Database Users

Mains adaptor query

Appologies for duplicating this post here and on the accessories forum but needed a quick answer!
Anyone technically minded who can answer this....
I am using a HTC Touch Pro mains charger for my X1 (as it has a longer cable) which charges the X1 fully.
I did notice the back of the X1 getting a little warm, so double checked the outputs on the original X1 charger and the TouchPro one.
X1 = 5v 700mA
TouchPro = 5v 1A
Is this likely to be a problem?

You should definately not mix power adapters like that. On the other hand they both use mini-USB plugs so if they follow the USB standard (Battery Charging Specification) you are okay. The spec allows for up to 1,8 A, but that does not mean the X1 can take it.
I would have rather bought an extension cable for the X1 charger. Then you are safe _if_ anything happens and you damage your X1. :|

If you need a longer cable, just plug in a standard USB extension cable It will work perfectly and you can extend to plenty of meters if you need to.
Regarding the use of the 1A charger, I don't think it will be that much of a problem, but I wouldn't count on it to cause no problems either. The battery getting warm is not that odd when charging, as batteries generally generate heat when they get charged. The fact that it gets warmer with the 1A, instead of the 0.7A charger, is just because you charge the battery quicker, which in turn causes more heat. You should keep it mind though that heat is a bad thing for LiIon batteries like the X1 uses. Having it being warm reduces lifetime quicker then when it's cool.

maedox said:
You should definately not mix power adapters like that. On the other hand they both use mini-USB plugs so if they follow the USB standard (Battery Charging Specification) you are okay. The spec allows for up to 1,8 A, but that does not mean the X1 can take it.
I would have rather bought an extension cable for the X1 charger. Then you are safe _if_ anything happens and you damage your X1. :|
Click to expand...
Click to collapse
Thanks for your help. I assumed - like you - that USB was USB in regards to power output. But I will take your advice and get an extension and stop using the old one.
Cheers
.

What I've seen on battery charging on mobile phones is that they have an internal intelligent charging system, at least the Siemens and Wavecom systems I've been using.
LiIon batteries are normally charged using constant voltage/constant current until a certain voltage level is reached, ~4.2V for 3.6V batteries. Then the charge current is reduced with a constant voltage until the charging current reaches zero. This implies that from a 5V charger there has to be some sort of internal charging system to make it work.
If you get a charger for USB it is the internal system that handles the current rate, not the charger. The specs on the charger shows the maximum current possible, not the charger's constant charge rate.
So if the phone's internal charging system thinks it's ok with 1A it will use it, but as mentioned earlier, it will produce more heat, but with a faster charging.
Though USB charging specs is limited to 1.8A, most charging circuits is possible to set to less current, with some part charging the battery, the rest powering the phone.

on8a said:
What I've seen on battery charging on mobile phones is that they have an internal intelligent charging system, at least the Siemens and Wavecom systems I've been using.
LiIon batteries are normally charged using constant voltage/constant current until a certain voltage level is reached, ~4.2V for 3.6V batteries. Then the charge current is reduced with a constant voltage until the charging current reaches zero. This implies that from a 5V charger there has to be some sort of internal charging system to make it work.
If you get a charger for USB it is the internal system that handles the current rate, not the charger. The specs on the charger shows the maximum current possible, not the charger's constant charge rate.
So if the phone's internal charging system thinks it's ok with 1A it will use it, but as mentioned earlier, it will produce more heat, but with a faster charging.
Though USB charging specs is limited to 1.8A, most charging circuits is possible to set to less current, with some part charging the battery, the rest powering the phone.
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Click to collapse
Thanks very much that's very informative.
I am wondering if the X1 has this internal intelligent charging system you mentioned. Would be useful to know.

Actually the mA ratings are what the charger can deliver. Not what they actually will deliver. A 700mA rated charger will supply up to 700mA if asked for by the device. This is a two way thing. The charger side will never provide more than it's maximum rating, it's a built in safety thing. The charged side should never ask for more than it can handle, providing that it is a well built piece of electronics. I trust the X1 to be well built on this. USB standards rate a maximum of 500mA for high power devices. The X1 does adapt and thus will charge slower.

Glad this is being discussed; as my X1 is a UK model, I don't have a US wall charger.
I found some on monoprice.com, see under the Power to USB section at the bottom:
http://www.monoprice.com/products/subdepartment.asp?c_id=103&cp_id=10311
They have 3 varieties:
High-Speed WALL Power to USB Female Converter (1000mah) - Black
High-Speed WALL Power to USB Female Converter (1000mah) - White
[**cant tell a discernable difference between those two, but one is larger...**]
WALL Power to USB Female CHARGER Converter - Black (500mah)
[**many people complaining about this not charging their devices; either it really does suck or they didnt get one with enough output**]
I WONT kill the phone picking up a 1000mah?
Anyone else in my situation needing a new US charger, this site has great prices on this stuff... these adapters are under 2 bucks, and USB cables are super-cheap too!

About AC adapter and its amperage

Hi all,
Ok, so I finally managed to order a 16Gb Nexus 4 and hopefully it will be with me in 1 week or so.
And I was wondering one thing regarding the AC adapter: I believe (pls correct me if I am wrong) that the original AC adapter’s output voltage is DC 5V, 1.2A.
I will need an extra AC adapter to keep it at work and I was planning to use one of those:
- The Sony Xperia P AC adapter will output 5V, 1,5A
- The Samsung Galaxy S AC adapter will output 5V, 0,7A
It is clear that neither of those 2 chargers will match exactly the specifications of the original Nexus charger (same voltage, but different amperage).
So, here goes the questions:
1) Is there any problem if I use a charger that will output the same voltage but with different amperage?... if not, which one would you use and why?.
2) how the amperage affect to the charging process?.
Thanks all in advance
PS: sorry for terrible English

You can use any charger up to 2 amps.
Sent from my Nexus 4 using xda app-developers app

Evergreen74 said:
Hi all,
Ok, so I finally managed to order a 16Gb Nexus 4 and hopefully it will be with me in 1 week or so.
And I was wondering one thing regarding the AC adapter: I believe (pls correct me if I am wrong) that the original AC adapter’s output voltage is DC 5V, 1.2A.
I will need an extra AC adapter to keep it at work and I was planning to use one of those:
- The Sony Xperia P AC adapter will output 5V, 1,5A
- The Samsung Galaxy S AC adapter will output 5V, 0,7A
It is clear that neither of those 2 chargers will match exactly the specifications of the original Nexus charger (same voltage, but different amperage).
So, here goes the questions:
1) Is there any problem if I use a charger that will output the same voltage but with different amperage?... if not, which one would you use and why?.
2) how the amperage affect to the charging process?.
Thanks all in advance
PS: sorry for terrible English
Click to expand...
Click to collapse
You must use a 5V AC USB Adapter and better no LESS than 1A
for Fast Charge.
AC Adapter I Use:
iPad AC Adapter 5V 2.1A at Work
PlayBook AC Adapter 5V 1.8A at Home 1
Original Nexus 4 AC 5V 1.2A at Home 2.
Our Nexus 4 will Draw around 0.8A when Batt lever at 0% - 80%,
then around 0.5A at 80%-95%, Final State 95%-100% will draw 0.2A roughly.
When 100%, Nexus 4 will use the AC power & the Current "A" show on phone
will like 2mA (0.002A) when idling.
** 1A = 1000mA

As previous poster said, do not go under 1.2amp.
I run the OEM charger in my bed room, a USB charger to my computer, and a 2.1amp charger in the car.

