USB 3.0 Charging - Galaxy Note 3 Q&A, Help & Troubleshooting

The Note 3 is the first phone to come with USB 3.0 support, the cable and connector are up to spec.
What I'm wondering if this helps with the charging speed, as the wall charger doesn't seem to be with a USB 3.0 connector.
Does anyone have any insight to this?
Sent from my SM-N9005 using Tapatalk

The wall charger has a 2Ah power output while a pc usb 3.0 port has a maximum output of 900mAh. If you use an USB 2.0 port it's only 500mAh.
The best way to recharge the Note 3 is to use the wall charger.

s1m4an said:
The Note 3 is the first phone to come with USB 3.0 support, the cable and connector are up to spec.
What I'm wondering if this helps with the charging speed, as the wall charger doesn't seem to be with a USB 3.0 connector.
Does anyone have any insight to this?
Click to expand...
Click to collapse
From a dedicated charger the final charging current is normally determined by the PHONE + CHARGER based on how the phone "recognizes" the charger as good/bad (and what battery level you already have + how warm the battery is) and how much power the charger can provide. I believe the max that I have seen on my Note 3 was 1800 mA (which worked with both USB3 cables but also with some good USB2 cables).
From a PC the charging current is the result of a more complex negotiation, the phone can still have "the last word" but it can not go over 500 mA on USB2 or 900 mA on USB3.
Somehow related - please note that on USB3 DATA you STILL need to MANUALLY enable USB3 mode EVERY TIME YOU PLUG TO THE PC. Even if enabled the mode will be reset to USB2 in 10 minutes and lost if you remove and plug-in again. That being said on my Thinkpad I have not seen it charging over 450 mA even when on USB3 under Win7 (but the speed difference exists, so USB3 is correctly triggered).
Also please note that the life of the battery can be heavily influenced by the charging current - the smaller the charging current the more cycles the battery will last on the very long term. Also high temperatures are pretty bad for the battery. So if you are in no hurry it is always better to charge with a small USB2 current that is guaranteed to not go over 500 mA.

Maybe I wasn't clear enough, I'm wondering if the wall charger is utilizing the USB 3.0 capability, and if there's any advantage of using the USB 3 cable over a regular micro USB cable.
Sent from my SM-N9005 using Tapatalk

No, there is not. The Note 3 has a USB 3.0 port, but it is only faster for data transfer. Charging is done at 2.0 speed, not 3.0. Regardless of what you attach it to, it charges just as fast as a 2.0 device.

TheBeast1981 said:
The wall charger has a 2Ah power output while a pc usb 3.0 port has a maximum output of 900mAh. If you use an USB 2.0 port it's only 500mAh.
The best way to recharge the Note 3 is to use the wall charger.
Click to expand...
Click to collapse
What if you used a USB 2.0 cable with the 2Ah AC adapter? Would it still charge in "USB 3.0" mode and not give you a message to use a USB 3.0 cable?
I have my old 1Ah car charger and when I use a USB 2.0 cable, the phone says to use the USB 3.0 cable for faster charging.
But, looking at this pinout:
http://commons.wikimedia.org/wiki/File:USB_3.0_Micro_B_plug.PNG
It seems like only the USB 2.0 section is providing the power?
It's utterly confusing. Would be nice if someone who really knows this stuff explain how it works?
---------- Post added at 09:58 AM ---------- Previous post was at 09:56 AM ----------
ShadowLea said:
No, there is not. The Note 3 has a USB 3.0 port, but it is only faster for data transfer. Charging is done at 2.0 speed, not 3.0. Regardless of what you attach it to, it charges just as fast as a 2.0 device.
Click to expand...
Click to collapse
What's strange is that I have a car charger that is 1.0Ah. When I use a USB 2.0 cable, the phone tells me to use a USB 3.0 cable for faster charging.
When I use a USB 3.0 cable, the message does not appear.
But I'm thinking that the car charger can only put out 1.0Ah regardless of the cable that is used?

Related

[Q] Will Transformer charge via USB 3.0 on mobo?

