What would happen if I wirelessly charge AND AC/USB charge at the same time? - Nexus 5 Q&A, Help & Troubleshooting

I was just curious, lol. Would the phone break or something? Thanks.

patsimeon said:
I was just curious, lol. Would the phone break or something? Thanks.
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Oops, wrong section...Sorry! I don't know how to move or delete this. Anyway, my curiosity stays.

I think qi charging overrides USB charging, but it could be the other way around. Either way, the phone knows to deactivate one.

According to the battery monitor, wired charging (USB or A/C) overrides wireless charging. So, if you plug it in, it doesn't matter if you place it on the wireless charger or not.

I seem to recall someone at Google (on one of their product QA's for this phone) that even though it makes logical sense for the AC charger to take precedence (faster, less heat generation) but the QI charger is the one actually doing the charger.
I realize this contradicts what the battery status would indicate, but it is plausible that the indicator does not report it correctly.
Either way, the only time I can really see this being a factor for me even REMOTELY, is in the extremely rare event I have the phone plugged into my computer via USB, and sitting on my qi charger. But that almost never happens, I sync data to/from the phone over wifi just because, well, it's easier. It's not faster, but since it happens automatically it takes less effort.
In that case, I'd actually prefer the qi charger to work, since it's a faster charge than my USB port.
imagine the hilarity if both charging circuits worked though...sounds good in theory but I think we'd all have broken phones

I've plugged in my USB cable (hooked up to my computer via USB 3.0), while my phone was sitting on my Qi charger (nokia, 750mah), and the usb cable takes priority over the charge.
When wireless charging is in effect, you hear the NFC tone from the phone. Also the light on the charger turns on when its charging. It doesn't play when you lay a phone with USB plugged in, and the light doesn't turn on in front of the charger, so.

I'm pretty sure this would disrupt the space-time continuum.

xybur said:
I've plugged in my USB cable (hooked up to my computer via USB 3.0), while my phone was sitting on my Qi charger (nokia, 750mah), and the usb cable takes priority over the charge.
When wireless charging is in effect, you hear the NFC tone from the phone. Also the light on the charger turns on when its charging. It doesn't play when you lay a phone with USB plugged in, and the light doesn't turn on in front of the charger, so.
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I can confirm that while setting on the wireless charger, the "charging" light is on on the charger, but if I plug the cable in, the light goes out. The wired charger is DEFINITELY overriding the wireless charger.

For people using OTG cables or external storage adapters on the microUSB slot they do require wireless charging to work while being "plugged in".

awesome question...I have a S5, which has a galaxy charging current app
does one exist for the nexus? if so, you could tell by the amps it is charging at

Related

[HOW TO] - Charge your phone faster

Hello all. I found some information that some of you may find useful, so I wanted to share.
If you are running a custom kernel, go download Current Widget from the market
https://market.android.com/details?id=com.manor.currentwidget&hl=en
Install it, add the widget to your screen, and plug in your phone. You should be getting 350-380mA, this is AC charging mode. If you are getting in the low 200's you have a charger or cable that is not bypassing the data+ and data- wires in your phone, this is called USB charging.
If it is showing 0mA, then your kernal is not supported and it will not work. You can still do the steps below and get the same results, you will just not be able to see the data visually. I am running Gummy2.0 and the widget works great.
Some chargers are built .. badly.. and rely on a specific cable that will bypass the D+ and D-. the problem is, that cable will not work for anything USB related, such as flashing roms.
If you are anything like me, you have a dozen USB cables laying around and just use the closet one you can find when you need to charge up. However, if you use a data cable with a wall charger that does not disable D+ and D- you will charge at the USB charging rate, which is much slower than when AC charging is enabled, and can be irritating when your phone drains more power than its getting from the charger, resulting in power loss. This happens often while using your phone as a wifi hotspot. In USB charging mode, you can potentially drain the battery faster than the charger can charge. This can be prevented by being in AC charging mode.
You can either dig around for cables and test them out with your charger to see if you can get up to the 380mA range, or you can solder the D+ and D- points together in your charger. I do not recommend the 2nd option unless you are failure with soldering on small IC circuit boards.
But if you are adventurous, the 2 center pins on the USB cable are D+ and D-. If you open up your charger you will see the backside of the USB port and notice the 4 solder points that connect to the USB plug side. Place a bead of solder between this 2 to short them together. This will allow the charger to be in "AC" mode and charge at the higher rate.
This will also work for USB plug car chargers and will allow your phone to continue to have a positive charge even while navigating (which as most people know, Navigating can still drain your battery even when its plugged in).
Hope this helps! Feel free to ask any questions, I will do my best to answer them.
-EDIT-
Make sure to set the update interval in Current Widget to 1, for 1 second updates, this will help when monitoring the charge current.
Let me test this out... I'll report back in a lil bit. Calibrating battery, can't charge. Later...
I'm using a 10' cable from Monoprice. I'm getting 373mA. I'll post on what I get using my car charger... but I'm getting pretty good battery life that I rarely have to charge it in the ride