Sfkn2 said:
As previous poster said, do not go under 1.2amp.
I run the OEM charger in my bed room, a USB charger to my computer, and a 2.1amp charger in the car.
Click to expand...
Click to collapse
Why do you say not to go under 1.2A? Charging from a laptop is at .5A. I've been using a 1A charger since day one. Haven't experienced any issues with it.
Charging at a lower amperage shouldn't hurt anything, just charge slower. All you have to do is make sure it's a 5V charger. Amperage shouldn't matter but a lower amp charger will charge slower. As for a higher amp charger, the phone will only draw the amount of power it needs to charge so using 2A charger won't hurt anything either.

Also 2mA is 0.002A not 0.02 A

wilsonlam97 said:
You can use any charger up to 2 amps.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Since the charger doesn't actually regulate the charging itself (the phone does this) it doesn't matter how many amps it can supply, could be 100 amps, no worries. As long as it is 5V, the phone will draw as many amps as it needs.
Since the supplied charger is 1.2A rated, it's fair to assume that the phone will never actually try to draw any more than that, so there will be no benefit in going higher.
Going for a lower current charger will likely extend the charge time.

I use a 2.1 amp daily without any issues.
Sent from my Nexus 4 using Tapatalk 2

Wow guys!!... thanks all for your answers!!
So, if I understood correctly, the amperage will only affect to the charging time, meaning that by using the Xperia P AC adapter (1,5A) the battery will be charged faster that using the Galaxy S one (0,7A)... right?
Pls allow one last question: a few yeard ago, I think I read in some forums that a slower charging process could help to keep the batteries in the best conditions for a longer time... is this still true with modern batteries??
Again, THANKS all for your help!!

Evergreen74 said:
Wow guys!!... thanks all for your answers!!
So, if I understood correctly, the amperage will only affect to the charging time, meaning that by using the Xperia P AC adapter (1,5A) the battery will be charged faster that using the Galaxy S one (0,7A)... right?
Pls allow one last question: a few yeard ago, I think I read in some forums that a slower charging process could help to keep the batteries in the best conditions for a longer time... is this still true with modern batteries??
Again, THANKS all for your help!!
Click to expand...
Click to collapse
Yes, the .7A charger will take a little longer to charge you phone.
On the other answer, I think NO but I'm not as familiar with LiPo batteries. I would venture to say that .7A vs 1.2A (max the phone will draw but I think someone above mentioned it's even less than that when the battery is very low) is not going to make a bit of difference in your battery life.
One thing I do know about LiPo's is you do not trickle charge them. So while plugged in it will charge at the rates mentioned above until full and then it QUITS charging all together. Once the phone discharges the battery to a certain level, it will charge it back up again. Probably at 98-99%.

There may be one other thing to consider when selecting a third party charger. In the Nexus 7, the device looks for pins 2 & 3 (data) of the USB plug to be shorted in order for it to draw full current. If this pins are open (or have a load across them as is the case with iPhone/iPad chargers), the Nexus 7 will assume it is plugged into a computer and limit its draw to 500MA.
Not certain the Nexus 4 behaves the same way but would assume so.

setzer715 said:
Yes, the .7A charger will take a little longer to charge you phone.
On the other answer, I think NO but I'm not as familiar with LiPo batteries. I would venture to say that .7A vs 1.2A (max the phone will draw but I think someone above mentioned it's even less than that when the battery is very low) is not going to make a bit of difference in your battery life.
One thing I do know about LiPo's is you do not trickle charge them. So while plugged in it will charge at the rates mentioned above until full and then it QUITS charging all together. Once the phone discharges the battery to a certain level, it will charge it back up again. Probably at 98-99%.
Click to expand...
Click to collapse
setzer715, thanks for the answer... I think I will be using the Xperia P charger at work...
Thanks all for your help!!

I want to make this case clear. According to my Charging log,
Here is some key point.
Nexus 4 Max Draw Rate at Fast Charge Mode is around 800-900mA,
even you use a Charger that rated at 1A (iPhone Tofu), 1.2A (Original),
1.8A (Playbook), 2.1A (iPad).
Fast Charge Mode must be with Charging Cable with 2&3 pin Shorted,
or the charger itself have the 2&3 pin already shorted.
Therefore, 1A is a Sweet spot for getting Charger & Charging Time for
Li-Po/Li-Ion/Ni-MH Batt charging.
If you use under 1A Charger, eg 700mA or 500mA, it will take much longer
to charge the batt but no harm as well. Just too slow only.

The stock charger that came with my phone sucks, I use one from my epic 4g touch (gs2)and it charges much better
DEVICE: Nexus 4
KERNEL: Franco r95
ROM: PROJECT Extinct Life Event

jlear3 said:
The stock charger that came with my phone sucks,
Click to expand...
Click to collapse
Why you say so...? What's wrong with it...?

Talon88 said:
Why you say so...? What's wrong with it...?
Click to expand...
Click to collapse
Left a phone on a charger all night with a long (10ft) cable and it couldn't even charge the phone over night. I know a 10ft cable will slow things down but my gs2 plug has no problem charging my phone. Search around and you'll find a few fail stories about the stock LG charger.
Sent from my Nexus 4 using Tapatalk 2

[Q] What charger specification is best for Lg G2?

hello;
i have just bought LG G2 (F320L), i have noticed that if i charge the phone with a charger having 1amp output specification it charges rapidly.
So the question is that what charger output specifuication is best for Lg G2 which may charge the phone rapidly but does not damage the battery.

