quick charger problems - Moto Maxx Q&A, Help & Troubleshooting

Using QC 2.0 charger phone don't charge above 85-92%, current just dropping below 1 amp.I tried out 2 chargers and 1 powerbank with QC 2.0 and get same result. With regular charger its go up 100%.
UPD: If reconnect charger current stay in rage of 2 - 2.2 amps for about 30 secs and after dropping.

From what I understand, QC-mode doesn't run "all the time" and is only intended to bring you up to about 80-90% (I forget the actual level). After that, a QC charger is supposed to go back to "normal" charging mode to top-off the battery to 100%. So, in that sense, it makes sense you're not seeing high-amp charging at higher levels... but it is odd that your QC charger is not able to complete the topoff phase...

schwinn8 said:
From what I understand, QC-mode doesn't run "all the time" and is only intended to bring you up to about 80-90% (I forget the actual level). After that, a QC charger is supposed to go back to "normal" charging mode to top-off the battery to 100%. So, in that sense, it makes sense you're not seeing high-amp charging at higher levels... but it is odd that your QC charger is not able to complete the topoff phase...
Click to expand...
Click to collapse
As i know, qc use voltage regulating, not current, so i dont see any reason to current drops

It looks like you're using the Ampere app - I use this app too. First off, the app maker has stated that it's not necessarily perfectly-accurate many times, and that it's good for using as a comparison.
Secondly, he has commented that he can't support QC behavior (see http://forum.xda-developers.com/and...rent-meter-t3040329/post59560078#post59560078 ) since he doesn't have a phone that supports it.
Both of these imply that he is not measuring current perfectly, and that he can't detect the QC voltage behavior. This means he's doing a mathematical computation based on some internal parameters... and so you're not really reading "mA" at all, but it's "guessing" at it. So, while QC alters the voltage, the reading in Ampere is a calculation that probably assumes a "non-QC" charger... which is why you'll see the drop as you are seeing it... because you're not reading real current output, but some calculated "guess" of what it is.
Bottom line, the numbers you report are not necessarily true, though I agree they should be higher. And, my statement still stands - QC will turn itself "down" after reaching a higher battery level. Based on this, you are seeing mostly-correct behavior.
However, this doesn't address why your phone is not charging further with your QC charger. You'd need to take a real volt-meter to get the real numbers and see what's happening. But, more easily, I'd suggest using different USB cables - these can affect charge rates dramatically. I have had issues with QC on some cables, and not on others... for example.

schwinn8 said:
It looks like you're using the Ampere app - I use this app too. First off, the app maker has stated that it's not necessarily perfectly-accurate many times, and that it's good for using as a comparison.
Secondly, he has commented that he can't support QC behavior (see http://forum.xda-developers.com/and...rent-meter-t3040329/post59560078#post59560078 ) since he doesn't have a phone that supports it.
Both of these imply that he is not measuring current perfectly, and that he can't detect the QC voltage behavior. This means he's doing a mathematical computation based on some internal parameters... and so you're not really reading "mA" at all, but it's "guessing" at it. So, while QC alters the voltage, the reading in Ampere is a calculation that probably assumes a "non-QC" charger... which is why you'll see the drop as you are seeing it... because you're not reading real current output, but some calculated "guess" of what it is.
Bottom line, the numbers you report are not necessarily true, though I agree they should be higher. And, my statement still stands - QC will turn itself "down" after reaching a higher battery level. Based on this, you are seeing mostly-correct behavior.
However, this doesn't address why your phone is not charging further with your QC charger. You'd need to take a real volt-meter to get the real numbers and see what's happening. But, more easily, I'd suggest using different USB cables - these can affect charge rates dramatically. I have had issues with QC on some cables, and not on others... for example.
Click to expand...
Click to collapse
Used 3 different cables:1 that's come with QC powerbank, 2 OEM motorola, 3 cable that come with s7 edge. Have 0 difference. Right now I'm think that something wrong with my battery circuit, coz QC use that circuit to control voltage.

Stas1337 said:
Used 3 different cables:1 that's come with QC powerbank, 2 OEM motorola, 3 cable that come with s7 edge. Have 0 difference. Right now I'm think that something wrong with my battery circuit, coz QC use that circuit to control voltage.
Click to expand...
Click to collapse
Agreed. You tried different QC chargers as well, I assume?

schwinn8 said:
Agreed. You tried different QC chargers as well, I assume?
Click to expand...
Click to collapse
Yes. Motorola OEM turbo charger, QC power bank and QC charger that I bought on gearbest.