Hi,
Just as the title says, but does the transformer charge via the usb 3.0 ports on some modern motherboards?
Or will it only charge in sleep from those as well. I seem to remember reading that usb 3 had a larger power output, but I cant be sure.
It seems to get a little juice from my GA-EP45T-USB3P - but just a little bit.
-bZj
It should charge at about the same speed as a USB port. The only reason ASUS uses a USB 3.0 cable is so that the AC adapter can deliver 15 (instead of the usual 5v USB) volts over the extra USB 3.0 pins. USB 3.0 ports can deliver 900mA (vs 500mA on 2.0 ports) but that is probably less than the discharge rate of the TF with the screen on.

What Micro USB cable that provide fast charging?

Hi,
I bought PowerGen 3.1A Wall Charger, when I use with original Micro USB cable that come with my Samsung Galaxy S4, the charging current is 1.9A, when I use with a generic USB cable, the charging current is only 700mA. (I have a way to test the charging current)
Does anyone know which Micro USB cable that carry fast current, such as 1.9A like original USB Cable that come with S4, or even better, carry up to 3.1A that this Wall charger provides?
Thanks All.
TuanBaoNguyen said:
Hi,
I bought PowerGen 3.1A Wall Charger, when I use with original Micro USB cable that come with my Samsung Galaxy S4, the charging current is 1.9A, when I use with a generic USB cable, the charging current is only 700mA. (I have a way to test the charging current)
Does anyone know which Micro USB cable that carry fast current, such as 1.9A like original USB Cable that come with S4, or even better, carry up to 3.1A that this Wall charger provides?
Thanks All.
Click to expand...
Click to collapse
Faster charging is enabled in the kernel, not by a cable bro.
Hi,
you have to look for custom kernel with fast charging support. I am using faux123 with fauxclock app.
Read this http://forum.xda-developers.com/showthread.php?t=2273437.

Car Charger?