U can use a 16a charger if u want. The charging circuits in the phone handles the input so max the phone will use is 1.6a. It's li-po cells the phone has som advance circuits handling the balance charging of the cells. Recommended is 2a charger but don't forget the cable.
If u use a chappy cheap cable it won't go above 0,3a use a premium and u whill have a 1.6a charge. 1a is to little and to slow.
The phone handles the power to optimize the charging so don't be afraid to use a powerful charger just make sure it's 5v and above 1.6a. If u bye a 1.6 the charger itself will be on max load and generate a lot of heat with could damage the charger and the phone so go with 2a and a premium cable

I'm pretty sure the post above's first reference was meant to say 1.6A and not 16a (the second reference was corrected). 16A wouldn't necessarily hurt the phone actually since current aka amperage is pulled and not pushed - the device would still only take what it needs as long as the 5VDC is solid.
Anyway, enough rudimentary electronics and electrical theory...
Any modern USB wall charger will work with the G2 without issues, obviously if you can get and use one that provides a higher level of amperage/current it will charge the G2 faster up to about 1.6A as mentioned above. The factory charger included with G2 smartphones is designed to provide 1.8A but the G2 won't necessarily pull that much - the .2A is a little headroom and the charger doesn't "stress" as much to provide the 1.6A.
Lower amperage/current chargers just mean it takes longer to charge the G2, basically. As it has a 3,000 mAh (that's 3A for the record) that basically means with a 1.6A charger attached and the device powered off and charging exclusively you'll get a full charge in just under 2 hours from a near-empty state - if there's a charge on it already then it'll charge at roughly 1% every 2-3 minutes, maybe a touch more if the G2 is powered on and charging.
Either way, again, any modern charger will be fine. Try to get at least a 1A model from whoever, and avoid really cheap ones that can't do 1A minimum. If it's a brand name charger (Apple, Samsung, LG, Motorola, BlackBerry, etc) you'll be fine.

maydayind said:
U can use a 16a charger if u want. The charging circuits in the phone handles the input so max the phone will use is 1.6a. It's li-po cells the phone has som advance circuits handling the balance charging of the cells. Recommended is 2a charger but don't forget the cable.
If u use a chappy cheap cable it won't go above 0,3a use a premium and u whill have a 1.6a charge. 1a is to little and to slow.
The phone handles the power to optimize the charging so don't be afraid to use a powerful charger just make sure it's 5v and above 1.6a. If u bye a 1.6 the charger itself will be on max load and generate a lot of heat with could damage the charger and the phone so go with 2a and a premium cable
Click to expand...
Click to collapse
thank u for quick reply...
br0adband said:
I'm pretty sure the post above's first reference was meant to say 1.6A and not 16a (the second reference was corrected). 16A wouldn't necessarily hurt the phone actually since current aka amperage is pulled and not pushed - the device would still only take what it needs as long as the 5VDC is solid.
Anyway, enough rudimentary electronics and electrical theory...
Any modern USB wall charger will work with the G2 without issues, obviously if you can get and use one that provides a higher level of amperage/current it will charge the G2 faster up to about 1.6A as mentioned above. The factory charger included with G2 smartphones is designed to provide 1.8A but the G2 won't necessarily pull that much - the .2A is a little headroom and the charger doesn't "stress" as much to provide the 1.6A.
Lower amperage/current chargers just mean it takes longer to charge the G2, basically. As it has a 3,000 mAh (that's 3A for the record) that basically means with a 1.6A charger attached and the device powered off and charging exclusively you'll get a full charge in just under 2 hours from a near-empty state - if there's a charge on it already then it'll charge at roughly 1% every 2-3 minutes, maybe a touch more if the G2 is powered on and charging.
Either way, again, any modern charger will be fine. Try to get at least a 1A model from whoever, and avoid really cheap ones that can't do 1A minimum. If it's a brand name charger (Apple, Samsung, LG, Motorola, BlackBerry, etc) you'll be fine.
Click to expand...
Click to collapse
thank u for making it clear,
is there any way to measure output of any charger?
i know its not related here but just for fun.:laugh:
currently i am charging my G2 with 1A charger but it takes so long to reach 100% charge, may be about more than 4 hours.

Actually I meant 16a.... Just get a 2a charger and not a cheap one.. Expect to pay 20$

maydayind said:
Actually I meant 16a.... Just get a 2a charger and not a cheap one.. Expect to pay 20$
Click to expand...
Click to collapse
hmm.. u are right.
one should go for original branded charger not chinese one..:laugh:

askfriends said:
hmm.. u are right.
one should go for original branded charger not chinese one..:laugh:
Click to expand...
Click to collapse
Once I ordered a 2a charger from China.. Output was 200mah and it almost melted. 2$
U can measure how mouth the charger provide.
Easy way is to use a app in you phone. But not 100% accurate.
Hard and accurate way is to use a USB extender cable that u cut the + cable and use a ampere meter. But u have to use a high end cable for that and u don't want to cut a perfect god cable in half
So I recommend this app https://play.google.com/store/apps/details?id=com.manor.currentwidget

maydayind said:
Once I ordered a 2a charger from China.. Output was 200mah and it almost melted. 2$
U can measure how mouth the charger provide.
Easy way is to use a app in you phone. But not 100% accurate.
Hard and accurate way is to use a USB extender cable that u cut the + cable and use a ampere meter. But u have to use a high end cable for that and u don't want to cut a perfect god cable in half
So I recommend this app https://play.google.com/store/apps/details?id=com.manor.currentwidget
Click to expand...
Click to collapse
thank u so much for this tip, i am going to test it now..

Charger Disappointment

Any one Disappointed with the charger they included with the Pure. The non removable cord just sucks and a poor choice in my opinion

I'm more disappointed at the size of the wall wart. They could have made more friendly to other power strip users.

razor237 said:
Any one Disappointed with the charger they included with the Pure. The non removable cord just sucks and a poor choice in my opinion
Click to expand...
Click to collapse
Pretty sure they did that so you couldn't just stick any usb charging cord in their...it'd most likely fry it.

The disappointing part is the my other cords not working with Android auto. Luckily I have a nexus 6, and the cord with its charger works.
Sent from my P01MA using Tapatalk

brholt6 said:
Pretty sure they did that so you couldn't just stick any usb charging cord in their...it'd most likely fry it.
Click to expand...
Click to collapse
I guess that could be a reason but highly doubt anything would be fried. Ive been using a nexus 6 turbo charger and before that i was using a note 4 charger to charge multiple android/apple devices without issue. This just limits what i can charge on a single charger now need a second lol

razor237 said:
I guess that could be a reason but highly doubt anything would be fried. Ive been using a nexus 6 turbo charger and before that i was using a note 4 charger to charge multiple android/apple devices without issue. This just limits what i can charge on a single charger now need a second lol
Click to expand...
Click to collapse
If you plugged in a charging cord that can't handle the increased power it sure could fry the cord. I feel ya though...it would be nice if it were a USB cord.