Related

Use iPhone charger for Nexus One?

Hi guys,
since the charger of the iPhone has an USB connector, my question is if I can use that charger for the Nexus One too??
Since it supplies actually the same energy level (both can get energy from a PC USB instead), does this mean that also the charger delivers current with good specifications for the N1?
thanx in advance
exelero
How are you going to plug the iPhone 30 pin in to a micro USB? Maybe I'm not understanding you correctly.
to plug the microUSB-to-USB cable of the Nexus One into the USB socket of the iPhone charger.
moto1907 said:
How are you going to plug the iPhone 30 pin in to a micro USB? Maybe I'm not understanding you correctly.
Click to expand...
Click to collapse
I think (s)he means the mains adapter part with the USB socket in it - in which case yes it will work, you just need the right cable - which came with your N1
Looking forward to when all manufacturers standardised on micro usb, for a while I thought that mini usb was micro, so I was surprised to see that the n1 was different then I found out....
ok, now i see. Not enough coffee yet,lol
scote said:
in which case yes it will work
Click to expand...
Click to collapse
yeah, from the connection part, I know it will work. my question was more related if the iPhone charger delivers the appropriate current (tension/amperage) conditions for the N1 and, let's say, it won't burn the N1 due to a too high voltage, or mess up the battery due to an incorrect tension input.
I was just having a conversation on chargers with a friend of mine the other day and googled around on the subject on amperage/current/Ma of chargers..
I stumbled upon these posts (either here on XDA, Androidforums or other forums):
1. "The current rating on a voltage source is the maximum amount that the power
source can deliver without exceeding its saftey rating.
What this means is that if you are using some device that has a power supply
with a current rating of 500mA then its best not to use a different power
supply(at the same votlage rating) with a lower max current rating. i.e.,
anything < 500mA. Now ofcourse you might be able to get away with it but if
it burns down your house then its your fault.
A device will only pull the amount of current that it uses(assuming it is a
voltage controlled device) and this is true regardless of the current
rating(hence the saftey issues I discussed above). If a device
says(sometimes they don't) it uses 500mA then it uses 500mA. Maybe it
doesn't use 500mA all the time but the engineers have put that rating there
for a reason. Using any power supply with the right voltage and a current
rating of anything more than what the device uses is ok because the device
will only pull the current it uses.
Now, about the voltage rating: The voltage rating does not have to be exact
and different devices can tolerate different voltage ratings. The problem
usually is one of current. By increasing the voltage, say, you increase the
current the device uses and then you have changed the parameters that the
device was created with."
2. "And as far plugging your phone into a charger that outputs well over 850mA, don't worry about that either. Unlike voltage, the more amperage the merrier because the device will only take what it needs of the available resources."
3. "Moral of the story. Match the Voltage (5.1Volts) Meet or Exceed the 850mA rating. (which is .850 Amps) and you'll be fine."
4. "amps are not pushed but drawn
amps is the max the charger can provide
before it get pressured and lover the volts
you could use a 5volt 10000MegaAmp charger
and the device would only draw the amps the device
was made to draw all the rest of the amps would stay
at your electricity company
ohms law state Amps == volts / residence"
5. "amps are not pushed but drawn
ohms law state Amps == volts / residence
In other English:
P = VI, where
P = Power of device (watts) and is fixed
V = Voltage used by device (volts) and is fixed
I = Current (amps) and is decided by P/V (a fixed ratio)
So the device cannot draw more current than the fixed ratio. It may draw less current if the charger cannot supply the highest amount, but then as in one of the above posts, it simply takes longer to recharge.
With these devices, milliWatts/miliAmps are the scale, 5V is generally the fixed Potential Difference.
Used in a vehicle, the device is generally both drawing and expending energy (ie. charging and running say, GPS) simultaneously. This in/out situation when prolonged is the cause of the observed overheating with the original X1 battery."
Click to expand...
Click to collapse
Bottom line... Make sure the voltage is 5V, the amperage doesn't really matter.
thanx for your feedback.
both chargers have the same output (5V, 1A) - so I am already successfully using it.
blackberry storm also has micro-usb
hello two chargers and an extra usb-cable
To answer the OP's question...
yes it works fine. I have one in my car and charge my ipod and nexus at the same time without issue. The advanced zune car adapter also works (in case one of the 5 who own a zune are reading this ).
I have been using my old Iphone white plug -> USB adapter for almost a month now and I haven't had any issues.
I tried using the iPhone charger but it charges slow...it does not quick charge. Am I doing something wrong?
uhohhotdog said:
I tried using the iPhone charger but it charges slow...it does not quick charge. Am I doing something wrong?
Click to expand...
Click to collapse
no. If i'm up to date, and i think i am, you'll only get the 'fast charge' if you use the charger that came with your phone. the usb to usb micro chargers all charge slow
Can i use X10 mini charger (5v DC 850mA output) on nexus one by the things i read i understand that i can't but my english is not very good. Thanks
if youre talking about using the iphone usb cable on your n1, HAHAAHHAAHAHAHAH
if you mean using the usb-to-AC adaptor then yea you can use any usb cable to charge anything pretty much..

