Hi guys,
I have an odd question, but I need an answer, specially from one who knows about electronics behaviour. Ok, here is my case:
I'm in a hurry, have to recharge my device fast. Charging using the charger are more faster than using USB-to-PC cable. But while I'm charging, I also need to access my files. Unfortunately, the device only have 1 USB port. What to do? I bought a HTC Y-Cable that provides me with 2 USB port. Now the question is, if I connect my charger to USB Port #1 and my USB-to-PC cable to USB Port #2, does that mean I'm double charging? And if I am double charging, does that mean the charging duration will be shortened (faster charging)?
i'd say yes
normal usb only provide 500mA where the normal ac chager give much more
and recharge faster
so a miniUSB to 2 normal usb connected to a pc would mean both usb connect and fast charge
unless the pc would get confused that it had 2 pda's connected or something
but i doubt it i have a external usb hd which only works with usb only as in without other ac input if it have 1 of those
2 to 1 usb cables and that works
even if i dont use it personly because firewire give me enough power for only 1 connection
Related
I have just bought up my transformer ( Love it ) but it's at about 10% battery right now... I take the cable that came with it (the usb one) and plugged it into my computer but it is not charging ? Any idea what's wrong with it ? when i plug it into the charging unit it works fine though
i've heard it has to be turned off for the USB charging to work....
Like off as in screen off or off as in complete off ?
It will not charge in your computer. You have to charge it in the wall.
Sent from my Desire HD using XDA Premium App
One of the pamphlets that came with it said the screen has to be off in order to charge it using a computer's USB port, cause the screen uses too much power and a USB port doesn't output as much, its best just to charge with the ac adapter. Nothing is wrong with your unit, thats just how it works.
Dark lord me said:
I have just bought up my transformer ( Love it ) but it's at about 10% battery right now... I take the cable that came with it (the usb one) and plugged it into my computer but it is not charging ? Any idea what's wrong with it ? when i plug it into the charging unit it works fine though
Click to expand...
Click to collapse
Turn off the screen and it will charge. (you don't need to turn it off; you just need a black screen) It is very, very slow though.
My wall charger never charged my tablet so I am awaiting a replacement. The USB charge is MUCH slower than the wall charge. We are talking about maybe 4-5% an hour -- max with the USB cable alone.
Connecting this thing to a computer will NOT charge it. Even a normal 5V 1.2A-2A charger won't charge it fast enough. I used a 2A charger and it trickle-charged for over half a day and managed to clock in @ 50pc. I think the unit uses hardware info from the ASUS charger to detect the charger. Any other charger wont do.
Isn't the cable and charger USB 3 and charging is at non USB 2 values (voltage and current).
Good amount of mis-info in this thread...
The unit *will* charge from computer USB, assuming the USB port provides enough amperage (not voltage). I have not yet measured out the amps used, but it's on my list of things to do...
In order to charge from computer USB, the display on the Transformer needs to be off. The unit can be on, but it must be asleep.
The adapter that comes with the transformer provides 15VDC via extra pins which loosely resemble USB 3.0. These are *not* USB 3.0 data/power specs, however a USB 3.0 extension cord could be used to lengthen the existing adapter.
Any USB car adapter should work to charge this in sleep mode, similar to a computer USB port. In order to "fast charge" in a car, however, you'd basically need to use an AC inverter with an ASUS Transformer adapter.
ChristoA1 said:
Good amount of mis-info in this thread...
The unit *will* charge from computer USB, assuming the USB port provides enough amperage (not voltage). I have not yet measured out the amps used, but it's on my list of things to do...
In order to charge from computer USB, the display on the Transformer needs to be off. The unit can be on, but it must be asleep.
The adapter that comes with the transformer provides 15VDC via extra pins which loosely resemble USB 3.0. These are *not* USB 3.0 data/power specs, however a USB 3.0 extension cord could be used to lengthen the existing adapter.
Any USB car adapter should work to charge this in sleep mode, similar to a computer USB port. In order to "fast charge" in a car, however, you'd basically need to use an AC inverter with an ASUS Transformer adapter.
Click to expand...
Click to collapse
Tried a 2.1A 5V charger. Took about 8 hours to charge @ 50pc. The ASUS charger is rated at 1.2A.
is the only way to plug the device into your PC or laptop via USB on the dock?
you cant use the proprietary charger cable to do USB data transfer with the charging cable USB component?
ie....to do data transfers via USB (not the memory card), the only way is via the dock?
makaveli25 said:
is the only way to plug the device into your PC or laptop via USB on the dock?
you cant use the proprietary charger cable to do USB data transfer with the charging cable USB component?
ie....to do data transfers via USB (not the memory card), the only way is via the dock?
Click to expand...
Click to collapse
No, one end of the charging cable is regular USB and the other end (tablet-end) is proprietary. You can transfer files over by connecting to your computer's USB.
awesome, thanks.
do you think that if you get a male/female USB converter, you could plug in a USB memory stick device or a mini hard drive device and have it work fine in the charging cable just like you would if you were to plug in a mini hard drive into one of the usb ports on the dock?
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.