I'm glad it looks different.... My son knows NOT to plug his HTC M7 into this charger.
I can see if this was someones first Android, the lack of a micro-USB for data would be frustrating, but I have about 5 of these in my desk drawer and throughout my house and office, so it doesn't bother me.

Also having a fixed cord means you don't pulg some 'slow' cable in and not get any benefits. Out my 8-10 micro USB cables, only 2-3 get a decent charge speed.

tele_jas said:
I'm glad it looks different.... My son knows NOT to plug his HTC M7 into this charger.
I can see if this was someones first Android, the lack of a micro-USB for data would be frustrating, but I have about 5 of these in my desk drawer and throughout my house and office, so it doesn't bother me.
Click to expand...
Click to collapse
If a device that does not do Turbo Charging is connected, the charger should automatically adjust and charge it at regular speed. At least, that's what it is supposed to do. The Turbo Charger is supposed to be the single charger for all types.
Sent from my Nexus 10 using Tapatalk

Darnell_Chat_TN said:
If a device that does not do Turbo Charging is connected, the charger should automatically adjust and charge it at regular speed. At least, that's what it is supposed to do. The Turbo Charger is supposed to be the single charger for all types.
Sent from my Nexus 10 using Tapatalk
Click to expand...
Click to collapse
Good, because I know I'll find his phone on that charger some day

I still have my galaxy s6 nexus charger that is a fast charging and it seems to work fine with turbo charging
Sent from my LG-H345 using XDA Free mobile app

I think the reason they made the cable fixed is because a lot of cheaper usb cables use very thin wire gauges. Since this charger puts out a lot of current at varying voltages, it's very possible for a thin cable to overheat easier and catch on fire. And my guess is, they didn't want to take any chances

How do we determine if turbo charger is ongoing? I mean are there any indication? Coz when I plug in the TurboCharger that comes with it, sometimes TurboPower Connected shows at the bottom of the screen, sometimes not. Then when I check it on the Status, it says Charging over USB, not Charging over AC? Could be that my unit is defective? perhaps the charger? or the battery?

DrearierJester1 said:
How do we determine if turbo charger is ongoing? I mean are there any indication? Coz when I plug in the TurboCharger that comes with it, sometimes TurboPower Connected shows at the bottom of the screen, sometimes not. Then when I check it on the Status, it says Charging over USB, not Charging over AC? Could be that my unit is defective? perhaps the charger? or the battery?
Click to expand...
Click to collapse
I've got the same issue going on. My replacement from Amazon will be here Tuesday so I'll have time to mess with both and see if its the charger or what. Currently my turbocharging is hit or miss.

DrearierJester1 said:
How do we determine if turbo charger is ongoing? I mean are there any indication? Coz when I plug in the TurboCharger that comes with it, sometimes TurboPower Connected shows at the bottom of the screen, sometimes not. Then when I check it on the Status, it says Charging over USB, not Charging over AC? Could be that my unit is defective? perhaps the charger? or the battery?
Click to expand...
Click to collapse
I have this issue sometimes to. So if I need to know if im charging at turbo I use an app from the app store to see if states I'm turbo Charging or not. In the Charging screen it will say "normal or Turbo"
https://play.google.com/store/apps/details?id=com.gombosdev.ampere

DrearierJester1 said:
How do we determine if turbo charger is ongoing? I mean are there any indication? Coz when I plug in the TurboCharger that comes with it, sometimes TurboPower Connected shows at the bottom of the screen, sometimes not. Then when I check it on the Status, it says Charging over USB, not Charging over AC? Could be that my unit is defective? perhaps the charger? or the battery?
Click to expand...
Click to collapse
You can use a USB voltage/current indicator device to see it directly. I use one that displays voltage and current simultaneously, it cost about $10 on Amazon.
The Qualcomm QC 2.0 (which Motorola terms "TurboPower) spec is 5, 9, 12, and 20 volts, with up to 2 amps plus at each voltage. The QC 2.0 chargers I've tested including the Motorola charger included with the XT1575, range up to 9V and about 2+ A at 9V, with the higher voltage/amperage when battery is discharged to a lower SoC.. Haven't seen 12V or 20V, I think those only come into play when battery is discharged to nearly zero SoC.
Agree the reason the included charger has cable attached may be to ensure adequate wire gage. Too-thin wire will increase voltage drop across cable thus lengthening charge time in higher power modes. But the design here uses higher voltage to keep current down around the same 2A max current of USB 2.0 chargers, so cable heat will not be a problem with any old USB cable.
I will attest to the benefit of QC 2.0. I thought it was a useless gimmick until I started using it. It does effectively compensate for mediocre battery capacity.

My "Turbo Charging" icon displays properly, but doesn't charge very quickly if connected to a cheap extension cord.
Plugged into the wall, the charging Stull doesn't impress me that much
Sent from my XT1575 using Tapatalk

DrearierJester1 said:
How do we determine if turbo charger is ongoing? I mean are there any indication? Coz when I plug in the TurboCharger that comes with it, sometimes TurboPower Connected shows at the bottom of the screen, sometimes not. Then when I check it on the Status, it says Charging over USB, not Charging over AC? Could be that my unit is defective? perhaps the charger? or the battery?
Click to expand...
Click to collapse
It's defective. Call moto they will replace it for free. Just have to send copy of purchase receipt. Had the same issue.

The charge rate depends on how discharged the battery is when connected to charge.
More discharged (lower SoC, State of Charge) will drive a higher charge rate.
As to the difference between this Motorola TurboPower (aka Qualcomm Quick Charge 2.0), vs. other phones:
I've measured up to 1.4 amps at 5V nominal on other phones, that is about 9 watts charging power. That is max charge rate, with a very discharged battery. As the battery charges up closer to fully charged, the charge rate (power) is reduced. Total charging time from fully discharged to fully charged would be about 4-5 hours, give or take, for a typical cellphone battery.
For comparison, the QC 2.0 measurements I made with the MXPE: Up to 2.2 amps at 9V nominal with a phone battery discharged to about 40-50%. That works out to about 20 watts charging power. As with other Li-Ion battery charging systems, this also declines as the battery approaches fully charged. Total time to charge, from fully discharged to fully charged will be about 2-3 hours, give or take.
So the marketing claims about QC 2.0 are about right: A 75% improvement over conventional charging systems.
The biggest gains come when charging batteries discharged to lower SoC. If you are comparing charge rate/time of batteries discharged to only, say, 70-80%, you will not see as much of a difference with QC 2.0.
I'm not a QC 2.0 marketing shill, mind you. I pretty much ignored it, before buying the phone. But for this phone, QC 2.0 actually does a good job to compensate for the mediocre battery. I can run the battery down to 40-50%, put it on QC 2.0 charger in my car for my 30 minute commute, and it is charged to around 80+% when I arrive at my destination. There are a lot of QC 2.0 certified aftermarket chargers out there too, Qualcomm did a lot of work on the front end as part of bringing it to market. (Just make sure any AC charger is UL listed or equivalent, if you care about safety.
Caveats on cables: The cable does make a difference at higher charge rates. Thinner gage wire will impose a greater voltage drop at higher current, this will reduce power and thus increase charge time.
Typical USB cables are AWG 26-28. You can buy 20, 22, and 24 AWG USB cables. Some cables advertise heavier (22-24) gage wire for the power leads with standard (26-28) gage wire for the data leads. The aftermarket QC 2.0 AC chargers I bought listed their included cables as 20 gage.
Get the heavier gage if you want full QC 2.0 charging.

