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Hey fellows,
I just stumbled across this sentence with the following link:
Motorola Drivers: if you don't have it installed already get it here:
USB and PC Charging Drivers - Motorola USAThat got me thinking; usb ports always output some currency, but apparently this can be easily guided to make the phone charge faster. And since a lot of people, including me, charge their hero / phone exclusively via pc, couldn't it be possible for people over here to play a bit around with high-power-output USB drivers ? Especially people who are into wireless tethering would be eternally gratefull!.
charging a battery with higher current or voltage can damage it, the charging was designed with the voltage given by a standard usb port. Charging from a computer charges at the same rate as it would being plugged into the wall when done over usb.
Feel free to correct me if I'm wrong but doesn't the wall charger provide more amps than usb ports? And amps are drawn as needed,its the voltage you got to watch out for!
wall charger provides 5v @ 1A
usb port provides 5v @ 0.5A
i think its impossible to get higher than .5A from a usb socket so i dont think this would work
ducamie said:
wall charger provides 5v @ 1A
usb port provides 5v @ 0.5A
i think its impossible to get higher than .5A from a usb socket so i dont think this would work
Click to expand...
Click to collapse
it should work flawlessly on laptops with special usb ports (my 3 years old compal has such one), so probalby also in other computers...
bad luck that this works only under windows, and there is no support for this in linux...
Oh I didn't know that USB provides 0.5A. I use USB, wall outlet (1A), and occasionally my car charger (2A split). Yes, my phone does it a little hot but nothing near danger level when charging with the car charger.
my bad, usually the usb port by where the ac adaptor plugs in is usually more powerful, well at least on the laptops ive owned in the past
The USB standard only allows for 500mA over USB ports when a device is connected and authenticated, i.e. drivers loaded.
Without this authentication, the USB standard dictates a maximum of 50mA - basically enough to get the device to power up, install drivers, and then hop into the higher power mode. If you just connect cables to the USB port you should only get 50mA as nothing will be detected by the OS.
However, most if not all USB ports ignore this part of the spec and provide full 500mA to anything connected. In addition, a lot of USB ports now provide power when the computer is off, and provide power above 500mA - you may have to enable these functions though.
as far as I know, those motorola drivers signal a device that requires '1.5a' of power, 1.0a more than officially allowed by the usb specification.
Not all ports will actually give that amount of power, but it's a but of an ugly hack to say that the device can handle 1.5a, and some ports actually give them 1.5a (ports on desktop-chipsets can behave like this. Most laptop-chipsets follow the 0.5a spec closely).
I know our heroes can take 1.0a at least (that is supplied by the default HTC wall charger, am I correct?). But a) don't know if more works with a Hero b) changes of this actually working (ie misbehaving usb ports) are slim
Mod. edit: not dev related, moved to q&a
usb is approximately 5 volts now matter what kind of drivers you are using. the +5v rail in the usb port is already the one being used for charging, so the answer is no. but i guess HTC still could have made some drivers that acctually work for win7 x64...
jell said:
bad luck that this works only under windows, and there is no support for this in linux...
Click to expand...
Click to collapse
may i interject and say that this is just as possible in linux as in windows. there just isn't a known method for it yet, and very few people knows how to compile working homebrew drivers for USB 2.0
this would be handy for me to charge my phone with less amperes as i cant use my G15,G5,surround sound hs and charge hero at same time.....computer says i just canny do et cap'ain i doont have the poower!
I've searched high and low, and can't believe it's not a bigger issue on our device ( and many other deivces).
I have usb 3.0 ports (spec says 900mA max draw). So I should someway be able to achieve these higher rates of charging...
Is the issue the rezound not asking for more from the USB Host? Or is the issue my usb host driver not giving more?
I'm led to believe it's the rezound...
It can't stream 4g, and play full screen video and at least maintain it's charge off of USB.
I really want to resolve this.
The Rezound is a USB 2 device. As such, it can't request more than 5 USB 2.0 unit loads (=500 mA). It will draw more from a proper USB charging port.
Someone in another thread turned me on to this cable:
http://www.amazon.com/gp/product/B003VYBCAY/ref=oh_o00_s00_i02_details
It forces an AC charge on chargers that were showing up as USB (i.e. iphone charger). I imagine it'll do the same thing from any USB port... I believe it shorts the center pins within the cable.