Question about chargers

I have an HTC Explorer, which came with a USB cable and an adapter to allow me to charge via mains as well. (Something like this: http://i.expansys.com/i/g/g232723.jpg - that's not the exact same one, but you get the idea). This charger says on it that it has an output of 5V and 1A. I also have a Blackberry Playbook, which came with a charger with a micro USB connector. However, this charger says on it that it has an output of 5V and 2A.
I have tested the HTC charger with my playbook, and it worked, but the question I want to ask is this: would it be dangerous to try the playbook charger on my HTC phone? (2A output from Playbook charger versus the presumably expected 1A input on the phone) I would like to be able to only carry one charger when travelling and the playbook charger has interchangeable adapters for international plugs, so it would be better to take, but obviously I don't want to overload the phone and have it burst into flames or whatever.
Any advice on the matter would be great, thanks.
It's not recommended by the manufacturer. It can void your warranty, though I don't know how they'd ever find out you were doing so. There can also be issues when using the cable to transfer data and such.
I did watch a video about that Blackberry charger.
Supposedly because of that 2A output, it charges your phone twice as a fast.
Sent from my Ainol Novo7 Elf using xda premium
I don't think there would be considerable damages but..I'd just use them both, even if it's less comfortable
I looked around and I think it should be safe. From what I've read online, the phone will only take a certain amount of current, regardless of the current being made available by the charger. Because the voltage is the same (5V), and the resistance of the phone circuitry is constant, by Ohm's law, I = V/R, so I will always be the same as long as V is the same. Presumably it'll drop with a lower input current, but the max I will always be the same, and that'll be limited to a safe level.
It might take a slightly higher current (say if the max the phone can take is 1.2A or something, the 1A charger can only give 1A but the 2A would give the full 1.2A), but no higher than the circuits in the phone will allow. After reading this, I realised that it made a lot of sense, and I think it's right. I also read that if it does charge the phone faster (which it will if the phone is taking a higher current e.g. 1.2A) it'll reduce the number of charging cycles that you get out of the battery. But the consensus seems to be that doing it every now and again when travelling etc. should be fine.
Thanks for all your responses.
EDIT: I think at worst, I might damage the battery, and they're not overly expensive to replace I don't think.
I agree, the rating on the charger is what it's MAX output, not that it will push that much current to your device. If you have an extra USB cable (that you dont mind cutting apart) and a mulit-meter, you can check to see how much current your phone is pulling from the BB Playbook charger. connect your mult-meter in-line with the red wire in the usb cable (just connect all others together)
Just make sure your mult-meter is rated for at least 2A.
Hope this helps.
Devices with lithium batteries usually have a charger circuit that limit the peak current that is sent to the battery. They also utilize temperature compensation so if you are charging the battery too fast, it starts limiting the charge current.
Where you might have a problem is when it's plugged in and you are using it, especially if the battery is low. You get high charge currents, combined with the operating current.

