Coming from the Galaxy Nexus where I had Fast Charge via USB allowing me to pull 1A from the USB port vs the .5A. My Note2 is rooted, does anyone know how to enable this or do we need to wait for a cutom kernel? Thanks!
If you look at the included wall charger, it's rated at 2 Amps. So it may not need the fast charge option.
I think he's referring when hooking the USB to a computer. That is always a slower charge.
You need a custom kernel that supports it.
FAUguy said:
If you look at the included wall charger, it's rated at 2 Amps. So it may not need the fast charge option.
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Click to collapse
The Fast Charge enables the phone to pull more power out of a standard usb port connected a computer not a wall charger.
and forget what I just said because i never refreshed the page to see someone already said that. Thanks!
OK, then you'd have to wait for a custom kernel that would have the feature in it.
I use it on the GS3 with its wall charger. It cuts the charge time in half.
But I've never tried it with charging from a PC's USB 0.5A port.
Related
FWIW, I think I may have traced my recent charging problems to a Belkin USB charger at my office. On this power source, the battery indicates charging from USB, and apparently there's not enough current to keep up with the demand of the device. It discharges continuously with the screen on, and only keeps even with the screen off. The only way to charge with the Belkin is to turn the phone off.
With the included HTC adapter at my home, however (and with a Motorola adapter left over from a previous phone), the Rezound will charge with screen off, and perhaps even a little with the screen on. Allowed to charge overnight, I do not have to turn the device off when using the HTC charger. On this charger, the phone indicates AC power.
Of course, none of this was an issue before I took the ICS leak. Even though I've gone back to GB, I still have the ICS firmware, and I suspect something different in there is affecting charging.
In fact, I wouldn't be surprised if HTC simply lowered charging rates as part of a campaign to deal with widespread heat issues. If you were trying to cool the phone, that's definitely something you would consider tweaking.
For sure, it's a known issue, some chargers give the full 1A ( the phone indicates AC charging) and some only give 400ma or less (USB Charging).
Search around for chargers and there's good discussion on AC adapters that work well, and even how to modify a USB wall/car charger to give a full AC amount.
Both my gigabyte and msi motherboards are able to deliver up to 1.5A via the USB ports, and are even able to charge my phone (or tablet) when the computer is OFF.
a.mcdear said:
Both my gigabyte and msi motherboards are able to deliver up to 1.5A via the USB ports, and are even able to charge my phone (or tablet) when the computer is OFF.
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Click to collapse
for sure, but i bet your phone is only commanding 500ma from it since the phone is usb 2.0 spec... I too have a power port on my laptop to charge things when the laptop is off but it doesn't get over usb 2.0 spec because of the phone :x
I've tried everything, short of trying to make, or looking for, customized drivers to overload it.
thatsricci said:
for sure, but i bet your phone is only commanding 500ma from it since the phone is usb 2.0 spec... I too have a power port on my laptop to charge things when the laptop is off but it doesn't get over usb 2.0 spec because of the phone :x
I've tried everything, short of trying to make, or looking for, customized drivers to overload it.
Click to expand...
Click to collapse
You might be right when it comes to the Rezound, but I know for a fact that it is capable of supplying more than 500mA to some devices for charging. It charges my TF101 even with the screen on, which every other computer with ordinary USB ports seems incapable of doing. If I plug my TF101 into any other computer with a standard USB 2.0 port, it will still slowly discharge if the screen is on and I'm using it.
Either way, I notice absolutely no difference between charging via USB on my computer or via the actual charger, so I'm relatively sure the USB port IS outputting at least the full 1A that the actual charger is rated at, and I am NOT using a kernel with the "fast charge" mod..
I haven't really spent much time noticing how slowly the Rezound would charge on a regular USB 2.0 port. Maybe I'll give it a shot on my laptop tonight just to test it out.
Or, a simple ammeter would probably put the issue to rest definitely.. I wonder if I know anybody with one I could use.....
a.mcdear said:
You might be right when it comes to the Rezound, but I know for a fact that it is capable of supplying more than 500mA to some devices for charging. It charges my TF101 even with the screen on, which every other computer with ordinary USB ports seems incapable of doing. If I plug my TF101 into any other computer with a standard USB 2.0 port, it will still slowly discharge if the screen is on and I'm using it.
