Does anyone know the amp output for the docks usb ports? Looking to charge my phone off it but want to know before I try something stupid.
Sent from my PG86100 using Tapatalk
Typical USB 2.0 ports on a PC or laptop output at between 100mA to 500mA. Your phone will charge, but not as fast as a standard AC wall charger.
Awesome. Thats all i needed to know. Was going to try a USB modded to make the phone think is was on AC rather than USB but really did not want to burn out the port or something. If the max it can output is 500 then I will just have to live with it. Thanks for the quick response.
Sent from my Transformer TF101 using Tapatalk
Related
can i check with all bros using eee transformer is it possible to charge transformer through PC as i plug it in for more than 8 hours and it is still 60% but it went up when i put it to the asus usb adaptor to charge and if i were to use other commercial usb adaptor, it doesn;t charge again.
kindly advise. appriciate all input.
tf needs 15 volts, standard usb only provides 5 volts, hence no charge
bro trosenda, so i cannot charge through my pc?
what about commercial usb charger?
i thought they supply 15v also?
finally, is there a way to charge through PC?
I have my wifi policy set to sleep and my pc will charge my transformer, however it is very slow.
For a quick charge you need mains
bro straxusii, for main i have to use the usb adaptor that they supply? or any usb adaptor will do?
If you take a closer look inside the USB cable or adapter you'll see a set of extra pins behind the standard 4 USB pins. I presume these are used for charging the TF @15V. USB chargers output 5V.
The transformer does technically charge on any usb but only when the screen is off and even then at an extremely slow rate. With the screen on it wont even bother because the drain far exceeds the charge. 5v @ 1A max for your standard usb, 500mA on most laptop or pc usb ports, vs the transformer's native 15v @ 1.2A.
For main you will have to use the provided charger, its the most annoying part of the transformer right now.
Sent from my Transformer TF101 using Tapatalk
kylehase said:
If you take a closer look inside the USB cable or adapter you'll see a set of extra pins behind the standard 4 USB pins. I presume these are used for charging the TF @15V. USB chargers output 5V.
Click to expand...
Click to collapse
woah never notice that. thought all usb cable are the same.
lacrossev said:
The transformer does technically charge on any usb but only when the screen is off and even then at an extremely slow rate. With the screen on it wont even bother because the drain far exceeds the charge. 5v @ 1A max for your standard usb, 500mA on most laptop or pc usb ports, vs the transformer's native 15v @ 1.2A.
For main you will have to use the provided charger, its the most annoying part of the transformer right now.
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse
this part i gotta agree with you bro. maybe in future they will come out with a usb charger which is capable of switching between 5v to 15v as and when we need. or just a usb charger for all sorts of things. maybe a 25v charger haha... might make things like iphone charge faster.
Hi,
I hope someone can help me. My Transformer doesn't charge anymore since yesterday.
Tablet was around 10% when i put the charger in, but the message 'Connect your charger'doesn't go away.
Strange thing is that whenever i plug it in and TF is off, it will turn on, so I guess the wall charger and cable are functioning.
Also when connecting it to my PC I can sync.
I've tried already all the solutions i could find online:
- put the wall charger in the freezer --> didn't work
- cold boot --> didn't work
- factory reset --> didn't work
- tried a different wall charger and connected the wire to a portable battery --> didn't work
- flashed the ROM again --> didn't work
The only way now i have for charging my TF is by USB (connected to PC while turned off). It will charge this way but it takes about 3 hours to get 10% charge from this.
Anyone had this happen already before?
So you tried multiple Asus wall chargers? with no luck? A standard USB charger will not work as those have an output voltage of 5+ when the tf requires 12+.
Sounds like you have a bad charger, you can join the club of thousands... It is a very common issue and not always resolved by the freezer or fiddling trick. If you are able to trickle charge via a PC connection then your cable and tf should be good.
Sent from my SAMSUNG-SGH-I997 using XDA
Link for another discussion where I listed an alternate charger
http://forum.xda-developers.com/showthread.php?p=23917818
It really is heads and tails better than the Asus one
Sent from my SAMSUNG-SGH-I997 using XDA
theraffman said:
So you tried multiple Asus wall chargers? with no luck? A standard USB charger will not work as those have an output voltage of 5+ when the tf requires 12+.
Sounds like you have a bad charger, you can join the club of thousands... It is a very common issue and not always resolved by the freezer or fiddling trick. If you are able to trickle charge via a PC connection then your cable and tf should be good.
Sent from my SAMSUNG-SGH-I997 using XDA
Click to expand...
Click to collapse
No, I tried with a different wall charger (from Motorola). I don't think it's the wall charger though, but to make sure I wil connect it to a phone and check if it's working.
It just feels like the cable and wall charger is working as it should (tablet powers up or screen turns on when I plug it in), but the tablet refuses to charge.