[Q] Charger Question

So, I've been wondering this for a while and thought I just ask. I've read about stories where people bought 3rd party chargers and had their phone malfunction. Because of this I have been worried about using any other type of charger and stick with the stock. Would it be fine to charge my Nexus 5 which a more powerful charger. For example the Nexus 7 charger? There's also a few other 3rd party chargers which seem to be much more powerful, but I was just worried that it would cause problems for the phone. Thanks in advance!
I've got a ton of Chargers laying around and they all work just fine. As long as the charger output is 5 volts you should be okay.
Sent from my Nexus 5 using Tapatalk
0dBu said:
I've got a ton of Chargers laying around and they all work just fine. As long as the charger output is 5 volts you should be okay.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Exactly 5 volts? The Nexus 7 charger is 5.2
PsychDrummer said:
Exactly 5 volts? The Nexus 7 charger is 5.2
Click to expand...
Click to collapse
It should probably be fine. I used my Mom's Nook charger at her house the other day with no issues.
Sent from my Nexus 5 using Tapatalk
0dBu said:
It should probably be fine. I used my Mom's Nook charger at her house the other day with no issues.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
http://www.amazon.com/Anker-Dual-Po...5839252&sr=8-1&keywords=anker+usb+car+charger
So this one is apparently 18V...says should work though. Weird.
PsychDrummer said:
http://www.amazon.com/Anker-Dual-Po...5839252&sr=8-1&keywords=anker+usb+car+charger
So this one is apparently 18V...says should work though. Weird.
Click to expand...
Click to collapse
the charger that you linked to is 18 W (aka Watts), but it is still 5V. it has a max output of 3.6A (amp). Watts = Volts x Amps.
As long as it's 5V, you should be fine. using a charger with a higher max A rating won't change anything, how much current that is actually drawn (amps) depends on the device.
jss2 said:
the charger that you linked to is 18 W (aka Watts), but it is still 5V. it has a max output of 3.6A (amp). Watts = Volts x Amps.
As long as it's 5V, you should be fine. using a charger with a higher max A rating won't change anything, how much current that is actually drawn (amps) depends on the device.
Click to expand...
Click to collapse
Oh I see. Thanks!
Okay, quick electrical lesson.
Volts: This one is relatively fixed at 5 for all "USB-Powered" devices. However, virtually all electrical devices have a 10% allowable variance. So... anything from 4.5V to 5.5V should work just fine, and be considered "safe." Of course, this can be tricky since some less-than-trustworthy manufacturers (*cough*China*cough*) will include the 10% variance in the specs. So... a charger rated for 5.5V charger may actually be running at 5.8V, which is within the 10% variance for a 5.5V device, and since 5.5V is within the variance for the 5V spec, they'll just double-down, and stamp it with 5V, which is bad. Confused? Yeah, me too. Just stay away from those cheap eBay chargers, to avoid such shenanigans.
Amps (aka Current): The thing to remember here is that the draw is king. What I mean here is that the device drawing power is what's important. If your device draws 1A, then it will ALWAYS draw 1A, no matter if it's plugged into a 1A, 5A, or 1000A charger. However, it will also attempt to draw 1A if it's plugged into a 0.2A charger, which would obviously be very bad (well, unless you're TRYING to start a fire). USB devices are designed to draw 0.5A, since that's what USB 2.0 (on a computer) provides. However, many devices can draw more if plugged into a wall charger. So... you're almost always safe plugging into a computer, but your wall charger needs to be rated AT LEAST what the device expects. That can be hard to determine, so the rule of thumb is that whatever Amperage charger the device came with is the MINIMUM amperage charger you should use. However, there is no maximum, since draw is king, so go nuts in the other direction.
Watts (aka Power): Power = Voltage x Current, so Watts is nothing more than Voltage times Amperage. Thus, a 5V charger charging at 2A is 10W (5x2=10). Now that you know this, you can ignore it. Nobody but the electric company cares how many Watts your wall charger is pushing. The only, and I mean only, thing this is good for is determining the Amperage if the manufacturer doesn't provide it. So... if the only spec listed for your micro-USB charger is 12W, then you can figure out the amperage by dividing that by 5 (since all USB devices are 5V). Your 12W charger, therefore, is pushing 2.2A. See the section on Amps, since that's what's really important.
jt3 said:
Okay, quick electrical lesson.
Volts: This one is relatively fixed at 5 for all "USB-Powered" devices. However, virtually all electrical devices have a 10% allowable variance. So... anything from 4.5V to 5.5V should work just fine, and be considered "safe." Of course, this can be tricky since some less-than-trustworthy manufacturers (*cough*China*cough*) will include the 10% variance in the specs. So... a charger rated for 5.5V charger may actually be running at 5.8V, which is within the 10% variance for a 5.5V device, and since 5.5V is within the variance for the 5V spec, they'll just double-down, and stamp it with 5V, which is bad. Confused? Yeah, me too. Just stay away from those cheap eBay chargers, to avoid such shenanigans.
Amps (aka Current): The thing to remember here is that the draw is king. What I mean here is that the device drawing power is what's important. If your device draws 1A, then it will ALWAYS draw 1A, no matter if it's plugged into a 1A, 5A, or 1000A charger. However, it will also attempt to draw 1A if it's plugged into a 0.2A charger, which would obviously be very bad (well, unless you're TRYING to start a fire). USB devices are designed to draw 0.5A, since that's what USB 2.0 (on a computer) provides. However, many devices can draw more if plugged into a wall charger. So... you're almost always safe plugging into a computer, but your wall charger needs to be rated AT LEAST what the device expects. That can be hard to determine, so the rule of thumb is that whatever Amperage charger the device came with is the MINIMUM amperage charger you should use. However, there is no maximum, since draw is king, so go nuts in the other direction.
Watts (aka Power): Power = Voltage x Current, so Watts is nothing more than Voltage times Amperage. Thus, a 5V charger charging at 2A is 10W (5x2=10). Now that you know this, you can ignore it. Nobody but the electric company cares how many Watts your wall charger is pushing. The only, and I mean only, thing this is good for is determining the Amperage if the manufacturer doesn't provide it. So... if the only spec listed for your micro-USB charger is 12W, then you can figure out the amperage by dividing that by 5 (since all USB devices are 5V). Your 12W charger, therefore, is pushing 2.2A. See the section on Amps, since that's what's really important.
Click to expand...
Click to collapse
I've plugged my device into chargers before that have rated outputs of .5A-1A when the device "expects" more... so, why didn't it start a fire?
Nitemare3219 said:
I've plugged my device into chargers before that have rated outputs of .5A-1A when the device "expects" more... so, why didn't it start a fire?
Click to expand...
Click to collapse
How much "more" are you talking about?
طوني تبولة said:
How much "more" are you talking about?
Click to expand...
Click to collapse
The stock charger is 1.2A, correct? So given that much... a charger I have used a few times on my Nexus 4 and 5 at a friend's place only outputs .5A... so at least .7A from what our phones should be able to draw.
Nitemare3219 said:
The stock charger is 1.2A, correct? So given that much... a charger I have used a few times on my Nexus 4 and 5 at a friend's place only outputs .5A... so at least .7A from what our phones should be able to draw.
Click to expand...
Click to collapse
An Android device knows that it's plugged into a wall charger, and thus can use more than 0.5A, only if the data pins are shorted together. Otherwise, it will assume it's plugged into a computer and only use 0.5A. Chargers made for android devices are usually so equipped. Apple chargers and some cheap-o chargers aren't. That's one reason why you'll see chargers with nothing more than a USB slot (no cable) specify that they're only compatible with Apple devices. Technically, they're compatible with any USB device, but not at the high charge rate.
Having said that, manufacturers can build in some safeguards. Quality chargers simply won't output more current than they're designed for. How they go about this varies. They may limit the output to their rated specs, they may blow an external breaker, or they may blow an internal fuse (usually killing the charger forever). Cheap chargers may not have such safeguards. Plus, many (if not most) phones/tablets will recognize when they're hooked up to a low-current source, and automatically switch to the low charge rate mode (0.5A).
In short, quality equipment is usually designed to be safe, with safeguards to protect against common scenarios. It's the cheap chargers that you have to worry about, because they tend to cut corners to keep the cost down. Safety provisions aren't technically necessary, and are usually the first to go.

