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.
Click to expand...
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
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@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...
Related
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!
Since the Atrix charges extremely slow via regular USB 2.0 port, I was wondering if something like this might help?
http://www.amazon.com/StarTech-USB2HABMY6-Cable-External-Drive/dp/tech-data/B003HHK58U
The problem with USB 2.0 is that it's only 500mA while the wall charger is 850mA. With this, I would assume we'd get a full 1A.
Has anyone ever tried something like this? I'd like to know if it works.
A trickle charge is always better for battery life but if a quick charge is what you are looking for then you can try but not sure if it will give you any more power because of the phone itself. See Below.
"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 2.0 the voltage supplied by low-powered hub ports is 4.4 V to 5.25 V.
A unit load is defined as 100 mA in USB 2.0, and was raised to 150 mA in USB 3.0. A maximum of 5 unit loads (500 mA) can be drawn from a port in USB 2.0, which was raised to 6 (900 mA) in USB 3.0. There are two types of devices: low-power and high-power. Low-power devices draw at most 1 unit load, with minimum operating voltage of 4.4 V in USB 2.0, and 4 V in USB 3.0. High-power devices draw the maximum number of unit loads supported by the standard. All devices default as low-power but the device's software may request high-power as long as the power is available on the providing bus.
Some devices like high-speed external disk drives may require more than 500 mA of current and therefore cannot be powered from one USB 2.0 port. Such devices usually come with Y-shaped cable that has two USB connectors to be inserted into a computer. With such a cable a device can draw power from two USB ports simultaneously."
RatTub said:
Since the Atrix charges extremely slow via regular USB 2.0 port, I was wondering if something like this might help?
http://www.amazon.com/StarTech-USB2HABMY6-Cable-External-Drive/dp/tech-data/B003HHK58U
The problem with USB 2.0 is that it's only 500mA while the wall charger is 850mA. With this, I would assume we'd get a full 1A.
Has anyone ever tried something like this? I'd like to know if it works.
Click to expand...
Click to collapse
Already covered multiple times!
Do some research. USB 3.0 has been out for a long time, and does supply up to 900mA as was said in the 1st response. It's also a powered USB port, where 2.0 is not!
CaelanT said:
Already covered multiple times!
Do some research. USB 3.0 has been out for a long time, and does supply up to 900mA as was said in the 1st response. It's also a powered USB port, where 2.0 is not!
Click to expand...
Click to collapse
I've actually searched quite a lot before posting and found nothing even related to this. Sure, people talked a lot about the difference between the wall charger and a regular USB port. However, my question was specific to USB 2.0 the cable in question.
Either way, thanks for your input.
@CaelanT Good luck finding a Usb3 micro connection that fits a usb2 micro connection. Not to mention atrix would put it on usb2 mode if you could.
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Can anybody recommend an external power pack that works with the flyer/view? I was looking at this:
http://www.amazon.com/New-Trent-IMP...FO/ref=sr_1_20?ie=UTF8&qid=1324398340&sr=8-20
It will work with your Flyer, but it will charge much slower than the HTC power cord due to the USB connector. It may or may not keep your unit powered during normal use depending the way you use your device since the current supplied will be limited by the standard USB cable (~500ma) vs. the propriety HTC charging cable (1200 ma). I would test by powering your Flyer off a standard PC USB port and see, This should be roughly equal to what this device will supply.
Hmm, me thinks I just spotted hardware hack number 3.
globatron said:
Hmm, me thinks I just spotted hardware hack number 3.
Click to expand...
Click to collapse
lol
This would be great please keep us updated
I picked up a Dreamgear iSound 8000 ma model on sale from expansys, seemed like a nice unit and was supposed to be able to push 2amp but it's no faster with the HTC cable than a regular generic microUSB cable hooked up to a usb port. The biggest drawback was the thing completely died on me before the first cycle, I mean DEAD, won't charge and the flashlight doesn't even work. So much for on sale, return shipping $$.
Neil
As I posted previously in this thread it does not matter what current the source supply can provide. The cable is the magic. Standard cable, standard charge rate of 500ma which is about 30% of what the HTC charger will give you
DigitalMD, reread his post. He clearly states that using both the HTC flyer cable, as well as a standard micro USB, gives him no difference. So while your conjecture that "it does not matter what current the source supply can provide. The cable is the magic." is interesting, it is not, in fact, entirely accurate. Perhaps the cable is "the magic" in certain environments, but clearly not all.
No conjecture at all, in this case it is a fact. The Flyer cable has extra pins and conductors that are not in a standard USB cable. This tells the Flyer when a power supply is connected vs. a standard USB and the Flyer then allows for higher charging rate. Whit out that special cable, it will only charge at 500ma or aprox. 30% of the HTC power supply rate.
Actually less than that even. The htc charger runs at ~9v > 1amp. A lithium battery can rapid charge in the range of 900mA to 1.2A depending on the cell(s) in the battery.