Can charger be used with other phones?

My charger that came with the SGS4G is not an official Samsung one. This is because I bought my phone used and it came with a 3rd party charger.
The charger is just a one-piece charger. I cannot remove the cable. It says:
AC Charger
Model: Micro USB
INPUT: AC 90V-240V
OUTPUT: DC 4V-8V
Can I use this charger with other phones that charge over MicroUSB? Do I need to make sure the other phone can handle 4V-8V?
Also I intend to buy another charger as backup, but I have this adapter which I plug in my USB cable into and then it goes to the power outlet. When I used this, my phone acted very erratic, swipes would not register correctly, phone became unstable, etc. Any reason for why this would happen?
It's sounds like your generic USB charger, and should charge anything that would charge if you were to plug it into a computer's usb port. I have a belkin usb plug, except it has a usb port on it instead of a cable, and it charges everything, even PS3 controllers lol.
Who makes this charger? If it's a super cheapo, the power may be dirty and may cause your phone to act funny.
avrillapete said:
It's sounds like your generic USB charger, and should charge anything that would charge if you were to plug it into a computer's usb port. I have a belkin usb plug, except it has a usb port on it instead of a cable, and it charges everything, even PS3 controllers lol.
Who makes this charger? If it's a super cheapo, the power may be dirty and may cause your phone to act funny.
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It is some cheap USB to AC charger I got from Dealextreme. Never had a problem with my old Huawei U8100 or DSLite.
arclite00 said:
My charger that came with the SGS4G is not an official Samsung one. This is because I bought my phone used and it came with a 3rd party charger.
The charger is just a one-piece charger. I cannot remove the cable. It says:
AC Charger
Model: Micro USB
INPUT: AC 90V-240V
OUTPUT: DC 4V-8V
Can I use this charger with other phones that charge over MicroUSB? Do I need to make sure the other phone can handle 4V-8V?
Also I intend to buy another charger as backup, but I have this adapter which I plug in my USB cable into and then it goes to the power outlet. When I used this, my phone acted very erratic, swipes would not register correctly, phone became unstable, etc. Any reason for why this would happen?
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I actually like to use chargers that are identical to stock one or better, I actually use the gf's old iphone charger: more amp
Sent from my SGH-T959V using xda premium
I use the same charged that came with my old pre plus. Use it for all my phones actually. Even my touchpad and nook color. Works just fine.
Sent from my SGH-T959V using XDA App
The quality of the charger can make a huge difference.
Honestly at the moment I'm using a droid bionic charger lol
arclite00 said:
Can I use this charger with other phones that charge over MicroUSB? Do I need to make sure the other phone can handle 4V-8V?
Also I intend to buy another charger as backup, but I have this adapter which I plug in my USB cable into and then it goes to the power outlet. When I used this, my phone acted very erratic, swipes would not register correctly, phone became unstable, etc. Any reason for why this would happen?
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Yes and yes to the first two questions but it normally isn't a problem depending on what is charging.
To the third, I had that same problem with my ZuneHD and a generic manufacturer's cable and I still don't know why.
Sent from my SGH-T959V using XDA App
The major issue is "are the data lines shorted together?". If they are not, your phone (and other devices that use USB for power) will see it as a simple USB port and limit draw to what a PC USB port can supply (not much).
There are also some ways (particular resistors used across... pins 1 and 3?) to indicate how high the charger can go.
Most of the USB car chargers (at least the ones with USB ports) do NOT do this, so they take forever to charge a phone.
Easiest way to tell: with the charger charging, go into device settings. If it says "Charging(AC)" you're good; "Charging(USB)" not so good.