HTC ONE M9 - QC2.0 Issues

Hello,
I've just got an M9 and am happy with it. Thought I'd make the most of the quick charge tech so I brought a QC2.0 charger from amazon:
An Aukey Quick Charge 2.0 42W 3 Ports USB Desktop Charging Station [sorry, can't post links yet]
Reading the reviews, and also other threads on here, that people with M9's using QC charge very fast but mine just isn't.
Right now it's taken just oven an hour to charge to full from 49%. Nothing like what other people are saying.
I've contacted the supplier of the charger and they've just sent me another one but it's exactly the same. How should I continue testing? How would I determine if it is the Phone?
The only issue I can potentially identify is that after around 75%-80% the rate of charge seems to drastically drop off.
Any insight would be great !
Stock ROM [EE - UK]
Android 5.1
Kernal 3.10.49
Thanks
bradleyh10 said:
Hello,
I've just got an M9 and am happy with it. Thought I'd make the most of the quick charge tech so I brought a QC2.0 charger from amazon:
An Aukey Quick Charge 2.0 42W 3 Ports USB Desktop Charging Station [sorry, can't post links yet]
Reading the reviews, and also other threads on here, that people with M9's using QC charge very fast but mine just isn't.
Right now it's taken just oven an hour to charge to full from 49%. Nothing like what other people are saying.
I've contacted the supplier of the charger and they've just sent me another one but it's exactly the same. How should I continue testing? How would I determine if it is the Phone?
The only issue I can potentially identify is that after around 75%-80% the rate of charge seems to drastically drop off.
Any insight would be great !
Thanks
Click to expand...
Click to collapse
Are you stock? if not what rom and kernel are you using?
regarding the drop off after 80% thats perfectly normal for QC, it will be quite rapid up until about 80+% then sort of trickle.
deakelem said:
Are you stock? if not what rom and kernel are you using?
regarding the drop off after 80% thats perfectly normal for QC, it will be quite rapid up until about 80+% then sort of trickle.
Click to expand...
Click to collapse
Stock [EE - UK]
Android 5.1
Kernel: 3.10.49
Pre - 80% its charging about 1%/minute. Which seems much slower than other people describe.
Post - 80% its about 0.3%/minute
Did it come with a USB cable, and are you using that one? In order to take full advantage of quick charging, heavier gauge and/or short cables are best. And yes, the closer to 100%, the less difference in charging rate.
mike.s said:
Did it come with a USB cable, and are you using that one? In order to take full advantage of quick charging, heavier gauge and/or short cables are best. And yes, the closer to 100%, the less difference in charging rate.
Click to expand...
Click to collapse
Hello,
Yes it came with a cable which was high quality, which I'm also using.
I did have a thought if it was because I was charging it with the phone turn on, but just did a test with it turned off and the results were very similar
Are you using the QC 2.0 port? Because that thing has only one.
I'm always using official chargers, same for my M9..works very well.
1337jay said:
Are you using the QC 2.0 port? Because that thing has only one.
I'm always using official chargers, same for my M9..works very well.
Click to expand...
Click to collapse
Hi, Yes using the correct Orange QC port on this charger.
Perhaps you could share what sort of charging times you're getting with your official charger?
Also worth adding there may be an 'offical' HTC charger but all that should matter is if it's Qualcomm QC2 licence device, which it is and is listed on the Qualcomm website
So I'm back to my original question, how can I tell if its the phone?
It would also be good if anyone with an M9 and QC2 could post their charging times
Thanks
bradleyh10 said:
Also worth adding there may be an 'offical' HTC charger but all that should matter is if it's Qualcomm QC2 licence device, which it is and is listed on the Qualcomm website
So I'm back to my original question, how can I tell if its the phone?
It would also be good if anyone with an M9 and QC2 could post their charging times
Thanks
Click to expand...
Click to collapse
you could check with the app ampere and see what youre getting with different cables and chargers
bradleyh10 said:
Hello,
I've just got an M9 and am happy with it. Thought I'd make the most of the quick charge tech so I brought a QC2.0 charger from amazon:
An Aukey Quick Charge 2.0 42W 3 Ports USB Desktop Charging Station [sorry, can't post links yet]
Reading the reviews, and also other threads on here, that people with M9's using QC charge very fast but mine just isn't.
Right now it's taken just oven an hour to charge to full from 49%. Nothing like what other people are saying.
I've contacted the supplier of the charger and they've just sent me another one but it's exactly the same. How should I continue testing? How would I determine if it is the Phone?
The only issue I can potentially identify is that after around 75%-80% the rate of charge seems to drastically drop off.
Any insight would be great !
Stock ROM [EE - UK]
Android 5.1
Kernal 3.10.49
Thanks
Click to expand...
Click to collapse
Something else to try would be disabling HTC's car app as it causes issues with charging. Open the car app>go to settings>disable all settings.
Go to phone settings>apps>car>uninstall updates>disable.
I use a Choetech 60W Quick Charge 2.0 for mains, and a Choetech 51W Quick Charge 2.0 Car Charger for the car. The car one is ideal because it has a blue LED for normal power which changes to green when it's using Quick Charge, to give you an indicator it's working.
I get between 1% and 2% charge a minute depending on how hot the battery is and what is running (Viper 4.0.1 ROM - Android M). Usually around an hour and half for a full charge.
Yours doesn't seem excessively slow - make sure you try when your battery isn't hot and when no apps are running in the background. Maybe useful to run the Ampere app to see what the current battery drain is before you start... ideally should be 200ma or less.
Drop off after 80% is normal, ~1% every 2 minutes.
Deathmeter said:
Something else to try would be disabling HTC's car app as it causes issues with charging. Open the car app>go to settings>disable all settings.
Go to phone settings>apps>car>uninstall updates>disable.
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I had the same problem initially with my QC2.0 chargers, finally found out the cables(including the one packaged with the charger) were not up to the task........eventually started getting slow charge warnings.
I use these: http://www.amazon.ca/gp/product/B013DOCZAC?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00
Haven't had a problem since
QC is only effective up to 80%, after that it will slow down so as not to cook the battery. This isn't just QC2.0, this is all forms of quick charging. Lithium based batteries must be very carefully charged as overcharging will lead to devices exploding. Just ask the hoverboard manufactures. As such the charge speed slows down after about 80% capacity. To further confuse things, a battery does not have a physical capacity like a gas tank or other physical holding device. Things like load, temperature, and age all change the available capacity. Capacity %, much like signal strength bars, is simply an estimation done with unknown calculations by the phone vendors. If you really want to know what's going on with your battery, you have to get an app like GSam Battery Monitor that will show you the current voltage of the battery and the charge/discharge rate in milliamps.
I'm using the same charger and it charges from 5% to 100 in 1hr and 20mins
Sent from my HTC One M9 using Tapatalk