Either way, I notice absolutely no difference between charging via USB on my computer or via the actual charger, so I'm relatively sure the USB port IS outputting at least the full 1A that the actual charger is rated at, and I am NOT using a kernel with the "fast charge" mod..
I haven't really spent much time noticing how slowly the Rezound would charge on a regular USB 2.0 port. Maybe I'll give it a shot on my laptop tonight just to test it out.
Or, a simple ammeter would probably put the issue to rest definitely.. I wonder if I know anybody with one I could use.....
Click to expand...
Click to collapse
Or you could use a battery charging app to verify what rate it is charging at.
Sent from my ADR6425LVW using XDA
nosympathy said:
Or you could use a battery charging app to verify what rate it is charging at.
Sent from my ADR6425LVW using XDA
Click to expand...
Click to collapse
Which app do you use?
thatsricci said:
for sure, but i bet your phone is only commanding 500ma from it since the phone is usb 2.0 spec... I too have a power port on my laptop to charge things when the laptop is off but it doesn't get over usb 2.0 spec because of the phone :x
I've tried everything, short of trying to make, or looking for, customized drivers to overload it.
Click to expand...
Click to collapse
Use a charging only cable, i.e. Naztech Micro USB Charging Cable (sorry, don't remember who initially pointed to this), and the phone will see the source as an outlet and not a usb port.
plcline said:
Use a charging only cable, i.e. Naztech Micro USB Charging Cable (sorry, don't remember who initially pointed to this), and the phone will see the source as an outlet and not a usb port.
Click to expand...
Click to collapse
Well that makes sense, any USB cord without data points can only provide power and therefore the phone wouldn't be able to determine whether its a computers USB port or a charger. When the data pins are present, the phone must request a high-power mode from the computer in order to obtain the full 500mA on standard ports, or 1.5A in the case of some newer boards as I mentioned earlier.
Just looking to confirm what I think I've deduced from the forum.
I can't charge my transformer when it's on or asleep with a standard USB charger, correct? I've invested in 2 different 2.0+ Amp 5V USB supplies and none seem to get the charge going on the Transformer. It sounds like I could turn OFF the unit and trickle charge it (by the way would the 2.0A charger be of any benefit in this circumstance?). It also sounds like the ASUS charger gives off 12V and that's what the Tranformer is expecting to get the charge going, right? If so, I'm definately dissappointed that ASUS went this approach- non-standard. I always like extra chargers for traveling and throughout the house and this has limited me. Anyway, if someone would be so kind as to reply to this and confirm I've read the threads correctly, I'd appreciate it.
The ASUS charger is 15V.
5V isnt nearly enough. If you got it powered OFF, you might be able to get it to full (from empty) in a few days (yes, days).
The TF can be charged normally with 10-15V.
I suggest you read this thread to get some other ideas.
Yea you need a 2 plus amp carger which also is 15 plus volts, and if you want to make your stock charge cable longer you have to use a male+female 3.0 usb cable... a 2.0 usb cant transfer enough power quick enouqh
Sent from my Transformer TF101 using XDA Premium App
nbgorman said:
Yea you need a 2 plus amp carger which also is 15 plus volts, and if you want to make your stock charge cable longer you have to use a male+female 3.0 usb cable... a 2.0 usb cant transfer enough power quick enouqh
Sent from my Transformer TF101 using XDA Premium App
Click to expand...
Click to collapse
So much misinformation in this post...
First... The real wall charger is 15v 1.2A. So the 2 amp is just bs...
Second... A usb 2.0 cable transfer power just as "quick" (wut?) as a usb 3.0.
The reason you need a 3.0 cable is because the charger is looking for connection on a pin only present on a usb 3.0 cable. If you dont use a usb 3.0 cable the wall charger will only send 5V.
This is done this way so you can use the wall charger for other devices apart from the TF.
You can open the charger up and bridge 2 connections to make it send 15v all the time. Then you can use a usb 2.0 cable just fine.
Please, try not to spread false information.
Goatshocker said:
So much misinformation in this post...
First... The real wall charger is 15v 1.2A. So the 2 amp is just bs...