soufdallas said:
I still have my galaxy s6 nexus charger that is a fast charging and it seems to work fine with turbo charging
Sent from my LG-H345 using XDA Free mobile app
Click to expand...
Click to collapse
Just to check did you use S6 original charger ? And does it charge same with the turbo power charger provided by moto?
Sent from my Moto X Pure (2015) via Tapatalk

G5 charging data with QC2.0 and QC3.0

There's a wall of text below, but you can skip all that here and just soak in my answers to some general interest questions. My data is presented below in case you want to bore yourself with the details.
See post #7 for QC3 data http://forum.xda-developers.com/showpost.php?p=66646418&postcount=7
1. Does using a micro-USB to USB-C adapter impede charging amperage, as measured by the Android OS?
No, actually not significantly at all. I'm somewhat surprised by this.
2. Does the LG charger work as fast as a certified QC2 charger?
Yes, pretty much.
3. Does AOD affect charging rates? With QC2, the amperage drops significantly if charging with the screen on, using the phone, etc. AOD probably is different, so let's prove it.
AOD does NOT appear to affect charging rates, though if the phone is charging in a bright environment it might.
4. What are some standard temperatures in these scenarios and at rest?
During charging, the highest my phone hits is ~31-32oC. With it plugged in but not delivering any amperage, it cools to ~23oC. At rest, unplugged, depending on ambient temps, it varies anywhere in the 20s.
5. What amperage does QC2 provide at max?
~3000mA, if the battery % is low enough. And not for very long. For comparison, on my G4, the max was about ~2400mA on QC2, 1800mA with a non-QC charger.
EDIT: I've found that the Android OS cannot accurately list amperage numbers. I think this is because it presumes all input will be at 5V. With QC2 and QC3, this is no longer the case. With my USB multimeter and a QC2 charger, the max amperage is ~2.4A, which slowly drops as the charging % increases.
6. How long does it take to fully charge the G5?
On QC2.0, 1 hour 20 minutes, from 0 to 100%.
There's been some discussion regarding charging rates and charging adapters on our newly released G5s. In the US, on T-Mobile, the phone comes with a QC2-style charger, "Fast Charge." I have read this is not exactly the same an official certified QC2 (I don't know how accurate that is though).
The QC2 standard supports 4 different modes, 5V/2A, 9V/2A, 12V/1.67A, and a 20v option. For comparison, QC3 has dynamic voltage, going from 3.2v - 20v.
The 'fast charge' adapter provided by LG supports the 9v and 5v modes, though the amperage is listed as 1.8A:
9.0V @ 1.8A or
5.0V @ 1.8A
In addition to the LG stock adapter, I also have a Tronsmart QC2 charger which is rated at 5V/2A, 9V/2A, and 12V/1.5A. http://www.amazon.com/Updated-Versi...direct=true&ref_=oh_aui_search_detailpage#Ask
In addition to the stock LG-provided USB-A to USB-C cable, I have some TechMatte micro-USB to USB-C converters, Benson approved. Everyone invested in Android has tons of micro-USB cords, but USB-C not so much. These cheap adapters help with the transition. They are the #1 sellers on Amazon and available here:
http://amazon.com/TechMatte-Connect...&redirect=true&ref_=oh_aui_detailpage_o05_s00
With my 2 chargers and 2 cable set ups, I attempted to systematically document the charging using Battery Monitor Widget Pro (BMW Pro), a great app because it will log a host of stats with no user intervention. (This may not be as accurate as someone using external equipment like a Charger Doctor, but it's good enough for our purposes).
First, some general observations. The first day I had the G5 I did not activate the SIM, nor did I install all my apps. So overnight, it sat connected to wifi but not doing much else. Doze was able to get an impressive -5mA drain for much of the night. Not such a surprise since it wasn't trying to do much. This is without AOD.
Second, when the phone was going through its initial re-installation of my dozens of apps, it ran up to ~40oC. I don't think this is surprising, but it was good to nail down a number.
Third, the voltage tops out at 4400mV. The charger keeps drawing a decent mA for ~40 minutes after it hits 100%. Maybe some additional top-off juice?
Methodology - No phone interaction during the relevant measurement time. Kept whatever other background apps running. BMW Pro logged measurements every 10 minutes. Connected to wifi.
Scenario A - QC2.0 Tronsmart charger with LG-supplied USB-C cable. I would expect this to be the fastest since the charger has 3 modes to choose from (though the wattage from the 12V and 9V is technically the same) and there is no adapter to flow through.
This charging cycle data was collected after I ran my battery completely down. I then rebooted and plugged in the charger asap. This data shows the max amperage to be ~3000mA. This slowly decreases over time.
A simpler read of the charge rate data:
18% @ 10 min, 3063 ma
38% @ 20 min, 2866 ma
57% @ 30 min, 2653 ma
72% @ 40 min, 2025 ma
84% @ 50 min, 1484 ma
92% @ 60 min, 974 ma
97% @ 1:10, 538 ma
100% @ 1:20, 437 ma
Scenario B - Always on display with Tronsmart QC2.0 and USB-C cable. Does AOD change anything from Scenario A?
One thing I noticed is that the AOD is responsive to ambient lighting! So that definitely could alter whatever charging curve we record. This cycle was initially started at 0% in a room with some fading sunlight but no direct illumination. This run was hampered by the phone shutting down from a low battery at the very beginning of the cycle despite being plugged in! Maybe there was too much current demanded by the phone as it booted up and with the AOD on. So this run necessitated starting at ~2%. Hence a 2% 'bump' in the early data points.
Transcribing the data:
21% @ 10 min, 3017 ma
40% @ 20 min, 3065 ma
60% @ 30 min, 2654 ma
74% @ 40 min, 2022 ma
86% @ 50 min, 1482 ma
93% @ 60 min, 975 ma
97% @ 1:10 min, 537 ma
100% @ 1:20 min, 399 ma
Once again it takes 1:20 for a full charge. Despite the 2-3% variability on the lower end, the higher data points basically match Scenario A's. So I would conclude having AOD on does not affect charging times, though that could change if the phone was in a bright environment.
Scenario C - "Fast charge" adapter provided from LG, with micro-USB to USB-C adapter. I would have guessed this would be the slowest charge.
Starting amperage here was again ~3000mA. I didn't start this cycle at 0%, probably more like 25%, but the charging percentages coincidentally lined up remarkably well for a good comparison. (I'd want a 0% start cycle to really confirm this data which I may add in the future).
38% @ 10 min, 3065 ma.
58% @ 20 min, 2654 ma
72% @ 30 min, 2021 ma
84% @ 40 min, 1479 ma
92% @ 50 min, 974 ma
97% @ 60 min, 664 ma
100% @ 1:10 min, 419 ma
So even though the charging started at 25% battery (so obviously the time measurements can't line up), the % charged sample points line up for nearly direct comparisons to Scenario A. At each battery %, the mA are nearly identical. So I'm concluding there's very little mA loss from the adapter.
You might argue for 2 other scenarios here for full comparison, the QC2.0 charger with the adapter and the LG charger with the USB-C cable. Maybe in another update. Currently, I think Scenario A and C here would be the fastest and slowest, respectively, at charging, so showing there is no difference at the extremes makes the other 2 scenarios less important.