Charging currents

How would I know what the max current is a device can support like an accessory? So for example, the stock charger that comes with the Plantronics Voyager Edge is only 500ma. What happens if I plug it into a Qualcomm QuickCharge 2.0 charger like what comes with the S6? Will it blow up? Regulate down and charge normally? Charge rapidly?
km8j said:
How would I know what the max current is a device can support like an accessory? So for example, the stock charger that comes with the Plantronics Voyager Edge is only 500ma. What happens if I plug it into a Qualcomm QuickCharge 2.0 charger like what comes with the S6? Will it blow up? Regulate down and charge normally? Charge rapidly?
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it will charge normally. it doesnt matter how big the output of the charger is. the phone will regulate it to only what it wants.
only time you will have an issue is if your charger output is too small. the phone will charge slow, and risk damage to the charger.
bweN diorD said:
it will charge normally. it doesnt matter how big the output of the charger is. the phone will regulate it to only what it wants.
only time you will have an issue is if your charger output is too small. the phone will charge slow, and risk damage to the charger.
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Does this also apply to the headset I mentioned? How would the current being too low damage the charger? USB ports and car charger are very low current in general
Sent from my E5823 using Tapatalk
km8j said:
Does this also apply to the headset I mentioned? How would the current being too low damage the charger? USB ports and car charger are very low current in general
Sent from my E5823 using Tapatalk
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1. yes
2. i didnt say it would damage the charger, i said there is a risk of it. thats because if its too small, the charger is working at maximum all the time.
3. usb's are regulated, not maxing out potential. im guessing car chargers do the same, however im not sure why. likely has something to do with a safe level considering the fluctuation in input voltage from the battery.
Hmm... So what about using a non-QC 2.0 charger (such as some that Anker make) on devices that support QC 2.0? Is there some safety issue or will it just charge slightly slower?
km8j said:
Hmm... So what about using a non-QC 2.0 charger (such as some that Anker make) on devices that support QC 2.0? Is there some safety issue or will it just charge slightly slower?
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sorry, i dont know about those.
maybe you misunderstood before, i cant think of any common instance where there would be a safety issue.
as unlikely as it is that you will ever burn up a charger (or device for that matter), the only thing that will happen is some small electronic parts will go bad. not some huge fire or whatever. sure on the device there could be a nice exploding fire, but there about always from defect and also extremely rare. it happens maybe 1 or 2 times a year, and its gets posted everywhere, then people think its an epidemic and start asking all these unnecessary questions. im sure the yearly device sales are in the hundreds of millions work wide. if a couple a year blow up, well s happens.

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