Hi,
I connect my TFT to an USB 3.0 port and the battery icon is not charging. Is it normal or ....?
Tks.
IIRC it will trickle charge when the screen is off. USB will not charge it like a wall charger would
Sent from my Transformer TF101 using Tapatalk
Yea its normal, bad design by ASUS
It will charge via USB 2.0 and USB 3.0 but you have to put the TF in sleep mode or turn it off and the charge is very slow
magicdave26 said:
Yea its normal, bad design by ASUS
It will charge via USB 2.0 and USB 3.0 but you have to put the TF in sleep mode or turn it off and the charge is very slow
Click to expand...
Click to collapse
Oic. Tks.
baseballfanz said:
IIRC it will trickle charge when the screen is off. USB will not charge it like a wall charger would
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse
I charge thru my computer's USB 3.0 port.
Related
I wanted to know if it is possible to charge the ASUS transformer using a computer?
Is there any hack for it?
umasood said:
I wanted to know if it is possible to charge the ASUS transformer using a computer?
Is there any hack for it?
Click to expand...
Click to collapse
IIRC it will charge if the transformer is turned off but very slowly
Sent from my Transformer TF101 using Tapatalk
When I was driving the other day with it connected to the USB charger in the car (same as PC USB) and it got 4% in about an hour.
isnt this the biggest DOWN SIDE of TF.
Like this is such a basic feature these days that you should be able to charge your android device using PC usb/ charger etc.
I thought there would be some hacks for this. or is this a hardware specific lacking?
The USB plug on the Sync/Charge cable of the Transformer is a USB 3.0 plug. It uses the extra pins of the USB 3.0 for the electricity to charge.
umasood said:
isnt this the biggest DOWN SIDE of TF.
Like this is such a basic feature these days that you should be able to charge your android device using PC usb/ charger etc.
I thought there would be some hacks for this. or is this a hardware specific lacking?
Click to expand...
Click to collapse
I don't think this issue is specific to the Transformer. I seem to recall that the iPad comes with a high-current charger, and charges slowly if done via a computer. I think the issue is that the battery is much larger than any smartphone battery, and the USB port spec was created to power things like mice and USB memory sticks, and provides a low current. This way it also won't overload the host computer's power supply and cause stability issues on the computer.
nxt said:
The USB plug on the Sync/Charge cable of the Transformer is a USB 3.0 plug. It uses the extra pins of the USB 3.0 for the electricity to charge.
Click to expand...
Click to collapse
the extra wires in USB 3.0 cables are for higher speed transfers the voltage is still 5.0V the TF uses one of the wires to signal the power supply to provide 15V vs 5 V. The connector is not a true USB 3.0 If you want to charge mobile ,just connect the 12VDC from your vehicle to pins 1 and 4.
After reading this i put my transformer in the USB 3 socket and hey presto... trickle charge enabled! It doesnt say that its dojing it but mine went up from 95 - 96% in the 10 mins i had it pluged in (whilst on it)
mazimo said:
After reading this i put my transformer in the USB 3 socket and hey presto... trickle charge enabled! It doesnt say that its dojing it but mine went up from 95 - 96% in the 10 mins i had it pluged in (whilst on it)
Click to expand...
Click to collapse
Awesome, it would only take like 16h to charge it from empty to full then! ... compared to ~1.5-2h depending on use with the 15v charger.
But if you want to charge it from the PC, just hook it up to the 12v rail on the PSU (build a molex to usb adapter or similar)
Edit: what would be interesting though, is if you could charge and sync at the same time by connecting the data cables to a usb port, but keep the power cables hooked to the 12v rail. Or maybe the TF shuts down all sync stuff when its charging...
Just a quick update... After 6 hours if gone up to a whapping...... 76%
I guess it was just playing trick on me!!!! sorry to get peoples hopes up.
Go look at USB3.0 specs. You do not have the current and Voltage necessary to do anything more than a slow trickle charge. 3.0 os basically 2.0 with an extra pair of wires for faster data transfer not higher voltage. The connector on the TF charger is not wired to USB3.0 standards.