If you get a chance, can you try with screen on & verify if you see what I've found that QC3 charges then at 1A & QC2 at 0.3A above 35c & 0.6A when cooler than 35C.
If so, it confirms that the real tangible benefit of QC3 is if you charge with screen on frequently, eg in a car would see a big boon.
Sent from my LG-H850 using Tapatalk

seems strange they have stepped away from the usual cc/cv li charging routine. is this a QC change?

I'm still in the midst of collecting data for the next presentation. There are a lot of permutations to go through, with a couple of cables and chargers.
In the meantime, I did confirm @stuart0001's observation that with the screen on, QC3.0 charges at ~1000mA, seen below (yellow band means screen on, green means AC power charging):
I didn't charge it all the way, just for ~30 minutes, but each measurement during that time did show the same charging amperage.
Also to add thoroughness, I have ordered a USB current/volt passthrough meter to more accurately report what happens.
More to come!

i find that the cheap as chips Samsung fast adaptive (2we version) charger you can get for around £5 on ebay works perfectly with the G5 and it recognises it as a fast charger.

waylo said:
I don't have a QC3 charger and I am debating if it is really worth it.
Click to expand...
Click to collapse
It's easier on the battery so you might get more life out of it.
QC2 charges as fast as it can then slows.
QC3 charges as fast as the phone will allow.
This can have a bearing on battery longevity. How much longer is debatable since you're still using QC which will be more stressful than non QC. The stock charger might not be QC but it is a fast charger and 1h30 is about std to from from empty to full with it.
See this post
less than a year and its replace battery time. Fortunately, not a big deal on LG's