[Q] Can't charge off PC USB?

My Photon Q won't charge off a PC USB port, or my laptop. Is this common? Thanks.
Are you using the usb cable that came with the phone? Reason I ask....I've discovered this phone is extremely picky about the cables you use. So far of the ones I have on hand, I can only consistently charge while in the car using my Belkin usb charging adapter with the Motorola cable that came with the phone. That includes a fairly nice ferrite core 6ft usb cable I got from Monoprice...which it works fine at home on AC, but in the car it stutters back and forth between charging and not charging.
Just today I used a cheap USB cable I bought off of ebay to charge my PQ using my laptop.
Its one of the ones sold as "HTC OEM USB Charger + cable" on ebay for like 3 bucks.
I also charge it at home using a green 3m cable from ebay, also bought for like 3 bucks lol.
Does it require that drivers be installed on the PC to get a charge? I've tried a few cables that I have laying around. I'll see if I can find other cables to try. The weird thing is if the phone is off, and plugged in, the LED lights up green, as if it's charging. But using the same cable, if the phone is on, it won't acknowledge that it is plugged in.
tcrimsonk said:
Does it require that drivers be installed on the PC to get a charge? I've tried a few cables that I have laying around. I'll see if I can find other cables to try. The weird thing is if the phone is off, and plugged in, the LED lights up green, as if it's charging. But using the same cable, if the phone is on, it won't acknowledge that it is plugged in.
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No, I wouldn't think so...
I've been able to charge off of many different USB cables on my Q. Not sure... Only thing it's been picky on so far is the wall wart - cable it hasn't seemed too picky about.
If its an old desktop with USB 1.1 it may not charge, and many laptops won't allow charging via USB if the laptop itself is not plugged into AC. Just a thought.
Sent from my XT897 using xda app-developers app
bryanfritz1 said:
If its an old desktop with USB 1.1 it may not charge, and many laptops won't allow charging via USB if the laptop itself is not plugged into AC. Just a thought.
Sent from my XT897 using xda app-developers app
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Very good point ^^^. I've heard some laptops, even when plugged in, still don't provide enough juice to charge (some) devices. Perhaps your laptop is one of these low-power USB port devices.
ive noticed that this phone is picky about what charger you use. i have a hard time charging on my pc as well. and certain micro usb's i have dont seem to charge it well either. needs to be the stock plug it came with.
I've basically given up at this point. Blackberry AC chargers work well for me, so I'll try and track down a few more of them. Otherwise, nothing is consistent. The desktop I've used has a plenty big enough power supply, and it charges my Epic with no problem. My personal laptop and work laptop both charged the Epic, but not the Photon Q. I guess I'll just have to carry around a charger instead of a MicroUSB cable when I'm on the road with my laptop.
Thanks, all.
tcrimsonk said:
I've basically given up at this point. Blackberry AC chargers work well for me, so I'll try and track down a few more of them. Otherwise, nothing is consistent. The desktop I've used has a plenty big enough power supply, and it charges my Epic with no problem. My personal laptop and work laptop both charged the Epic, but not the Photon Q. I guess I'll just have to carry around a charger instead of a MicroUSB cable when I'm on the road with my laptop.
Thanks, all.
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All,
For what little it's worth, I just noticed that the words "Not Charging" come up on the lock screen whenever I connect to the USB port of my laptop or desktop. So the PQ knows it's plugged in; it just refuses to accept the charge.
Also, whenever the battery completely dies, the phone will start to charge. It will charge for a few minutes until it has enough battery to turn itself on. As soon as it turns on, it stops charging, and a minute later, shuts down because of the dead battery. Then it starts charging again. This basically gives me an endless loop of the phone charging, starting, discharging, and shutting back off. I can't even get it to stay off long enough to get a useful charge without turning on automatically.
Yeah, the only issue I've had with this phone at all is the extreme 'quirkiness' it has in regards to charging on anything other than the stock usb cord & power adapter it plugs into. Even using the Moto vehicle dock for the Q, its completely hit/miss on charging. It will *often* go into that 'Not Charging' state where its kind of keeping sort of a baseline/'stalemate' of the current charge level for me, not really going down but not charging back up either. Not really sure what's up with that. With my vehicle dock for the longest I kept thinking maybe my cig lighter port on my car is bad, but I don't have issues with my radar detector at all.
Had the same problem with the not charging a few days back. I was leaving the phone in Mass Storage mode because just getting it into Mass Storage was a headache originally.
Hooked it up to it's original cable and woke up with 65% battery. Switched from mass storage to charge only and it started charging.
Not sure if it was caused by being in Mass Storage and wouldn't charge but now I put in Charge Only before bed.
It always works (in my experience) with the original cable that comes with it regardless, its anything else where its quirky.
PythonFanTN said:
It always works (in my experience) with the original cable that comes with it regardless, its anything else where its quirky.
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Isn't there a setting in ##3282# that enables and disables USB charging? Y'all have probably thought of this already. Anyways just thought if throw that out there. This is my first android that was not a low usage device. I know very little about it. I seriously think xda should make tee shirts that say "everything I have learned in life I learned from xda".
My phone was not charging in debugging mode yesterday.
Sent from my XT897 using xda premium