The AC adapter reconfigures itself when it recognizes the asus tablet and it gives 12v instead of 5volts. Just tried now and it's working.
I upgraded today and now my TF won't charge with the USB cable.
I didn't bring my power connector to work, so all I have is my usb cable. When I get home I'll plug it in and see, but I'm surprised that it is not charging via USB.
Did anyone else have this issue?
ummmm it dont charge through PC usb... need to use the AC adapter to charge...
It does not charge via USB 2.0, but i do believe it may charge via USB 3.0...
I have had no need for an extra charger and have not read any charging cables threads in this forum thouroughly enough.
Sent from my Transformer TF101 using XDA Premium App
I thought it trickled charged on USB? I guess not. It charges fine o charger. My mistake.
It'll charge via USB but it's very slow and the tablet must be turned off first.
What will my transformer only charge with the main adaptor? Extenssions dont work (usb) and i have usb debugging on. I cant even use my portable charge, or my cable box ich all work with my cell.
Sent from my SCH-I510 using XDA App
do you have the dock? pretty sure it works fine with mine. wht rom/kernel are you using?
It will charge from the main adapter from a wall plug in. It will charge from the dock. It will SLOWLY trickle charge from usb if the screen is off.
No im on stock have b70 so no root. And no dock
Sent from my SCH-I510 using XDA App
Also im just using a usb extension to make cable longer but still using main adaptor with wall outlet
Sent from my SCH-I510 using XDA App
thebadfrog said:
It will charge from the main adapter from a wall plug in. It will charge from the dock. It will SLOWLY trickle charge from usb if the screen is off.
Click to expand...
Click to collapse
Had it plugged into cable box usb overnight screen off no luck. Its like it only work with its own stuff
Sent from my SCH-I510 using XDA App
Yes...It really only works with its own stuff. Some have claimed to have it charge from usb when it was off but I have never tested it.
Are any other similar devices able to charge through usb? Netbooks or laptops? Usb was not designed to be a big power source. Some hard drives require two usb connectors for just a hard drive.
Sent from my mopho
From what i have read in other threads it has to do with the voltage required and how Asus wired their plug.
Use USB 3.0 cables and it will work fine. Also use a USB 3.0 port on the pc for slow charging.
Usb 3 cable works fine here...
Sent from my MB860 using xda premium
Hi.
I've just rooted my epad (having B70 serial) but I've noticed that when I plug in the USB cable to the computer, it won't recharge. Is that normal??
gil80 said:
Hi.
I've just rooted my epad (having B70 serial) but I've noticed that when I plug in the USB cable to the computer, it won't recharge. Is that normal??
Click to expand...
Click to collapse
Yes normal. Does not charge with USB to PC.
ya its not so posed to fully charge but correct me if i am wrong i think that it trickle charges if it is plugged into a highspeed or a 3.0 port with the screen off
mrevankyle said:
ya its not so posed to fully charge but correct me if i am wrong i think that it trickle charges if it is plugged into a highspeed or a 3.0 port with the screen off
Click to expand...
Click to collapse
I believed so but I think you need a 3.0 USB cable also IIRC
You will get a trickle off USB2; not sure if anyone has tried USB3, I would think it can give enough juice to charge though. For meaningful stuff in the stikk USB2 filled world, use the charger
Sent from my Transformer TF101 using Tapatalk
Hmm so nothing definitive then on this?
Could you use the keypad ports to charge?
If so would it matter which port you plug it in to on the Transformer?
Can the usb be used to transfer files to and from the laptop computer
Sent from my Sensation using XDA Premium App
[email protected] said:
Can the usb be used to transfer files to and from the laptop computer
Sent from my Sensation using XDA Premium App
Click to expand...
Click to collapse
Yes
...............................
Reading the manual, it says after charging the first time, that the tablet can be charged by USB if there is enough power through the USB port. I put an extension between the Asus adapter and the proprietary cord, and it won't charge unless directly connected to the adapter. I have USB 3 port on my computer that gives out higher than standard power, and I have a USB port in my car, and this tablet won't charge on anything except a direct single asus wire connection to the Asus adapter. Is this correct? It seems that I may have a defective tablet.