QC3.0 data!
I have been working with 2 QC3.0 wall chargers with USB-A ports over the past couple of weeks. I’ve also purchased a USB voltmeter/ammeter to help with more measurements to understand our charging capabilities.
One charger is the ChoeTech QC3.0 18W USB Wall Charger, available here:
http://amazon.com/Charge-Charger-Co...&redirect=true&ref_=oh_aui_detailpage_o02_s00
The other is the Tronsmart WC1T 18W USB Wall Charger, available here:
http://www.amazon.com/Tronsmart-WC1...rue&ref_=ox_sc_sfl_title_1&smid=ALTVS0Q5KJ7M3
For full disclosure, I received both as free retail products courtesy of each company. They were both delivered via Amazon so they are the same as you’d get if you ordered them yourself.
I purchased for myself a very cheap USB multimeter, available here: http://www.ebay.com/itm/400963912153
It does okay. I then purchased a more reputable Drok multimeter, available here: https://www.amazon.com/DROK-Multime...true&ref_=ox_sc_act_title_1&smid=AFHAE9RJVUMB
Finally, ChoeTech provided a fairly capable USB multimeter of their own manufacture for my testing purposes.
Once again, my talking points first. Then a bunch of nitty gritty details afterwards if you so care.
1. Both QC3.0 chargers are made well and supply variable voltage, the main difference between QC3.0 and QC2.0.
2. The charging times for QC2.0 and QC3.0 are nearly identical!
3. The voltage used to attain these charging times, however, is much lower in QC3.0 than QC2.0. This will help with battery longevity.
4. We do NOT get the 80% in 35 minutes charging that is sometimes touted in QC3 ads. More like 65%. There are some reasons for this.
5. USB-C specification compliant USB-A to USB-C cables DO NOT limit our QC3.0 phone to 5V and 2.4A. This is safe per Qualcomm.
6. Our G5 phones seem to like ~6.5-7.0V charging voltage when used with a QC3.0 adapter. With our LG QC2-ish fast adapter it stays around 9V the whole time.
First, some relevant technical info re: USB-C standards vs QC3.0 charging.
QC3.0 is by definition not compliant with USB-C standards, because variable voltage is not allowed by the USB-C specification. So Nexus USB-C’s charging, which is adherent to USB-C spec, is not the same as Qualcomm QC3.0. You may have heard of Benson Leung, the Google engineer, who has set out to test USB-C devices and accessories. He does not endorse the G5 or the HTC 10 because they do not completely adhere to USB-C spec, but rather Qualcomm’s QC3.0.
Just because the cables are not USB-C spec does not mean that they are unsafe. To me, it really just means that USB-C spec devices may not be able to properly draw current from a power source when using a non-spec USB-C cable, which could damage the power source. Not exactly relevant to Qualcomm’s QC3.0. In fact, Qualcomm put out a statement to qualify this: http://www.androidcentral.com/qualcomm-addresses-usb-type-c-and-quick-charge-30-compatibility
The USB-C specs become a bit relevant when talking about USB-A to USB-C cables and adapters. Due to the circuitry required to make these spec, these cables and adapters are limited to 5V @ 2.4 A when used by USB-C spec devices. All the ones that Amazon sells now are USB-C standard compliant.
Based on my testing, however, this limitation does NOT extend to QC devices. We definitely get > 5V on my voltmeter testing. This was using both the LG-supplied USB-A to USB-C cable, as well as a Benson-approved USB-A to USB-C cable. The amperage measured with the USB volt/ammeter does not typically go >2.5A however. This may be more a reflection of the wattage rating of the chargers. They top out at 18W, and wattage = voltage * amperage. The top amperage their stats spout is 3A.
With the supplied LG fast charger (QC2.0-esque), it will hang out at 9V the entire time with the amperage starting out around 2A and then dropping as the battery fills.
I had stated previously in many places that the amperage tops out around ~3A early in the charging process, which is from data collected via the app Battery Monitor Widget (BMW). This is incorrect, due to the way the Android OS reports amperage. I have been informed that the Android OS amp data is based on 5V charging, so anything different from that (as we would see on QC2 and QC3) can result in erroneously high amperage readings.
I do not know if the LG supplied cord is spec because I do not have the equipment needed to test it (basically just a Nexus and the CheckR app). But I will be incorporating it into our test data to show you how it compares.
Here's a snapshot of the relevant stats printed on the adapters, with the Tronsmart on the left and the ChoeTech on the right:
One notable difference is that on the Tronsmart, the voltages are printed as variable, which is one of the major improvements to QC3.0. Interestingly, on the ChoeTech there is no mention of variable voltage. In my testing it does vary the voltage similarly, but my personal opinion is they are missing out by not advertising this on the label.
Other notable pros/cons:
1. The ChoeTech has a reversible USB-A port, so it doesn't matter which end is up. That's nice. It also comes with a USB-A to USB-C cord, though only 3 feet long.
2. The ChoeTech cable supplied is the same USB-A to C cable which has been reviewed and approved as USB-C spec by Benson Leung here: http://www.amazon.com/review/R3URN3...sb-20&linkId=9f4d7368af5d896b0482e4f62db75d06
ChoeTech support has confirmed this personally.
3. The TronSmart comes with a longer cord, but unfortunately it’s USB-A to micro-USB. It’s too bad it’s micro-USB, because I’m not aware of any QC3 phones that use microUSB. So you’ll need an adapter or a different cord.
First up, the ChoeTech.
@stuart0001 has posted an earlier review of the ChoeTech UK version, seen here: http://forum.xda-developers.com/lg-g5/accessories/choetech-qc-3-0-18w-wall-charger-t3356038. Interestingly, he found that the charge rates were exactly the same as his LG fast charger if the screen was off. There were some situations were QC3 charging was much better with the screen on at high temperatures.
For the first ChoeTech test run, I used the LG-supplied cable.
Top off amperage was applied for an additional 30-40 minutes after hitting 100%.
I repeated this with the ChoeTech Benson approved cable and found identical results.
Onto the Tronsmart. I used the G5 supplied LG cable first.
Repeating the cycle with the ChoeTech Benson approved cable gave nearly identical data.
Comparing side by side by side the QC2.0 data with the QC3.0 data:
So very intriguing. Just like with @stuart0001 's analysis, the charging times did not differ much at all from QC2.0 charging!
But there’s more to this than just the charging times. Using my voltmeter, the voltage for each charger is a bit different. Using the LG fast adapter, the voltage hangs around 9V for the entire duration with the amperage slowing decreasing.
Using QC3.0, voltage ranged between 6.3 - 8.3V, with amperage maxing at 2.7A.
(Note the nonstandard charging time data points. The voltmeter does not have any logging capability, so I physically had to check on it throughout the hour+. Sometimes I had things to do )
QC3.0 advertises 80% fill in 35 minutes for QC3.0, compared with 65% for QC2.0. We don’t really see this though. Possible reasons?
1. The phone has preset charging parameters that won’t let us go that fast. A Tronsmart support person has told me that the G5 likes 6V as its optimal charging level. We do see this on the voltmeter results much of the charging cycle. I believe this is set in the kernel programming.
2. The 18W rating on the chargers tested won’t allow for greater amperage or voltage. There are 24W chargers out there.
3. The USB-A port on the chargers have some limit? Would love to test a USB-C port QC3.0 charger (I think there’s only one on Amazon right now).
4. There is some sort of charging limitation in the USB-A to USB-C cable after all.
More ideas to think about.
EDIT:
Attempts to monitor charging voltage/amperage of the USB-A to micro-USB with USB-C adapter result in repeat disconnects and reconnects.
I think the amperage and voltages are too high for the connected USB meter to measure and pass through.
EDIT 2:
I purchased a more reputable USB meter and it works now. The cheap one would throw a fit and reset/cut off charging when the voltage or amperage hit its upper limits. I may re-test some of the voltage measurements in the future.

@waylo Thanks for that excellent write up.
Picking up on the Qualcomm advertised estimate. It's disingenuous at best (I'd say they're being fraudulent) . They state in small print that it's based on the 0-50% current, so how they can justify extrapolating that instead of using the actual time is beyond me.
https://www.qualcomm.com/products/snapdragon/quick-charge
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Haha, that is very very sneaky of them. Seriously, why don't just extrapolate the first 20 minutes (40% then) and say it'll be full in 45 minutes then?
Getting some weird results on the USB meter trying to measure QC3.0 through USB-A to USB-micro cable with a USB-C adapter on it. Do you have one to try with your voltmeter?

waylo said:
Haha, that is very very sneaky of them. Seriously, why don't just extrapolate the first 20 minutes (40% then) and say it'll be full in 45 minutes then?
Getting some weird results on the USB meter trying to measure QC3.0 through USB-A to USB-micro cable with a USB-C adapter on it. Do you have one to try with your voltmeter?
Click to expand...
Click to collapse
Yes I have. I can have a look later. Something else I've noticed occasionally, but need to try & repeat, is that even different USB-A to C cables are giving quite wildly different voltages on the same charger.
Sent from my LG-H850 using Tapatalk

waylo said:
With the supplied LG fast charger (QC2.0-esque), it will hang out at 9V the entire time with the amperage starting out around 2A and then dropping as the battery fills.
Now, I have stated in many places that the amperage tops out around ~3A early in the charging process, which is from data collected via the app Battery Monitor Widget (BMW). So there is a bit of a discrepancy here. I have been a big advocate for BMW over other apps, due mostly to its passive logging. The dev of BMW has emailed me saying the mA is provided by the Android OS using a current sensor. So as of now, I don’t have a good explanation for how I routinely get ~3A charging amperage logs for the first 20 minutes while my ammeter does not show that draw. Could be a cheap (certainly) and inaccurate (don’t know) ammeter for all I know.
Click to expand...
Click to collapse
Am more likely to trust those cheap meters because they have proven to be invaluable in diagnosing charging problems with older devices. Software based tools proved to be not very useful with fault finding.
So getting 3A in software and the meter reading 2A implies an error of 50% with the meter. That is way too high an error. Don't believe it.
It's good to have both as a check but i'd side with the meter. It isn't faulty.
---------- Post added at 08:16 AM ---------- Previous post was at 08:08 AM ----------
stuart0001 said:
@waylo Thanks for that excellent write up.
Picking up on the Qualcomm advertised estimate. It's disingenuous at best (I'd say they're being fraudulent) . They state in small print that it's based on the 0-50% current, so how they can justify extrapolating that instead of using the actual time is beyond me.
https://www.qualcomm.com/products/snapdragon/quick-charge
Sent from my LG-H850 using Tapatalk
Click to expand...
Click to collapse
Usual BS claims in the tech industry...once people start poking around the real picture emerges.