Does anyone have a confirmed working car charger for this phone?
My motorola car charger that I used for my GNex and GS3 isn't fully compatible with the G2. I get a message saying "slow charging" when I plug it in.
What do you guys use to achieve full charging speeds?
I realize there's a Q&A forum, but since this is directly related to accessories, I wasn't sure if it was better suited for this forum.
Nobody has a working car charger?
Both of these work for me.
http://www.amazon.com/gp/product/B0042B9U8Q/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
http://www.amazon.com/gp/product/B006SU0SX0/ref=oh_details_o03_s00_i01?ie=UTF8&psc=1
the powerjolt is much more low profile though
That's just a generic list. The G2 requires a hi power charger
jeff_warner said:
Hi check out this collection of car charger for LG G2...they all are compatible with LG G2 and wont create any issue of slow charging and all...you can avail any of them for free shipping too...
Thanks !!!!
Click to expand...
Click to collapse
Sent from Bad Azz VZW LG G2 Cyan Tapatalk
beddachedda said:
Both of these work for me.
http://www.amazon.com/gp/product/B0042B9U8Q/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
http://www.amazon.com/gp/product/B006SU0SX0/ref=oh_details_o03_s00_i01?ie=UTF8&psc=1
the powerjolt is much more low profile though
Click to expand...
Click to collapse
The powergen dual port works great. It has two 2.1amp USB ports, one that works with Android, and the other with Apple products (when using a data cable --> detecting USB vs AC charge mode). I have custom USB cables where I shorted the data pins so I always pull at AC charge rates regardless of the port type. In any event, this charger should provide you with the same capability as the OEM wall charger.
I have a 2amp car charger and it works fine, no message about slow charging.
the issue im runnin into is find a usb cable that enables fast charging
i have a dual usb car charger that put out 2amps per usb but cant.find an aftermarket usb to micro that can support more amps (fast chargin)
the oem lg g2 cable works...as well as the nexus 7 cable
i got this cable but doesnt charge more than 1amp
http://www.amazon.com/gp/aw/d/B004G...c=1&redirect=true&ref_=oh_details_o01_s00_i02
---------- Post added at 10:01 AM ---------- Previous post was at 09:54 AM ----------
kyler13 said:
The powergen dual port works great. It has two 2.1amp USB ports, one that works with Android, and the other with Apple products (when using a data cable --> detecting USB vs AC charge mode). I have custom USB cables where I shorted the data pins so I always pull at AC charge rates regardless of the port type. In any event, this charger should provide you with the same capability as the OEM wall charger.
Click to expand...
Click to collapse
how do u short the data pins?
nitric13 said:
the issue im runnin into is find a usb cable that enables fast charging
i have a dual usb car charger that put out 2amps per usb but cant.find an aftermarket usb to micro that can support more amps (fast chargin)
the oem lg g2 cable works...as well as the nexus 7 cable
i got this cable but doesnt charge more than 1amp
http://www.amazon.com/gp/aw/d/B004G...c=1&redirect=true&ref_=oh_details_o01_s00_i02
---------- Post added at 10:01 AM ---------- Previous post was at 09:54 AM ----------
how do u short the data pins?
Click to expand...
Click to collapse
To short the data pins, I actually cut a USB cable, stripped back the insulator, re-soldered the +5V and ground wires, soldered together the data pins on the microUSB side of the cable, and stagger cut the data wires on the other side. Prior to the re-soldering, I slipped some shrink tubing on one end of the cable to re-insulate everything. Not for the faint of heart.
Background for those that don't know... Typically, Android phones look for little to no resistance on the data pins to detect a high current charger. Any other load triggers USB mode since most PC's are only designed to supply 500mA via USB. I assume this is a safety issue to prevent overdrawing a PC's port. Apple operates differently. They look for some nominal resistance as USB and switch to fast charge under open or some higher resistance. Most chargers >500mA are designed for the iPhone market unless they explicitly state other compatibility. Therefore, the data pins are floating. Any charger can be used at its max rating if you trick the Android phone with the homemade cable described above. Of course, then it becomes a power-only cable, useless for data. Clearly, OEM chargers for Android phones short the data pins internally so your OEM cable can be used with a wall charger (fast) or with your PC for data connections and nominal (slow) charging.
So the powergen mentioned above has two 2.1A ports, one labeled NA (non-apple) and A (apple) so you don't need to worry about mix-n-match devices and cables. Any USB cable will fast charge on the appropriate port. With my homemade cable above, my Galaxy Nexus will fast charge on either port.
Fast forward to the G2... Just got it yesterday and while in the car, I noticed my homemade cable only permitted SLOW charge on either port. Huh. Kinda a head scratcher. I ran in the house and got the OEM LG cable and both ports worked with FAST charge. So I tried one more thing, I grabbed a regular USB cable and observed the following: the phone went into FAST charge on the apple port and SLOW charge on the non-apple port. I can only assume that LG is detecting fast charge in a different way. The fact that a standard USB cable doesn't work with the data pins shorted at the charger but the OEM cable does makes me think there is something about LG's cable that allows it to pull max power from the charger. FYI, I plugged the OEM LG cable into a 850mA Motorola AC charger and it registered as SLOW charge.
kyler13 said:
To short the data pins, I actually cut a USB cable, stripped back the insulator, re-soldered the +5V and ground wires, soldered together the data pins on the microUSB side of the cable, and stagger cut the data wires on the other side. Prior to the re-soldering, I slipped some shrink tubing on one end of the cable to re-insulate everything. Not for the faint of heart.
Background for those that don't know... Typically, Android phones look for little to no resistance on the data pins to detect a high current charger. Any other load triggers USB mode since most PC's are only designed to supply 500mA via USB. I assume this is a safety issue to prevent overdrawing a PC's port. Apple operates differently. They look for some nominal resistance as USB and switch to fast charge under open or some higher resistance. Most chargers >500mA are designed for the iPhone market unless they explicitly state other compatibility. Therefore, the data pins are floating. Any charger can be used at its max rating if you trick the Android phone with the homemade cable described above. Of course, then it becomes a power-only cable, useless for data. Clearly, OEM chargers for Android phones short the data pins internally so your OEM cable can be used with a wall charger (fast) or with your PC for data connections and nominal (slow) charging.
So the powergen mentioned above has two 2.1A ports, one labeled NA (non-apple) and A (apple) so you don't need to worry about mix-n-match devices and cables. Any USB cable will fast charge on the appropriate port. With my homemade cable above, my Galaxy Nexus will fast charge on either port.
Fast forward to the G2... Just got it yesterday and while in the car, I noticed my homemade cable only permitted SLOW charge on either port. Huh. Kinda a head scratcher. I ran in the house and got the OEM LG cable and both ports worked with FAST charge. So I tried one more thing, I grabbed a regular USB cable and observed the following: the phone went into FAST charge on the apple port and SLOW charge on the non-apple port. I can only assume that LG is detecting fast charge in a different way. The fact that a standard USB cable doesn't work with the data pins shorted at the charger but the OEM cable does makes me think there is something about LG's cable that allows it to pull max power from the charger. FYI, I plugged the OEM LG cable into a 850mA Motorola AC charger and it registered as SLOW charge.
Click to expand...
Click to collapse
I have pretty much the same thing, had a cable that would only do slow charge, so I stripped the wires back, and on the micro usb side I cut the green and white(data) and twisted them together. Now its fast charge no matter what charger I plug this cable into.... not sure why urs isn't....
My AT&T branded charger doesn't give me the slow charge notification.
Sent from my LG-D800 using Tapatalk 4
droidiac13 said:
My AT&T branded charger doesn't give me the slow charge notification.
Sent from my LG-D800 using Tapatalk 4
Click to expand...
Click to collapse
Yes, but its not a 2 amp charger. We want a bigger fast charge vehicle charger...
I tried the USB plug in my car (Scion 2012) and two different Belkin cigarette/USB chargers today. The USB and one of the Belkins gave slow charging. The other Belkin did not -- worked fine. They were supposed to be identical, but I had suspected one was a fake. Guess I was right.
I just use the usb cable that came with their phone and plug it into my auto usb or the car's 110 outlet.
Sent from my VS980 4G using Tapatalk 4
Tylt. Flat ribbon charger works.
Sent from Bad Azz VZW LG G2 Cyan Tapatalk