It's sort of an expensive cable... but I plan on getting at least one more. Too many cheap chargers don't give AC, and this phone NEEDS it.
That's not how USB works (if properly implemented). A USB 2.0 port shouldn't deliver more than 100 mA, unless the attached device enumerates (has an actual USB conversation), in which case it may deliver up to 500 mA. The numbers are a bit higher for USB 3.0, but same concept. That cable (which violates USB specs) makes the phone think it's connected to a charging port. It would work fine with a real USB charger (but isn't a good idea, anyway). It will cause the phone to try and draw more than a USB data port can deliver. If used with a USB device which follows the spec, it will be worse than a regular data cable, and the device will only provide 100 mA. Best case, the phone might charge a bit faster than with a regular USB cable, worst case, you screw up the device you're charging from.
Better to just get a proper charger which follows the spec. You can get an OEM 1A charger through Amazon for like $7, cable included. Why screw around with questionable, non-standard stuff?
mike.s said:
The Rezound is a USB 2 device. As such, it can't request more than 5 USB 2.0 unit loads (=500 mA). It will draw more from a proper USB charging port.
Click to expand...
Click to collapse
If this is the case, then I get it.. and I'll ask...
what's taking so long for these devices to be usb 3.0 compliant? it's not like the standard was set yesterday
ah well... another year or three i guess!
thatsricci said:
If this is the case, then I get it.. and I'll ask...
what's taking so long for these devices to be usb 3.0 compliant? it's not like the standard was set yesterday
ah well... another year or three i guess!
Click to expand...
Click to collapse
It is because they haven't fully utilized the speeds of USB 2.0 by any means what so ever.
That and USB 3.0 is, in fact, fairly new, and with all new technologies it costs money.
Your $300, or $200 depending on when you bought it, phone would probably be an extra $100 - $200 with USB 3.0 technology, which itself is really only like USB 2.0.1 speeds at best.
Sent from the resounding Rezound
USB 2.0 does 480 Mbps "raw," real world, closer to 320Mbps (40 MBps).
That's faster than LTE can provide, and it's faster than a Class 10 SD card, which are the two fastest/most data intensive uses for USB on a phone. There's absolutely no need to add the cost of USB 3.0 to a phone at this time.
Charging when plugged into a PC is a convenience. Use a dedicated USB charger if you want performance. You can get such a charger, either AC or car, for less than $10. There's simply no problem here.
Speed was never what I was interested in, but charging for sure is.
It's convenient, especially when I'm on the go to use my laptop (which has an extended battery) and my phone at the same time (tethering/streaming) and it's nicer if the phone could charge/maintain it's battery level while doing what I need it to do! Even a dedicated charging port on the laptop that can power while the laptop is turned off should be able to give me max charge, so when I plug it in and drive down the road I get a good charge instead of a so so usb charge.
I'm more than willing to pay for this convenience I do carry the wall wart charger in my bag too for those times when I do need a fast charge, but it's silly to me that I need to use two plugs at the coffee shop... I suppose I could also carry an ac plug splitter, but yeah, now i'm just carrying more with me!
Edit: case closed though, now I understand why we can't get max charge from usb 3.0 ports, because it's the device specs that are limited. Stay Calm, carry on, I'll live!
Hi,
If I connect the S3 to USB3 port, should it charge faster than USB2 port?
I've tried that, and it looks like charging speed is the same. According to "Battery Monitor Widget" it's around 500ma. So I wonder if it's supported on the S3.
I'm using Sotmax rom, if it matters.
Thanks
You can tune it up by flashing siyah kernel and use stweaks.
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Thanks!
Is there a risk in doing so? Can it harm my phone in any way?
Animor said:
Thanks!
Is there a risk in doing so? Can it harm my phone in any way?
Click to expand...
Click to collapse
Yes if you set it to high you can damage your phone and you can burn down your usb port from your pc.
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Thanks.
So what should I set there in order to be safe?
I want my S3 to be able to charge from both USB2 and USB3. Meaning, if I connect it to USB2 to draw 500mA, and if I connect it to USB3 to draw more (900/1000 mA, I'm not sure).
Can it be done safely?
Think you have to change the settings manual every time you switch usb port.