Apple Charger

Anyone attempt to use an iPad charger with the Tab S? I always travel with it and just pack a micro USB cable since it has high output. Just attempted to plug in my 10.5 to it and nothing. Luckily I was able to track down a different charger, and it worked fine with the same cable. This is the first device I've had that refused to charge using my iPad charger. What gives?
Mine won't charge that method either. (ipad air plug)
I think the Tab S is very picky, with some other chargers, i get the lightning indicator in the battery with a red cross on top, is this the same with you.
Yeah, mine's a little picky too. It won't charge off the Motorola micro usb chargers we have all over the place at work, but it will charge off just about any USB plug and cable I throw at it. Also charges off the USB ports in the plug strip in the living room.
litesout said:
Yeah, mine's a little picky too. It won't charge off the Motorola micro usb chargers we have all over the place at work, but it will charge off just about any USB plug and cable I throw at it. Also charges off the USB ports in the plug strip in the living room.
Click to expand...
Click to collapse
Do you get the red cross on top of that battery indicator.
There is a standard for high current usb chargers (rather than pc usb ports) that is indicated by having the data lines shorted together, as far as I understand it the iPad charger uses a different system to indicate high charge ability. (I'm assuming) the Samsung charger has these pins shorted internally and uses a plain cable (which can also be used for pc data connection).
You can get the high charge rate from a standard charger by using a cable with the data lines sorted, either make your own or buy a ready made one (e.g. Portapow or their plug-in inline adapter). I'd guess that the same cable would also get full charge via the iPad charger, these cables though cannot be used to connect to pc for data.
Samsung dedicated chargers
Apple and Samsung both use their own unique standards for USB charging so their devices know when they are connected to a charger capable of supplying the higher current they prefer. They do this by using a resistor voltage devider inside the charger to apply a very specific voltage to the data leads of the USB cable.
A little Googling will find examples and descriptions of the Samsung design.
There is a little plug-in, intelligent, USB adapter available that will interface Apple and Samsung devices to any charger. It senses what device you have and supplies the correct voltages on the data leads so your device thinks it's plugged into its official cherger. I think I saw it on ebay.
Edit- here is the adapter to allow using any charger with Samsung or Apple devices.
http://www.ebay.com/itm/USB-Charging-Port-Controller-Fast-charging-adapter-identificatio-For-Phone-PAD-/141342316282?pt=US_Other_Cell_Phone_Accessories&hash=item20e8a896fa
Just keep in mind that this adapter will make your tablet believe it's connected to a charger that can supply high current. If the charger cannot supply high current, it will be overloaded and it's output voltage will sag.
I don't think this will damage the Samsung tablet, but it will slow down charging and may overheat the charger.
cheetokhan said:
Apple and Samsung both use their own unique standards for USB charging so their devices know when they are connected to a charger capable of supplying the higher current they prefer. They do this by using a resistor voltage devider inside the charger to apply a very specific voltage to the data leads of the USB cable.
A little Googling will find examples and descriptions of the Samsung design.
There is a little plug-in, intelligent, USB adapter available that will interface Apple and Samsung devices to any charger. It senses what device you have and supplies the correct voltages on the data leads so your device thinks it's plugged into its official cherger. I think I saw it on ebay.
Edit- here is the adapter to allow using any charger with Samsung or Apple devices.
http://www.ebay.com/itm/USB-Charging-Port-Controller-Fast-charging-adapter-identificatio-For-Phone-PAD-/141342316282?pt=US_Other_Cell_Phone_Accessories&hash=item20e8a896fa
Just keep in mind that this adapter will make your tablet believe it's connected to a charger that can supply high current. If the charger cannot supply high current, it will be overloaded and it's output voltage will sag.
I don't think this will damage the Samsung tablet, but it will slow down charging and may overheat the charger.
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Click to collapse
Maybe I'm a conspiracy theorist, but I was also unable to charge the tablet with my wife's macbook using the same cable that works fine with other wall chargers. I am pretty sure it worked fine when it was booted into bootcamp as well...
She's in Europe for a few months so I won't be able to confirm for a while.
mears said:
Maybe I'm a conspiracy theorist, but I was also unable to charge the tablet with my wife's macbook using the same cable that works fine with other wall chargers. I am pretty sure it worked fine when it was booted into bootcamp as well...
She's in Europe for a few months so I won't be able to confirm for a while.
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The only charger I've used with my Tab S 10.5 is this one- http://www.amazon.com/gp/product/B00DVH62J2/ref=oh_details_o08_s00_i01?ie=UTF8&psc=1
I haven't even tried the factory charger yet. I'll have to test it and see if the Tab S uses the same voltage sensing on the data leads as the previous Samsung tablets.
I've been using an Ipad 10w charger,fat,square,.twice the weight of the OEM Samsung charger ,removable prongs.
It WORKS WELL. Where my Samsung OEM charger has trouble charging
when the tablet is in use, the fat Apple charger kept charging at a good speed.
A bit warm as compared to OEM Samsung charger but not "Hot".
Probably 20% + faster charging as its very noticeable (except 99 to 100 % takes a while, charging rate software?)
I'm using an original Apple charger at work to charge my 8.4. I don't know if the charger is for an iPhone or iPad. Someone left it at work. I gave away the lightning cable that came with it since I don't own an Apple product. The cable I'm using is part of an LG qi charger (doesn't come with a wall adapter/charger).