Could it be the pins?
Sent from my GT-I9100 using xda premium
And the motorola USB charger puts out at least 12 volts and not just 5. Is it the wall charger for the zoom? I was UN aware that the zoom used a USB type charger (similar to the tf).
Once again, you can't use just any USB wall charger for the tf... 99% of chargers put out the standard 5 volts which is enough to trickle charge a tf and to slightly charge it in done cases when powered down. I am only adamant about this this because I have sewn this post a hundred times, and 99 of those times it was the charger... Many people don't realize the tf USB charger is very coherent then what most folks are accustom to, even though it looks and acts similar to others.
The only way to confirm is to find someone who has a tf and borrow their charger, our go to radio shack and buy the charger I listed... Which you should do any ways because it's is way way better, my charging cord over all length is 10ft. Beats the hell out of the 2 or 3 you normally would have.
Sent from my SAMSUNG-SGH-I997 using XDA
theraffman said:
And the motorola USB charger puts out at least 12 volts and not just 5. Is it the wall charger for the zoom? I was UN aware that the zoom used a USB type charger (similar to the tf).
Once again, you can't use just any USB wall charger for the tf... 99% of chargers put out the standard 5 volts which is enough to trickle charge a tf and to slightly charge it in done cases when powered down. I am only adamant about this this because I have sewn this post a hundred times, and 99 of those times it was the charger... Many people don't realize the tf USB charger is very coherent then what most folks are accustom to, even though it looks and acts similar to others.
The only way to confirm is to find someone who has a tf and borrow their charger, our go to radio shack and buy the charger I listed... Which you should do any ways because it's is way way better, my charging cord over all length is 10ft. Beats the hell out of the 2 or 3 you normally would have.
Sent from my SAMSUNG-SGH-I997 using XDA
Click to expand...
Click to collapse
Thanks for your replies.
You're right, the Motorola wall charger is only 5v output. It was the one I got with the Milestone. I do start to believe it might be the wall charger after all now.
Unfortunately I don't know anyone else with a TF (anyone reading this lives in Ghent, Belgium with aTF?). Radio Shack isn't an option either since I live in Belgium, but I'll try to find overhere or online.
Anyway, appreciate your help. Might try the freezer thing again in the meantime... you never know.
When you connect your TF to a pc on a usb 3.0 port, should you be able to see the TF charging? Or no way to get more the 5v from this too?
Sent from my Transformer TF101 using xda premium
do u know anyone with an ipad? sure the wall chargers are 15w out and should do the trick.
Alta1r said:
When you connect your TF to a pc on a usb 3.0 port, should you be able to see the TF charging? Or no way to get more the 5v from this too?
Click to expand...
Click to collapse
USB is 5V. No exceptions.
What you can do is build your own PC charger, like the one in my sig.
scottyf79 said:
do u know anyone with an ipad? sure the wall chargers are 15w out and should do the trick.
Click to expand...
Click to collapse
Cheers man, my colleague has an ipad. Will ask him to bring his wall charger.
Goatshocker said:
USB is 5V. No exceptions.
What you can do is build your own PC charger, like the one in my sig.
Click to expand...
Click to collapse
I might try that, but only if I have no other choice (i fear i'll blow up my TF while doing that).
usb chargers are 5v only and will charge but take all day. The TF charger uses the physical usb plug to do double duty. transfer data via usb and charge device using 15v when the charger block sees a gnd signal on pin 7. Charging is not usb. There are several after market chargers that have variable output voltages and an asst of connectors (usb being one) best one is dynex video charger. Also you should not attempt to flash a ROM with 10% charge as you could get stuck in the middle of a charge and have problems.
Well, it was the wall charger after all. Went out to buy a power adapter with 12v and 1000mA output and the tablet is charging again. Many thanks to all people that replied and tried to help me.
For your info: ipad or galaxy wall charger aren't working with our TF's, they both only have an out put of 5v.
Sent from my Transformer TF101 using xda premium
Alta1r said:
Well, it was the wall charger after all. Went out to buy a power adapter with 12v and 1000mA output and the tablet is charging again. Many thanks to all people that replied and tried to help me.
For your info: ipad or galaxy wall charger aren't working with our TF's, they both only have an out put of 5v.
Sent from my Transformer TF101 using xda premium
Click to expand...
Click to collapse
Never allow your charge level fall below 30% because it will cause your charger to overheat and eventually stop working.
Any idea why I can't seem to charge my Nexus 7 with my car charger?
i have both a generic Micro USB charger and I have one of the dual USB ports that you put into the cigarette lighter. It wont even acknowledge that I have plugged anything into it.
i have used the USB port to charge MANY different cell phones my old Dell Streak 7 and even a friends iPad.