There is no option to select automatically.
I personally think you don't get a lot time winst with charging faster tro usb3.
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its related to usb port mah , not related to usb3 or usb 2
Please also keep in mind that high speed charging may also have the implication to induce faster deterioration of the battery. I would highly advise OP to keep to original specifications in order to ensure you keep your manufacturers warranty and possibly prolong the life cycle of the battery and eliminate the possibility of hardware malfunction.
But it's high speed charging only compared to USB2.
If I connect the S3 to wall AC with the original Samsung adapter, it charges with 1A.
USB3 is 900mA, which is less than that. So it shouldn't effect the battery life.
My only concern now is what happens if I set USB charge limit to 900mA, but connect it to USB2 port.
Firstly, it's not the type of USB that matters, it's the power source itself (wall socket or USB). It's safe to draw more power from the wall socket, obviously. Both the USB3.0 and USB2.0 will be affected the same. The current transfer will be the same. By increasing the mA, there will be increased chances of damaging your USB port.
So, 900mA will affect both types of USB ports in the same way.
ok, thank you.
I was under the assumption that if I configure the device to draw 900mA from USB ports, then it will try to take 900mA also from USB2 port - but since this port is only able to transfer 500mA, it will behave the same as before.
Am I wrong about that?
Animor said:
ok, thank you.
I was under the assumption that if I configure the device to draw 900mA from USB ports, then it will try to take 900mA also from USB2 port - but since this port is only able to transfer 500mA, it will behave the same as before.
Am I wrong about that?
Click to expand...
Click to collapse
IMHO and with my reasonable knowledge of PC's - the USB 1.x/2.x ports can only provide 500mA. This is the USB port spec.
USB 3.x can provide up to 900mA. These both apply if the USB port is not a charging port.
The information quoted below is taken from Wikipedia:
Power
The USB 1.x and 2.0 specifications provide a 5 V supply on a single wire from which connected USB devices may draw power. The specification provides for no more than 5.25 V and no less than 4.75 V (5 V±5%) between the positive and negative bus power lines. For USB 3.0, the voltage supplied by low-powered hub ports is 4.45–5.25 V.[45]
A unit load is defined as 100 mA in USB 2.0, and 150 mA in USB 3.0. A device may draw a maximum of 5 unit loads (500 mA) from a port in USB 2.0; 6 (900 mA) in USB 3.0. There are two types of devices: low-power and high-power. A low-power device draws at most 1 unit load, with minimum operating voltage of 4.4 V in USB 2.0, and 4 V in USB 3.0. A high-power device draws at most the maximum number of unit loads permitted by the standard. Every device functions initially as low-power but the device may request high-power and will get it if the power is available on the providing bus.[46]
Some devices, such as high-speed external disk drives, require more than 500 mA of current[47] and therefore may have power issues if powered from just one USB 2.0 port: erratic function, failure to function, or overloading/damaging the port. Such devices may come with an external power source or a Y-shaped cable that has two USB connectors (one for power+data, the other for power only) to be plugged into a computer. With such a cable, a device can draw power from two USB ports simultaneously.[48]
A bus-powered hub initializes itself at 1 unit load and transitions to maximum unit loads after it completes hub configuration. Any device connected to the hub will draw 1 unit load regardless of the current draw of devices connected to other ports of the hub (i.e. one device connected on a four-port hub will draw only 1 unit load despite the fact that more unit loads are being supplied to the hub).[46]
A self-powered hub will supply maximum supported unit loads to any device connected to it. In addition, the VBUS will present 1 unit load upstream for communication if parts of the Hub are powered down.[clarification needed][46]
Charging ports and accessory charging adapters
The USB Battery Charging Specification of 2007 defines new types of USB ports, e.g., charging ports.[49] As compared to standard downstream ports, where a portable device can only draw more than 100 mA current after digital negotiation with the host or hub, charging ports can supply currents above 500 mA without digital negotiation. A charging port supplies up to 500 mA at 5 V, up to the rated current at 3.6 V or more, and drop its output voltage if the portable device attempts to draw more than the rated current. The charger port may shut down if the load is too high.