Do we see TRUE USB 3.0 speeds if charging in a car via cigarette lighter?

I've been wondering this for awhile now, but never have found an answer. I know that when these phones are hooked up to a wall outlet with the included Samsung charger and cable that came in the box, that it will be charging at the faster USB 3.0 speeds. My question is... Will we still be getting TRUE USB 3.0 charging speeds when we have the included Samsung USB 3.0 cable hooked up to an adapter in the car via the cigarette lighter? Or do we have to purchase a separate USB 3.0 car charging adapter in order to achieve TRUE USB 3.0 charging speeds while charging in the car?
Thanks!
jsdecker10 said:
I've been wondering this for awhile now, but never have found an answer. I know that when these phones are hooked up to a wall outlet with the included Samsung charger and cable that came in the box, that it will be charging at the faster USB 3.0 speeds. My question is... Will we still be getting TRUE USB 3.0 charging speeds when we have the included Samsung USB 3.0 cable hooked up to an adapter in the car via the cigarette lighter? Or do we have to purchase a separate USB 3.0 car charging adapter in order to achieve TRUE USB 3.0 charging speeds while charging in the car?
Thanks!
Click to expand...
Click to collapse
no you will get very slow speed unless its usb 3 if you get ,galaxy charging current lite on google play you will see
on main charger i get 1250
samsung car charger 650
usb 2 on pc 450
USB... Has no relevance when using a charging only port. Only the max amps of the port is important. I built my own charger with a 3a usb, I get the 1.2amps. Read the max amps of your car charger, on the back.

[Q] Does the USB 3.0 cable charge faster via AC?

I suspect I know the answer to this, but I just wanted to get confirmation.
I was originally led to believe that the Galaxy S5's included USB 3.0 charging cable allows faster charging than a USB 2.0 cable. Upon thinking it over, the 3.0 cable should really only provide faster charging compared to USB 2.0, and only when plugged into a USB 3.0 computer port.
When using the same USB 3.0 cable via an AC wall adapter, the power output of the wall adapter should be the only thing that really determines the charging speed: Fast charging with a 2-amp wall adapter, slower charging with a 1-amp adapter; whether the cable is USB 2.0 or 3.0 should not matter.
Am I correct here?
The USB 3 cable provides only extra data lanes no extra charging speed. The AC charger will charge at 2amp and on PC you are likely to get not much better than 450mili Amp.

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