Are there any other people having this issue.
USB 3.0
pixel-painter said:
Reading the manual, it says after charging the first time, that the tablet can be charged by USB if there is enough power through the USB port. I put an extension between the Asus adapter and the proprietary cord, and it won't charge unless directly connected to the adapter. I have USB 3 port on my computer that gives out higher than standard power, and I have a USB port in my car, and this tablet won't charge on anything except a direct single asus wire connection to the Asus adapter. Is this correct? It seems that I may have a defective tablet.
Are there any other people having this issue.
Click to expand...
Click to collapse
The USB extension also needs to be USB 3.0. Is the one you're using?
The extension was to the power outlet in the wall.
I wonder if the Asus chord is made for USB 3 then?
Sent from my brain to my hand to XDA
Is your extension just a USB extension or a powered USB extension? Maybe it carries data but not power? Can you charge other devices with the extension (and do they actually charge at a decent rate)?
Yes! I charge my htc sensation on it all the time. But I more than that, I am trying to find out if others are able to charge via the Asus proprietary USB cord to another source such as a computer or car etc.....
as opposed to using the wall power adapter from Asus
Sent from my brain to my hand to XDA
I also can't get the tf700 to charge with any adapter other than the supplied charger. I've tried 500mA, 1A and 1.9A (from a Nook color) USB chargers and none work.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
pearl62 said:
I also can't get the tf700 to charge with any adapter other than the supplied charger. I've tried 500mA, 1A and 1.9A (from a Nook color) USB chargers and none work.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Click to expand...
Click to collapse
I am quite certain that it says in the user manual that it is possible to charge via USB, i don't have it with me at work, but can someone verify this.... it could be a major issue for some, and needs to be addressed. I know that the battery power at full charge is not going to last all day for me, and being able to charge via USB is really important since i am in sales so i do not have access to an electrical outlet, but i do have a USB port in my car.
Sent from my ASUS Transformer Pad TF700T using xda premium
I'll add my personal experience to this...
When I got the tablet I put in a basic USB extension cable between the tablet cable and the outlet adapter. I didn't notice for an hour or so that it wasn't saying it was "charging".
Except...in that hour the battery hadn't gone at all.
And with the screen off and left to its own devices it will charge to 100%.
So I guess the point is this, it may not say its charging but it is getting power. If you're using it as like an overnight charging thing, it should work just fine.
Doesn't the manual say that you need to power it off before changing over USB?
Splaktar said:
Doesn't the manual say that you need to power it off before changing over USB?
Click to expand...
Click to collapse
Thanks for pointing this out.
I'll have to check this out, but I hope one doesn't need to have to restart a tablet, just to change the power source. Kind of a pain
troa11 said:
I'll add my personal experience to this...
When I got the tablet I put in a basic USB extension cable between the tablet cable and the outlet adapter. I didn't notice for an hour or so that it wasn't saying it was "charging".
Except...in that hour the battery hadn't gone at all.
And with the screen off and left to its own devices it will charge to 100%.
So I guess the point is this, it may not say its charging but it is getting power. If you're using it as like an overnight charging thing, it should work just fine.
Click to expand...
Click to collapse
So maybe it is charging a little, even though it says it isn't. I think I will try this out and leave it for a few hours or overnight as a test.
pixel-painter said:
So maybe it is charging a little, even though it says it isn't. I think I will try this out and leave it for a few hours or overnight as a test.
Click to expand...
Click to collapse
So I plugged into the USB port and the power level was at 78%, I left it plugged in for about 5 hours and when i rechecked, it read 97%. The whole time it read as Not charging. This is good news, I really need that feature. It is interesting that it reads as Not charging, this must be a software error.
Sent from my ASUS Transformer Pad TF700T using xda premium
See this thread:
http://forum.xda-developers.com/showthread.php?t=1788055