Charging ports exist in two flavors: charging downstream ports (CDP), supporting data transfers as well, and dedicated charging ports (DCP), without data support. A portable device can recognize the type of USB port from the way the D+ and D- pins are connected. For example, on a dedicated charging port, the D+ and D- pins are shorted. With charging downstream ports, current passing through the thin ground wire may interfere with high-speed data signals. Therefore, current draw may not exceed 900 mA during high-speed data transfer. A dedicated charge port may have a rated current between 500 and 1500 mA. There is no upper limit for the rated current of a charging downstream port, as long as the connector can handle the current (standard USB 2.0 A-connectors are rated at 1500 mA).
Before the battery charging specification was defined, there was no standardized way for the portable device to inquire how much current was available. For example, Apple's iPod and iPhone chargers indicate the available current by voltages on the D- and D+ lines. When D+ = D- = 2V, the device may pull up to 500 mA. When D+ = 2.0 V and D- = 2.8 V, the device may pull up to 1000 mA of current.[50]
Dedicated charging ports can be found on USB power adapters that convert utility power or another power source — e.g., a car's electrical system — to run attached devices and battery packs. On a host (such as a laptop computer) with both standard and charging USB ports, the charging ports should be labeled as such.[49]
To support simultaneous charge and sync, even if the communication port doesn't support charging a demanding device, so called accessory charging adapters are introduced, where a charging port and a communication port can be combined into a single port.
The Battery Charging Specification 1.2 of 2010 [14] makes clear, that there are safety limits to the rated current at 5000 mA coming from USB 2.0. On the other hand several changes are made and limits are increasing including allowing 1500 mA on charging ports for unconfigured devices, allowing high speed communication while having a current up to 1500 mA and allowing a maximum current of 5000 mA.
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Click to collapse
Hope this helps to clarify for you.
Yes, and as far as I know, standard charge rate is 475mA via USB and 1000mA via wallet.
These values can be changed with SiyahKernel but I would not recommend to do it.
When ever possible, I take the wallet charger and get double charging speed.
After finally getting a usb3 card in my pc (onboard usb3 broken).
S3 only can use usb2 cable so doesnt even have usb3 support.
So the question is charging at higher rates in usb2 mode on a usb3 port.
Using stweaks I adjusted to 900ma
In galaxy charging current it reports max 500 now 899 avg 500, not conclusive.
same app on charger reports max 900 now 999 avg 900
usually it reports on usb without stweaks change 475 for all 3.
I had theory the galaxy charging current app had issues reporting avg and max right for 900ma so reduced AC charge to 900ma but that still reports 900 for avg and max. just the now dropped to 899.
for the usb3 the avg and max now state 600 but those 2 are still way off 900.
Max is the only one to take into consideration as per info on Google play.
I can get 900 out of a usb 2 port. Usually the ports aren't restricted to what they can put out. The onus is on the connecting device to only draw 475 or 900 for usb 2/3
This could be different with a usb card not connected directly to the motherboard though. What did you get?
Sent from my GT-I9300 using Tapatalk 4
are you sure? my guess is that the now is the accurate one, with max been buggy.
I can get 900 out of my usb2 ports also but I only left it going for a few seconds as that has them out of spec.
It looks like max is buggy and always reports same as avg.
--edit--
yeah I read the description and he says what you said. It would seem there is a hard cap somewhere on my phone to 600ma charging via usb then and 900 via AC.
avg and max report 500 on my usb 2 ports and 600 on my usb3 ports.
now reports 899 on them all.
--edit again--
found the cause its my dock, the dock claims 1amp output yet its capping to 600ma. With the cable direct between phone and usb it shows 900 on both my usb2 and 3 ports.
you know if any s3 docks that are 900ma compatible?
Yes im sure. The developer of the app says this on Google play description.
Edit... i should read entire posts before replying
Sent from my GT-I9300 using Tapatalk 4
@rootSU,
What is your recommendation for this issue?
Do you recommend configuring stweaks for more then 500mA for USB? I don't want to harm my device or my PC in any way...
Animor said:
@rootSU,
What is your recommendation for this issue?
Do you recommend configuring stweaks for more then 500mA for USB? I don't want to harm my device or my PC in any way...
Click to expand...
Click to collapse
Can't make recommendations at this point in time. You didn't answer my question(s)
Sent from my GT-I9300 using Tapatalk 4
rootSU said:
Can't make recommendations at this point in time. You didn't answer my question(s)
Sent from my GT-I9300 using Tapatalk 4
Click to expand...