Any ideas?
joeclark said:
Any idea why I can't seem to charge my Nexus 7 with my car charger?
i have both a generic Micro USB charger and I have one of the dual USB ports that you put into the cigarette lighter. It wont even acknowledge that I have plugged anything into it.
i have used the USB port to charge MANY different cell phones my old Dell Streak 7 and even a friends iPad.
Any ideas?
Click to expand...
Click to collapse
I think the N7 needs 2A to charge. a single USB is 500 mA and the dual 1A, so I don't think there's enough power.
Also check if the output of your microUSB cigarette charger is 2A
zaphyr said:
I think the N7 needs 2A to charge. a single USB is 500 mA and the dual 1A, so I don't think there's enough power.
Also check if the output of your microUSB cigarette charger is 2A
Click to expand...
Click to collapse
well i think that answers my question. thank you
This one will work: http://www.amazon.com/gp/product/B0090SVY3K/ref=oh_details_o02_s00_i00
It charges at the same rate as the stock AC charger.
The N7 is one picky device for charging. I have several chargers for the car that charge the iPad but not one will charge the N7. Same as AC chargers. This set works for me
http://www.amazon.com/dp/B008FF84K0/ref=pe_175190_21431760_M2T1_ST1_3p_dp_1
This is what I use and it works just fine. I use it to charge my N7, GNote, Nook Color or my grandsons IPhone and it works equally well on all of them.
BTW, it prime available if you are a member.
dparrothead1 said:
This is what I use and it works just fine. I use it to charge my N7, GNote, Nook Color or my grandsons IPhone and it works equally well on all of them. Very unobtrusive and I like the fact that the fuse is easily accessable.
http://www.amazon.com/Ultra-Compact...sr=8-2&keywords=ultra+compact+usb+car+charger
BTW, it prime available if you are a member.
Click to expand...
Click to collapse
That is exactly what I need to get.
Thank you.
Sent from my Nexus 7 using Tapatalk HD
It only charges via usb when the screen is off or when the device is off. Try plugging it in checking the battery % leave it awhile and then recheck the battery % you may find its gone up!
Sent from my GT-I9000 using xda app-developers app
SO I am thinking of building my own charger for the Nexus 10 (for personal use only, not to sell). I am thinking of using a 5v PSU that puts out 6 amps (30 watts). I would be wiring the USB cable into the outputs of the PSU for connection to the tablet. Does anyone know if this would be safe to do for charging? I know the USB charger has a max amperage of 2A, and that is what the official spec says. But there are rumors of a pogo pin charger that will charge much faster, so higher *should* be safe enough to do for charging through USB right?
The tablet will only pull what it needs
Sent from my HTC PH39100 using xda app-developers app
See the lengthy discussion on this in the pogo charger thread, or just take the comment above.
With current, you only need to make sure your supply can "suoply" enough current, it can never be too much.
Sent from my GT-I9300 using Tapatalk 2
Can you use a regular micro usb charger in place of a 3.0 cable?
Thank you for the help
Yes, no problem. In fact with my S5 there is only a usb 2 cable supplied.
admiral70 said:
Can you use a regular micro usb charger in place of a 3.0 cable?
Thank you for the help
Click to expand...
Click to collapse
Yup, you sure can.
Just an FYI: The USB3 cable is in fact micro USB as well. It's just the USB3 version of microUSB. The USB3 port on the phone is backward compatible, so a USB2 cable will work just fine in there. :good:
Yep it will work
Sent from my SM-G900P using Tapatalk
So which will charge quicker the stock charger or my nexus 7 charger?
I think they are both 2 amp chargers. What is the advantage of the extra plug on the charger?
bhess said:
So which will charge quicker the stock charger or my nexus 7 charger?
I think they are both 2 amp chargers. What is the advantage of the extra plug on the charger?
Click to expand...
Click to collapse
It's USB 3.0. You'll get faster data transfer speeds when plugged into a USB 3.0 port on a computer.
bhess said:
So which will charge quicker the stock charger or my nexus 7 charger?
I think they are both 2 amp chargers. What is the advantage of the extra plug on the charger?
Click to expand...
Click to collapse
faster data transfer rate.
OK thanks.
So the charging rate is the same depending on the "block" amps?
I think the USB 3.0 charges faster even if it's still the same 2A charger
Sent from my SM-G900P using Tapatalk
bhess said:
OK thanks.
So the charging rate is the same depending on the "block" amps?
Click to expand...
Click to collapse
It would seem so, yes. In re: max charging amps, it seems that the S5, much like the Note 3, will charge only at 1200mA while the screen is on and 1800mA otherwise. See discussion here: http://forums.androidcentral.com/sa...48184-galaxy-note-3-max-charging-current.html
To the OP, thanks for starting the thread... I hadn't even realized that the new Micro USB 3.0 connector actually was backwards compatible with the older MicroUSB 2.0 for charging!
Great link thanks!
Yep Confirmed!