[Q] Anyone know of an app or method to trigger Fast Charging?

I know Adaptive Fast Charging doesn't kick in unless the battery is very low - less than 20%, I believe. And, yes, I have the 15 watt charger(s) that supports AFC/QC2.0
Does anyone know of a way, or if it's even possible, to trigger the phone to kick in fast charging at low, but not painfully low, rates?
Hi
My S6 always charges at the quickest speed possible because when I connect my Samsung Charger the phone tells me I have connected the fast charger and I know it is charging quickly because if I use another charger the time for a full charge will increase significantly. Are you using the official fast charger?
Yes, I've always experimented with the high-power charger that came with the phone.
Fast charging will speed up or slow down automatically based on how charged the battery is. The emptier the battery, the faster it will charge. This charge will slow down gradually as the battery fills up. I don't think there's a way to facilitate this, and even if there was, it probably would not be recommended to do as it might damage the battery.
Fast Charging is a concept, that comes into play when you are connected to the USB port of your PC. Typically when connected in MTP mode (or PTP FWIW), Phone charges slowly in order to prevent damage to the usb port. Certain kernels can permit fast charge provided your laptop has fastcharge usb.
For Wall charging, Rapidcharge technology does exist but requires original samsung charger. With any other OEM charger, it'd be a matter of luck since it'd need to have that 11th pin on the microusb.
Everything else that @Japultra is correct.
I'm almost too embarrassed to admit this, but it was the micro USB cord that wasn't letting my phone avail itself of the high-power adapters. I came across a thicker USB cable and, thinking/hoping that thicker cable also translated to higher gauge conducts, decided to try it out with my phone that was at 65%. Yup. The phone now indicated "fast charging".
I appreciate your forbearance, folks!
bwb8771 said:
I'm almost too embarrassed to admit this, but it was the micro USB cord that wasn't letting my phone avail itself of the high-power adapters. I came across a thicker USB cable and, thinking/hoping that thicker cable also translated to higher gauge conducts, decided to try it out with my phone that was at 65%. Yup. The phone now indicated "fast charging".
I appreciate your forbearance, folks!
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So the original cable that came with the s6 wasn't working for you?

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