Click to collapse
But you've asked chrcol, not me...
I've previously been able to charge my phones (a droid Charge and the S3) with the USB plug in car with out any problems. It was slower than the A/C charger, but got the job done. But recently, I noticed that the S4 was taking forever to add any charge to the battery when plugged into the car's USB (Its a 2012 Ford Focus with My Ford Touch). I tested the USB line with the "Galaxy Current Charging" App and saw it was only registering 460 mAh (which is the same as when the phone is unplugged). I also tested my cigarette lighter charger which showed 860 mAh. (BTW, I tested the USB cord using my 2 Amp stock S4 A/C charger and it showed 1900 mAh, so I don't think there is anything wrong with the USB cord, itself.)
So, is there a problem with using the standard USB plug in our cars to charge the S4?
Thanks in advance,
Rich
richs10 said:
So, is there a problem with using the standard USB plug in our cars to charge the S4?
Thanks in advance,
Rich
Click to expand...
Click to collapse
If you're really getting 860ma, you should be OK. The problem is that most 12v car adapters end up delivering about half that current. As you've already figured out, the S4 can accept up to about 2000ma (or 2A), but only when using a 5V/2A adapter (like the one that comes w/the device) AND only when using a compatible cable (use a non-stock cable with the AC adapter and you'll probably see more like 950ma than 1900).
You might want to try this Motorola auto charging cable http://www.amazon.com/gp/product/B000S5Q9CA/ref=wms_ohs_product?ie=UTF8&psc=1 . It's rated at about 1A, which is about half the level that the S4 can accept, but still pretty good. I haven't measured the exact output, but I can tell you that it's faster than any other car charger I've owned before.
You may also want to search online for an adapter that can achieve closer to 2A.
Andy:
I have that exact Motorola cigarette lighter charger and it works fine. My problem is trying to charge the phone in the car using the car's usb plug and a 'usb to micro usb' cord. That is where I have run into the problem with the S4. I could do this with my older phones, but the usb plug in the car only seems to supply the 460 mah with the S4. Any ideas why?
richs10 said:
Andy:
I have that exact Motorola cigarette lighter charger and it works fine. My problem is trying to charge the phone in the car using the car's usb plug and a 'usb to micro usb' cord. That is where I have run into the problem with the S4. I could do this with my older phones, but the usb plug in the car only seems to supply the 460 mah with the S4. Any ideas why?
Click to expand...
Click to collapse
Because the usb spec it wasdesigned under limits it to a maximum of 500 mA. It is a given that charging will be excruciatingly slow at that low of a current draw if it even charges at all.
Sent from my SCH-I545 using Tapatalk 4 Beta
richs10 said:
Andy:
I have that exact Motorola cigarette lighter charger and it works fine. My problem is trying to charge the phone in the car using the car's usb plug and a 'usb to micro usb' cord. That is where I have run into the problem with the S4. I could do this with my older phones, but the usb plug in the car only seems to supply the 460 mah with the S4. Any ideas why?
Click to expand...
Click to collapse
There's a product review on Amazon, where the reviewer provides a pretty good summary that might help explain. He claims that if the device does not 'recognize' the charging source with certainty, it may default to 500ma to prevent potential damage to the charge source (which could be e.g., a PC). The recommendation seems to be to use a special charging cable that would demonstrate to the device that a low-current source is not connected.
(here's an excerpt)
"...The USB power spec is for 0.5 Amps at 5 Volts... or 2.5 Watts. This was great up until the last couple years when devices have gotten really power hungry, particularly smartphones and tablets and to a lesser extent dedicated GPS's. Some of these devices use over 2 Amps, particularly the tablets like the iPad (or in my case the HP Touchpad).
Manufacturers of these devices therefore had a dilemma. If they had their devices pull more than 0.5 Amps, they risked damaging the power source, which could be a computer, that was only prepared to source 0.5 Amps. Thus the manufacturers have used tricks to determine whether their device is connected to an unknown source, at which point they purposely only draw 0.5 Amps, or to the dedicated charger that was provided with the device, where they can draw all the power they need.