There are two cells or two packs (can't tell which on visual inspection) in the flyer battery running in parallel. A proper htc charger running at 1A provides approximately 10W of charging power, a 5 volt source running at 500mA provides 2.5W so the USB charging will be 4 times slower.
As discussed in another thread shorting USB D+ and D- will allow the flyer to recognise a wall charger and charge at 5v 900 mA, the same could be applied to a battery pack capable of providing 900 mA sustained. It wouldn't be as quick as the wall charger but it is probably enough to provide for charging while using the device, rather than just slowing discharge.
On the question of leads, using a htc cable or standard micro USB makes no difference by default. When connected to a USB socket the flyer/view cable behaves like any other USB cable, the wiring modification is done inside the charger for a wall charger, and would most safely be done the same way for a battery pack.
The flyer internally uses a threshold voltage plus the D+ and D- pins to determine if it is charging from 5v or the dedicated higher voltage wall charger.
yes your post is a more accurate explanation, thanks
Thanks for the input. I will give that one a try and take my View cable with me. I have long road trip coming up.
Have you ever wondered how an EP800 compares to an EP850, or an iPad charger? I have. Reading the comments on the forum there is a lot of subjective opinion, but little in the way of facts. With this in mind I decided to make a little app to measure how long it takes the phone to charge from 20% to 80%.
20% was chosen as the start because readings below this have a high uncertainty
80% was the ceiling because the Xperia shows down charging somewhere around 90% to protect the battery.
I wanted to ensure I was measuring the charger at its peak output.
So far I have done 3 runs:
EP800 (rated 850ma) with normal USB cable, 8845 seconds (est 427ma)
HTC B250 (rated 1000ma) with normal USB cable, 7910 seconds (est 477ma)
Unbranded (rated 1500ma) with "data" cable 3120 seconds (est 1211ma)
My current suspicion is that the charger is not as important as we have previously believed, it could be all about the cable. I will run some more tests over the next week using the same charger with different cables.
In the meantime, if anyone wants to give it a go, my app is available here
https://play.google.com/store/apps/details?id=com.vexedbadger.chargertimer
(once Google gets around to approving it)
and my latest results are here
http://vexedbadger.com/?page_id=97
But I will keep this thread updated until I reach a satisfactory conclusion.
I am also eagerly anticipating the EP851. I wonder just how good its boost charge feature is. Could it simply be a normal 2A charger with pins 2 and 3 bridged?
If you do give the app a try, post your results here.
-----------------------------------------------------
For newcomers to this thread I believe I have made an important discovery. I ran a test using a HTC B250 1A charger. I did it first using a normal USB cable. I then repeated it using a USB charge cable (2 wires, no data lines) and got these results
Data Cable, 7910 seconds, est 477 ma
Charge Cable, 3530 seconds, est 1071ma
In other words the cable you chose to run between your charger and the phone is absolutely critical in determining the charge speed. Here I have observed over a 100% speed increase.
Using the supplied EP800 (850ma)
Data Cable, 8845 seconds, est 417ma
Charge Cable, 5170 seconds, est 731ma
Again, a huge difference.
Oh, and the BlackBerry Playbook charger is a beast.
I have just done a run with the BlackBerry Playbook charger HDW 34625 (2000ma).
20-80 in 2875 seconds. That means approx 1314ma output. An estimated 0-100 in 1hour 20 minutes.
I have a new charger of choice : )
Nice find, but is it good to charge the battery like that ?
I suspect you're correct OP.
I charge mine with a 1A iPod charger with an x10 cable + 8M Extension cable(sockets only on one side of the room), with that charging is pretty slow. Tried it without the extension but it wasnt noticeably faster. Then one time I used a 15cm USB Micro cable from an unknown device on the front USB port of my desktop(500ma maybe, probably less) and it was insanely fast.
So yeah, think its the cable.
LahiruRD said:
Nice find, but is it good to charge the battery like that ?
Click to expand...
Click to collapse
My guess is that Sony know a thing or two about batteries. They control the amount of charge passed to the battery. A very conscious decision is made at 90% to reduce the power flow to the battery. I am happy to chuck as much power as I can at it.
Also remember that Sony are about to release the EP851, a high speed charger.
If I remember correctly if you connect only the power cables within a USB cable the maximum you will get from most devices is 500ma. If you connect all 4 cables as a regular USB data cable, the 2 devices communicate and then the phone will ask for maximum current from the USB host. This could be several amps. This is why there is a variations in charging times. Try several different cable on the same port, then try them all again charging from different hosts, ie. OEM USB charger, computer usb port, other USB chargers.
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defsix said:
If I remember correctly if you connect only the power cables within a USB cable the maximum you will get from most devices is 500ma. If you connect all 4 cables as a regular USB data cable, the 2 devices communicate and then the phone will ask for maximum current from the USB host. This could be several amps. This is why there is a variations in charging times. Try several different cable on the same port, then try them all again charging from different hosts, ie. OEM USB charger, computer usb port, other USB chargers.