Second... A usb 2.0 cable transfer power just as "quick" (wut?) as a usb 3.0.
The reason you need a 3.0 cable is because the charger is looking for connection on a pin only present on a usb 3.0 cable. If you dont use a usb 3.0 cable the wall charger will only send 5V.
This is done this way so you can use the wall charger for other devices apart from the TF.
You can open the charger up and bridge 2 connections to make it send 15v all the time. Then you can use a usb 2.0 cable just fine.
Please, try not to spread false information.
Click to expand...
Click to collapse
Ahhh i see i read on the android forums that it was because the usb 2 didnt "move enough energy" i didnt realize it was because of a pin in the actual wall charger thanks for clearing that up
Sent from my Transformer TF101 using XDA Premium App
Goatshocker said:
Please, try not to spread false information.
Click to expand...
Click to collapse
I appreciate your knowledge- but please, try not to be a condescending jerk. They obviously didn't KNOW the information was false.
Goatshocker said:
So much misinformation in this post...
First... The real wall charger is 15v 1.2A. So the 2 amp is just bs...
Second... A usb 2.0 cable transfer power just as "quick" (wut?) as a usb 3.0.
The reason you need a 3.0 cable is because the charger is looking for connection on a pin only present on a usb 3.0 cable. If you dont use a usb 3.0 cable the wall charger will only send 5V.
This is done this way so you can use the wall charger for other devices apart from the TF.
You can open the charger up and bridge 2 connections to make it send 15v all the time. Then you can use a usb 2.0 cable just fine.
Please, try not to spread false information.
Click to expand...
Click to collapse
Before you correct people how about you do your research first.
Actually if you read the wall plug it is a 15v 2-1.2A. You can DIY a charger as long as it can produce 11v+ at 1.2A-2A and will trigger the charge functions within the tab. USB 3.0 is only required with the stock charger.
Dynex sold "The Ultimate Charger DX-UA" that had a MAX setting of 11v but when tested actually produced 11.7v at 1.7A. I was able to find one but they are rare now bc they haven't been making them for over a year now. It comes with aton of adapters one being a USB. I use it often without issue.
Also they sell on Ebay USB car charger adapters rated at 12v at 2.0A I own one of these also and it works great with the stock cable.
http://forum.xda-developers.com/showthread.php?t=1087321
For more information.
zedorda said:
Before you correct people how about you do your research first.
Actually if you read the wall plug it is a 15v 2-1.2A. You can DIY a charger as long as it can produce 11v+ at 1.2A-2A and will trigger the charge functions within the tab. USB 3.0 is only required with the stock charger.
Dynex sold "The Ultimate Charger DX-UA" that had a MAX setting of 11v but when tested actually produced 11.7v at 1.7A. I was able to find one but they are rare now bc they haven't been making them for over a year now. It comes with aton of adapters one being a USB. I use it often without issue.
Also they sell on Ebay USB car charger adapters rated at 12v at 2.0A I own one of these also and it works great with the stock cable.
http://forum.xda-developers.com/showthread.php?t=1087321
For more information.
Click to expand...
Click to collapse
+1, I've been using the same charger for about a year myself. Also without any issues whatsover.
You can still find them on eBay occasionally.
Regards.
zedorda said:
Before you correct people how about you do your research first.
Actually if you read the wall plug it is a 15v 2-1.2A.
Click to expand...
Click to collapse
Actually I think youre the one who should read the text on the wall plug.
It clearly says "15v - 1.2A". the 2A is for 5v. Not 15. 5.
digibucc said:
I appreciate your knowledge- but please, try not to be a condescending jerk. They obviously didn't KNOW the information was false.
Click to expand...
Click to collapse
If they don't KNOW whether the information they are posting is true or false, then they shouldn't be posting it at all. That's just common sense.
when i tether to my pc via pdanet, my phone's battery gradually drains(which i'm sure you guys experience also).
has anyone tried out this cable(or one like it)? does it prevent battery drain?
voxigenboy said:
when i tether to my pc via pdanet, my phone's battery gradually drains(which i'm sure you guys experience also).
has anyone tried out this cable(or one like it)? does it prevent battery drain?
Click to expand...