There seem to be two common tricks used. The first is to short the two data-wires together in the charger. This is what most non-Apple devices do. Since a computer or older device wouldn't have done this, the device can assume it is safe to draw all the power it needs..."
In a subsequent discussion about the review, one of the commenters went on to recommend this charging cable - note that, per above, it's a 'shorted' cable, so it can only be used for charging (not data xfer). You might want to give it a try: http://www.amazon.com/gp/product/B003VYBCAY/ref=cm_cd_asin_lnk
That will not work if the source itself is limited to 500mA. The shorted data pins on the cable only allow the PMIC to draw a higher current if the source is capable of providing it.
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Couldn't find an answer to this after searching, so here's my question.
If I use, say the micro usb cable from the Note 2 to charge my Note 3, will it be as fast as using the Note 3's cable.
The note 3's cable is USB 3.0 which I understand would make data transfer faster (assuming PC has USB 3) but there's conflicting info about whether this makes charging faster.
For the sake of above, assume the power source is the same (i.e., a wall charger).
Does anyone know or has tested?
Cheers
Mine charges just as fast using normal USB 2 cable add it does the 3. USB 3 is higher data throughput. Not amperage. That is off the charger itself. I never use the 3.0 cable. I use 6ft USB 2 cables and still charge in about two hours, little less usually . It's all about the output on your charger. 2A like the stock one or Verizon ones and you are fine. 500mAh charger would take forever to charge it though.
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I actually notice a difference or I'm not sure if it's in my mind but a hour and my battery is fully charged with supplied charger my old note 2 charger take 1.5 or so hours to charge.
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Now I'm not sure about subtle details on how usb charging works, but it seems the original wall adapter is not outfitted with a usb 3.0 port. If you look at usb 3.0 ports (female end) they have metal contacts on the front edge, which the samsung wall adapter doesn't have. Not sure if the extra contacts carry current, but my guess is if only the standard usb 2.0 contacts are being used then speeds would be equal regardless if a 3.0 or 2.0 cord is used.
I have USB 2.0 cables that charge just as fast as the supplied USB 3.0 one. I also have ones that don't.
Don't buy really cheap cables. cheap ones usually have thinner copper wires (the cable could still be thick, but that's down to thicker insulation). If there's not enough copper to allow the current to pass, the charge rate will be slower.
I believe the USB 3.0 cable only charges faster if plugged into a USB 3.0 port on a computer compared to a USB 2.0 cable. On a wall charger they are the same speed.
Wish there was an app like Galaxy Charging Current that would work on this device.
kudosmog said:
Wish there was an app like Galaxy Charging Current that would work on this device.
Click to expand...
Click to collapse
USB 3.0 spec shows 900mA so I suspect that connecting to a USB 3.0 port on a computer isn't going to charge as fast as the 2A wall charger over either USB 2.0 or 3.0 cable. The big difference should be in data transfer. I never charge my Note 3 over USB 3.0 cable, always the 2.0 cables that I have all over the place. Strange thing is that it charges consistently faster than my Galaxy Nexus on the same cable/charger.
Rick
Galaxy charging current lite works fine for me. The cable makes no difference at all. Good quality cables should charge at 1800mA from the charger regardless of whether they are USB 2.0 or 3.0. This translates to a little over 2 hours charge time.
From a USB port either cable will only see 450mA unless you insert an inline adapter designed to make the note think it is connected to a Galaxy charger.
CraigAmey said:
Galaxy charging current lite works fine for me. The cable makes no difference at all. Good quality cables should charge at 1800mA from the charger regardless of whether they are USB 2.0 or 3.0. This translates to a little over 2 hours charge time.
From a USB port either cable will only see 450mA unless you insert an inline adapter designed to make the note think it is connected to a Galaxy charger.
Click to expand...
Click to collapse
Just uninstalled and -reinstalled the app, now it's working. coo
How is the current for charging detected?
Differenc in charging time depends on a higher charging current.
The current of 500 mA for USB 2.0 and 900 mA USB 3.0 to my knowledge only for the Device = Note supplying power to external Devices like USB-Sticks (e.g. Memory or DVB-T), Hardrives and so on. It does not specify in regard to using a USB plug as charger nor the the current it charges the notes with. I am wondering how the current detection between the original Galaxy or Nexus charger and any other charger, USB-Hub or computer port is done.
