Powerport to charge, which works at around 2Amps according to Ampere (not using fast charge); however when connected to my Anker Powecore 15600 battery pack, I only get trickle charge (around .4Amp). Anyone experienced this?

Nothing is wrong with a Powercore as it charges my Huawei P10 Lite at around 2Amps.
[LG G6 Real Life Review] nzkiwiman:
After a week of conversation with Anker Support, they finally mentioned this piece of information after I tested a HTC 10 with my PowerCore and got the same result (trickle charge)

If I am reading this correctly, there is no negotiation of charging speed because the phone has QC 3.0 and the PowerCore does not

I really wish I had known this before purchasing the LG G6 because it is getting very hard to get Anker battery packs into the country.
[LG G6 Real Life Review] santor:
I got a fast charger in the box, so no complaints from me. Charging is very quick indeed.
[LG G6 Real Life Review] KingFatty:
Would the best solution be to find a powerpack that supports QC 3.0?

---------- Post added at 12:53 PM ---------- Previous post was at 12:51 PM ----------

Does your fast charger support all three Quick Charge voltage outputs: 5V, 9V, and 12V?

The charger that came in my box with the phone does *not* include 12V support, only 5V and 9V.

But the Aukey charger I bought separately *does* include support for all three voltages.

---------- Post added at 01:03 PM ---------- Previous post was at 12:53 PM ----------

Does your fast charger support all three Quick Charge voltage outputs: 5V, 9V, and 12V?

The charger that came in my box with the phone does *not* include 12V support, only 5V and 9V.

But the Aukey charger I bought separately *does* include support for all three voltages.
[LG G6 Real Life Review] santor:
I didn't check this until I saw your post. The fast charger in the box that I received only says 5V & 9V.
[LG G6 Real Life Review] thunderbolt9148:
It charges fast

The LG G6 supports both Qualcomm Quick Charge 3.0 based chargers like the one that came shipped with the phone as well as those chargers that support USB Power Delivery.
[LG G6 Real Life Review] fabinhonaka:
That's exactly what I am experiencing, i only get fast charging when the screen is off
[LG G6 Real Life Review] kazmirzleszno:
works on qc3 but at https://download.lineageos.org/h870
[LG G6 Real Life Review] Flashing_Expert:
Charging speed with stock charger can go up to 3200mAh

... Takes around 100 minutes to charge to 100%
[LG G6 Real Life Review] andrew916:
I use normal charger come with LG. speed up to 1800mah-1860mah.

But today i got my Aukey QC3 charger, it goes up to 2540mah.
[LG G6 Real Life Review] lecorbusier:
Phone also supports the by now pretty universal original QC(5v 2A). That's also quite fast, esp. since QC3 seems somewhat retarded compared to QC2. (18w vs 15w, and i'm quite sure the G6 is NOT fully QC2 compliant).
[LG G6 Real Life Review] J-Zzz:
Has anyone's charging speed gone down with the stock charger? 9 times out of 10 when I plug it in I get the prompt that charging is slow. Unplugging and turning and plugging it again no matter how many times the prompt comes up. I tried cleaning the port with water but no luck.

Though on rare occasions the charging is fast but otherwise it's really really slow.