One Twelve said:
Am more likely to trust those cheap meters because they have proven to be invaluable in diagnosing charging problems with older devices. Software based tools proved to be not very useful with fault finding.
So getting 3A in software and the meter reading 2A implies an error of 50% with the meter. That is way too high an error. Don't believe it.
It's good to have both as a check but i'd side with the meter. It isn't faulty.
---------- Post added at 08:16 AM ---------- Previous post was at 08:08 AM ----------
Usual BS claims in the tech industry...once people start poking around the real picture emerges.
Click to expand...
Click to collapse
It's a trick one. However the reported values in apps seem in step with the % gain and battery capacity. ie it's 2800mAh capacity so at 3A you'd expect 50% charge in 28 minutes which is what you get.
Also, the meter reports output but won't account for usage drain & won't give the net +ve charge current the battery is actually receiving.
It comes down to the correct measure for capacity should be watt hours. I suspect the software reports must be using a fixed internal volt number & applying that to the received watts to give a mA figure.
Ultimately, if we think of the mA software #s as really a relative guidance simply on how fast it'll fill 2800, it's as good as any real life measure
http://www.goalzero.com/solarlife/2...-question-of-battery-capacity-in-electronics/
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https://www.youtube.com/watch?v=yYx6GW-HaVg
4:30 onwards.
Says he got from 5% to 91% within an hour with the stock charger..
That would be faster than QC2.

One Twelve said:
https://www.youtube.com/watch?v=yYx6GW-HaVg
4:30 onwards.
Says he got from 5% to 91% within an hour with the stock charger..
That would be faster than QC2.
Click to expand...
Click to collapse
That's bull**** I reckon
Sent from my LG-H850 using Tapatalk

stuart0001 said:
That's bull**** I reckon
Sent from my LG-H850 using Tapatalk
Click to expand...
Click to collapse
From the last page.
At 90 within the hour.
2. Does the LG charger work as fast as a certified QC2 charger?
Yes, pretty much.
Click to expand...
Click to collapse

One Twelve said:
From the last page.
At 90 within the hour.
Click to expand...
Click to collapse
I stand corrected. ?
Sent from my LG-H850 using Tapatalk

So is there any need to get additional chargers and cables ? What compelling arguments can be made to support that.
why not just use what came in the box
I don't believe LG would intentionally supply a charger & cable that could be harmful to the G5 despite what Benson Leung says.

Regarding the current discrepancies.
I put my phone in aeroplane mode & killed all running apps room minimise background draw.
If I multiply the Amps by Volts of both meter & 3C app (mV/1000) to get Watts, I'm generally getting a fairly consistent 15% higher on the meter. This is likely due to adapter compensating for efficiency loss of the cable & some draw used by background apps.
So both methods appear to be accurate in their own way.
I'd say the meter is good to assess it's maximum wattage & the voltage range but if you want to know how quick it charges the phone, software is best.
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---------- Post added at 07:34 PM ---------- Previous post was at 07:04 PM ----------
One Twelve said:
So is there any need to get additional chargers and cables ? What compelling arguments can be made to support that.
why not just use what came in the box
I don't believe LG would intentionally supply a charger & cable that could be harmful to the G5 despite what Benson Leung says.
Click to expand...
Click to collapse
If you use the phone a lot whilst charging, above 32c with screen on, QC 3.0 is significantly faster. In fact I've seen QC 2.0 not even be able to supply enough for a net positive current.
For me, after seeing the results, in car at least is a must for QC 3.0.
Screen off they are near identical.
The voltage granularity of QC 3.0 may mean slightly prolonged battery longevity but no really an issue when we can swap batteries anyway.
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stuart0001 said:
[MENTION=2562936]https://www.qualcomm.com/products/snapdragon/quick-charge
Click to expand...
Click to collapse
Says its a 1.5C charge. But only upto 50%.
Compare with this graph from here.
if you can charge the battery completely in 1 hour its a 1C charge.
But the table above indicated it took 80 minutes to completely charge. Implying its less than 1C charge for the total.
Then there is the discharge bit. Can anyone kill their battery in 1 hour ? that's a 1C discharge.
I don't know anybody that can do that. The fastest i've seen is dead in 1h30 with 4k video. 1% an hour. Still not a 1C discharge.
Am beginning to think fast charge, quick charge some other speedy charge per se ain't doing anything bad for the battery
What is more likely to do it is operating temperature.
All batteries achieve optimum service life if used at 20°C (68°F) or slightly below. If, for example, a battery operates at 30°C (86°F) instead of a more moderate lower room temperature, the cycle life is reduced by 20 percent. At 40°C (104°F), the loss jumps to a whopping 40 percent, and if charged and discharged at 45°C (113°F), the cycle life is only half of what can be expected if used at 20°C (68°F).
Click to expand...
Click to collapse
stuart0001 said:
If you use the phone a lot whilst charging, above 32c with screen on, QC 3.0 is significantly faster. In fact I've seen QC 2.0 not even be able to supply enough for a net positive current.
For me, after seeing the results, in car at least is a must for QC 3.0.
Click to expand...
Click to collapse

One Twelve said:
Says its a 1.5C charge. But only upto 50%.
Compare with this graph from here.
if you can charge the battery completely in 1 hour its a 1C charge.
But the table above indicated it took 80 minutes to completely charge. Implying its less than 1C charge for the total.
Then there is the discharge bit. Can anyone kill their battery in 1 hour ? that's a 1C discharge.
I don't know anybody that can do that. The fastest i've seen is dead in 1h30 with 4k video. 1% an hour. Still not a 1C discharge.
Am beginning to think fast charge, quick charge some other speedy charge per se ain't doing anything bad for the battery
What is more likely to do it is operating temperature.
Click to expand...
Click to collapse
You're probably right. For me, because I can replace the battery, being able to charge quickly in the car is more important than longevity.
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