When you compare µUSB-B 2.0 to 3.0 connection http://en.wikipedia.org/wiki/USB_2.0#2.0 and here http://en.wikipedia.org/wiki/USB_3.0 youls find that the USB 2.0 µUSB-B has the same connection as the µUSB-B 2.0 (note http://en.wikipedia.org/wiki/USB_3.0identifies 11 Pins for µUSB-B which seems incorrect because Pin 5 has to be ground to be backwards compatible).
The additional 5 Pins are only for the 4 USB 3.0 Data-Lines and ground.
If you look into the USB-A connector in the charger you'll see also only 4 Pins like in any other female USB-A 2.0 connector, so using a µUSB-B 3.0 can't be the reason.
I'll edit this as I have more things to test. All using Galaxy Charging Current Lite app
Charging current:
OEM USB 3.0 cable + wall charger = 1200
OEM USB 3.0 cable on PC USB 2.0 port = 450
Monoprice USB 2.0 cable + OEM samsung wall charger = 1200
Monoprice USB 2.0 cable on PC USB 2.0 port = 450
Mine charges faster with the stock USB 3.0 cable. This is incredibly fast compared to the Note 2 charging cycle.
Sent from my SM-N9005 using xda app-developers app
OK here are myvalues Charging Current Lite app displayed charging current:
Samsung USB 3.0 cable with
Samsung wall charger = 1200
USB 3.0 10 port Hub-charging port = 1200
USB 3.0 10 port Hub = 450
USB 3.0 Elitebook 8560 = 450
USB 3.0 Cable with USB-A 3.0 to µUSB-B Adaper = 1200
So it's not the cable that makes the difference.
snn47 said:
OK here are myvalues Charging Current Lite app displayed charging current:
Samsung USB 3.0 cable with
Samsung wall charger = 1200
USB 3.0 10 port Hub-charging port = 1200
USB 3.0 10 port Hub = 450
USB 3.0 Elitebook 8560 = 450
USB 3.0 Cable with USB-A 3.0 to µUSB-B Adaper = 1200
So it's not the cable that makes the difference.
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I'm getting similar results.
USB2.0 cables same as USB3.0 cables as far as charging goes.
Also regardless of plugging into USB3.0 port or USB 2.0 port on computer, still pulling only 450.
Using OEM samsung 3.0 cable, and amazon 3.0 cable.
OEM samsung 2.0 cable, monoprice 2.0 cable.
Oh, and it will charge at 1800 using both a USB 2.0 and 3.0 if the screen is off (turn screen off, plug charger in, turn screen on open galaxy charging current lite and it will display 1800 until refreshed).
I had the time to check the AC consumption of both the Note 2 and Note 3 PS, both are with the Note off ~11 W independent of cable used.
When the battery was fully charged at 100% and the power consumption was arround 6 W, I started the Current Lite app and it displayed a charging current of 1200 mAh even so the battery was charged? Something is wrong with the displayed value if the battery is fully charged, unless it's supposed to be only the current supplied to the Note. Then why does it not correlate to the AC-power meassured?
I looked at the voltage of the Note 3 PS and noted it's 5.3V while the Note 2 PS is the standard 5 V.
If I find time i will built an adapter and check if the voltage is true DC or if there is some other signal imposed.
Or do the Notes PS initiate some kind of data transfer to let the Notes know its the original charger that can supply higher current.
Any ideas or input.
Isn't snapdragon 800 on the note 3 suppose to have some sort of quick charging feature, that when used with the factory cables should increase charging speeds?
I could detect at best a few 100 Mw difference difference between charging with the OEM cable and any other USB 2.0 or 3.0 cable with µUSB adapter or when I used an adapter to µUSB.
Car Charger
Sorry, but I can't seem to find the right answer.
I need to charge my phone whilst being used in my aircraft.
Using a USB 2.0 cable on the Note 3 supplied charger, I only get 450mA.
Will it charge faster if I install a 2A car charger in my aircraft and use a USB 3.0 Note 3 cable?
Regards,
Erich
I use a 2 Amp charger in my spaceship and it can be used to monitor the ecu while still providing enough power for the phone to charge.
You just need to be sure that the charger actually deliver 2 Amp and not 500mah
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