Click to collapse
Yeah, but not as much as a normal charger. The thing is that when connected to PC, to my knowledge, the kernel limits the charge rate even more than the current limit that you get from the the normal charger.
Kernel limits current from wall to say 850mA, even if have a 2000mA charger.
Kernel limits current when connected to the PC to say 500mA, even if you have a Y cable with the power-only leg on a 2000mA charger.
Most USB ports can't even give more than 250mA, even though the USB spec states 5V, 500mA.
A Y cable would help you because it would let you get at or close to the kernel limited 500mA.
Sent from my SCH-I510 using Tapatalk 2
Yes the split cable helps a lot on computers with standard USB ports with 500mA power supply. My other computers have 1.5A USB ports, and those are able to charge just fine with the standard straight USB cable.
should I use the USB or wall charger ?
silvercats said:
should I use the USB or wall charger ?
Click to expand...
Click to collapse
It takes me about 1-2 hours on a wall charger, 2 if it's fully flat. I always try to use the wall charger as it's much faster, but I will use USB attached to a computer if I have no other option.
wall charger is two times faster than the usb! one is at 1000 mA and the other is at 450mA by default. If you want to change that you should install custom kernel.
Usb3 should be detected and the full 900mAh used (which on some compuhers may cause the chipset to power down the port if other devices are plugged in
Sent from my GT-I9300 using xda premium
After i was struglin to charge my G3 through my pc i buy a traveler charger from ebay...its the same as the stock charger and said 1.8mA..i saw that my phone didnt charge as fast as my stock charger and still my wirless chargers couldnt charge my phone...but i saw another strange think...i bought a collored (w/ LED) usb cable to use it as a night light as long as with my stock charger on my bed....my phone charged as slow as i had connected into my pc usb 2.0!
So i test all my usb cables and saw an extremly diverse charging rate..
As you can see in my pics while using ampere all my other (ebay,old phones) usb cables couldn't pass the 350-400mA charging rate..while my stock LG cable could charge a bit more on the Traveler charger while with the stock charger it could get to 1.0A easily..
So whats wrong??Is usb cables equally different as the chargers???
Thanks and sorry about my horrible english!!!
pikachukaki said:
After i was struglin to charge my G3 through my pc i buy a traveler charger from ebay...its the same as the stock charger and said 1.8mA..i saw that my phone didnt charge as fast as my stock charger and still my wirless chargers couldnt charge my phone...but i saw another strange think...i bought a collored (w/ LED) usb cable to use it as a night light as long as with my stock charger on my bed....my phone charged as slow as i had connected into my pc usb 2.0!
So i test all my usb cables and saw an extremly diverse charging rate..
As you can see in my pics while using ampere all my other (ebay,old phones) usb cables couldn't pass the 350-400mA charging rate..while my stock LG cable could charge a bit more on the Traveler charger while with the stock charger it could get to 1.0A easily..
So whats wrong??Is usb cables equally different as the chargers???
Thanks and sorry about my horrible english!!!
Click to expand...
Click to collapse
So, as far as I know, with all of the phones I have had, including the G3, charging my phone through a computer always have horrible charge rates compared to charging through a wall outlet. Though, when you say a "travel charger" in not sure if this is what you meant or if you meant some other form of charger.
From your post I've come to view your question as being "can different USB cables charge at different rates?" the answer is yes. Different usb cables will grant different charging rates depending on what battery type that USB cable was meant to charge.
One last thing though, I would love to know what app you use to find all that information!
6NomoN6 said:
So, as far as I know, with all of the phones I have had, including the G3, charging my phone through a computer always have horrible charge rates compared to charging through a wall outlet. Though, when you say a "travel charger" in not sure if this is what you meant or if you meant some other form of charger.
From your post I've come to view your question as being "can different USB cables charge at different rates?" the answer is yes. Different usb cables will grant different charging rates depending on what battery type that USB cable was meant to charge.
One last thing though, I would love to know what app you use to find all that information!
Click to expand...
Click to collapse
So just to buy a funcy and funny usb cable with leds inside from ebay is just a waste of money...even with wall charger it can give to the phone max 600mA...
Anyway thanks...the app is Ampere!!!it give you the charge and discharge flow