Sent from my LT26i using xda premium
Click to expand...
Click to collapse
I think you are close top the answer there. The USB 2.0 spec says 500ma per port. This spec was written long before charging smartphones via generic USB cables became the norm. Some manufacturers now offer high ampage ports on the motherboards. I know Apple does, my aBit one does and a few gigabit ones do.
The phone tries to detect if it is being charged from a computer USB port where it is capped at 500ma, or from a power supply that supports more than this. There are two conventions that I know of. Apple puts a resistor between pins 2 and 3 (the data pins). IF this resistor is present hen the device charges at full power. HTC (and a few others) rely solely on pins 2 and 3 being bridged. I think this is the USB standard as well. Some batter apps will tell you if the detected charger is in AC (high ampage) or USB (capped) charge mode. The speed difference is pretty dramatic.
Some cables come with pins 2 and 3 pre-bridged. They are no good for syncing but great for charging. I am running some tests with one now.
Interesting app, I have a bunch of random USB chargers and such floating around. I use as my standard charger the 850, but I have wondered if I can get better charge from the piles of other chargers floating around.
I also have a BlackBerry bold charger (direct connection to phone via fixed USB cable) do you think that could perform better? I guess I will test it out first.
Thanks again for your useful apps! I used the nfc one and love it
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I wonder why no smartphone now uses USB3.0
Allows maximum 5A and 1.5A when communicating+charging.
richteralan said:
I wonder why no smartphone now uses USB3.0
Allows maximum 5A and 1.5A when communicating+charging.
Click to expand...
Click to collapse
Yes, I'm asking the same question
I'd love to charge my XS really fast via my USB 3.0 port
Sent from my LT26i using XDA
richteralan said:
I wonder why no smartphone now uses USB3.0
Allows maximum 5A and 1.5A when communicating+charging.
Click to expand...
Click to collapse
5 Amps? Wow, that would be 25W put into a battery so you have a smoke machine as well ;-)
Multi-purpose charger
Pezo said:
5 Amps? Wow, that would be 25W put into a battery so you have a smoke machine as well ;-)
Multi-purpose charger
Click to expand...
Click to collapse
yeah 5A maximum....
I think 1.5A~2A is more than enough for now comparing the mere 500mA USB2.0 provides.
Pezo said:
5 Amps? Wow, that would be 25W put into a battery so you have a smoke machine as well ;-)
Multi-purpose charger
Click to expand...
Click to collapse
I have a usb3 pci card on order. I will post some test results when it does, but that will probably be June. In the meantime I am seeing a very noticeable difference using a charge cable. To the poster with the blackberry charger, I think that will leave your Sony charger standing
BigPhil said:
I have a usb3 pci card on order. I will post some test results when it does, but that will probably be June. In the meantime I am seeing a very noticeable difference using a charge cable. To the poster with the blackberry charger, I think that will leave your Sony charger standing
Click to expand...
Click to collapse
I have a USB 3.0 port, will do some tests on charging time between my USB 3.0 and USB 2.0 port
Will post the results as soon as I have them
I have just ran a test using my HTC 250 with a charge cable. THis is a charger I have previously tested with a normal data cable
Data Cable, 7910 seconds, est 477 ma
Charge Cable, 3530 seconds, est 1071ma
In other words the cable you chose to run between your charger and the phone is absolutely critical in determining the charge speed. Here I have observed over a 100% speed increase. Will update the first post with these findings.
XS in for repair but gonna do this with my x10 now for ****s and giggles.
5 Amps?
U mean volts...
Usb 3.0 is max 900mA = 0.9 Amps.
Efe64 said:
5 Amps?
U mean volts...
Usb 3.0 is max 900mA = 0.9 Amps.
Click to expand...
Click to collapse
Battery Charging Specification 1.2[12]: released in December 2010. Several changes and increasing limits including allowing 1.5A on charging ports for unconfigured devices, allowing High Speed communication while having a current up to 1.5A and allowing a maximum current of 5A.
richteralan said:
Battery Charging Specification 1.2[12]: released in December 2010. Several changes and increasing limits including allowing 1.5A on charging ports for unconfigured devices, allowing High Speed communication while having a current up to 1.5A and allowing a maximum current of 5A.
Click to expand...
Click to collapse
So having a current up to 1.5 A or maximum current of 5A, which one is it?
My guess is that the second one meant volts.
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FenrirMX said:
So having a current up to 1.5 A or maximum current of 5A, which one is it?
My guess is that the second one meant volts.
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No. The second one means 5A, if you bothered to read the specification whitepaper.
And my post explains clearly the difference between 1.5A and 5A current:
1.5A for "UNCONFIGURED DEVICES", and "HIGH SPEED COMMUNICATION WHILE HAVING A CURRENT UP TO 1.5A"
5A is the MAXIMUM ALLOWED CURRENT.
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.
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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.
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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.
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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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Click to collapse
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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