When I connect my P6200 using usb, it doesn't charge, instead, there is an 'x' symbol at the battery. Is this normal? Because using my Galaxy Ace, it charges when usb is connected. I'm asking this because I'm trying usb tether for the first time, but in this case if it doesn't charge, it means that I can only usb tether until my battery has depleted and I would have to recharge again to be able to tether.
Yup. Usb is not able to charge tab and ipad. Need to plug to wall for charging
Sent from my GT-P6200 using XDA Premium App
Actually it does charge. More of a trickle charge tho. If the screen is off, then it will trickle charge a bit faster.
If the tab is connected via USB, will it at least be able to sustain itself via the USB power?
So if your battery is on 50%, and you keep the tablet on and are using it. Will it at least stay on 50% and not decrease slowly?
Samsung puts a resistor in their chargers so the tablet can distinguish between a Samsung brand charger and all other chargers.
The tablet will not charge (or use power from) any USB port except the wall adapter. (lame Samsung... really lame...)
You can buy adapters (or make them)
There's more info for creating an adapter yourself in this thread http://forum.xda-developers.com/showthread.php?t=845844
Just like the GT-P1000, P6200 is charging over the usb port of any pc, only when it is turned off. But anyway the charging process is much longer. Very useful when you don't heave the travel adapter with you.
i use this usb cable it work
It pulls a Max of 500mA from the USB or unknown charger. This will charge a tab plus with the screen off that isn't doing much. It will pull 1500mA from the Samsung wall charger.
Sent from my GT-N7000 using Tapatalk
My Plus charges normally from PC via USB. Icon shows 'x', but still in charging process anyway. It takes longer time but for those who tether should be ok and Plus should stay at least on the same level of %. I have unoriginal cable bought together with car charger.
I purchased a micro USB charger adapter from ebay. It just plugs into the 30 pin port and I am able to use my cell phone charger with no problem at all. The cell charger puts out 1000ma and the tab plus recognizes it. Do a search for P6200 Micro USB Charger Adapter on ebay.
If you are determined to use a computer to charge the tab plus, you will need the adapter above and a dual USB A to micro USB B Y cable. It will plug into two USB ports on the computer and give you the 1000ma to charge the tab plus. This is the best solution without having power cables all over your desk.
re
HEllo, where can I buy this cable?
thanks
cedricl said:
I purchased a micro USB charger adapter from ebay. It just plugs into the 30 pin port and I am able to use my cell phone charger with no problem at all. The cell charger puts out 1000ma and the tab plus recognizes it. Do a search for P6200 Micro USB Charger Adapter on ebay.
If you are determined to use a computer to charge the tab plus, you will need the adapter above and a dual USB A to micro USB B Y cable. It will plug into two USB ports on the computer and give you the 1000ma to charge the tab plus. This is the best solution without having power cables all over your desk.
Click to expand...
Click to collapse
Turn off your tablet... Only then its charging
Sent from my GT-P6210 using XDA
i just got this adapter from dealextreme for the p1000. it works perfectly fine for the p6200. i got my 2.1A charger to work and can charge of via USB port.
Thanks
Enviado desde mi GT-P6200 usando Tapatalk
or you can make it charge by requesting this feature in a custom kernel
Thanks
Yesterday I bought P6200 without charger, was using usb cable and it ws slow.
First I thought there might be some problems but this post helped me figure the cause
Hi all.
Could the charger of desire work normally(when check in about phone it must be show AC not USB) for the HTC desire HD and Inspire 4g.
Thanks
If it shows AC that means you are charging through a power outlet and when it's charging by USB you are charging it through a USB cable connected to a computer
Charging through AC is faster then USB
Sent from my Desire HD using xda app-developers app
Why does USB from PC charges slower than the one from the socket?
emptyto said:
Why does USB from PC charges slower than the one from the socket?
Click to expand...
Click to collapse
PC has only 500mA current output, your wall charger has 1A output
greater current faster charging-but this does not mean that battery has not its max. charging current!
higher charging current can easily damage your battery and cell phone.
I charge my phone with Xperia charger, with Kindle charger, with Nokia charger and many more. So far I have no problem with my battery. As long as on the end of the cable you have “micro-b usb” and stable (troublefree) electric transformator to supply that cable you can charge your battery. The time to charge may be different but the result is the same.
bravebg said:
I charge my phone with Xperia charger, with Kindle charger, with Nokia charger and many more. So far I have no problem with my battery. As long as on the end of the cable you have “micro-b usb” and stable (troublefree) electric transformator to supply that cable you can charge your battery. The time to charge may be different but the result is the same.
Click to expand...
Click to collapse
+1 you only have to use a micro usb!
The charger should work with any phone other than iPhones
Quiglesigles said:
The charger should work with any phone other than iPhones
Click to expand...
Click to collapse
Correct!
As long as it is a usb micro charger, it all works....
only the time required to fully charged varies...
I am using a Nokia USB cable as a Charge. Works fine too.
Sent from my Desire HD using xda app-developers app
I'm using Nokia cable, Sony cable ... All work fine !
As long as the two data cables are connected to eachother, the DHD will recognise it as a wall charger, and it will use 1 ampère. Instead of the 0.5 amps when connected to a PC (when the data cables aren't connected to eachother).
You can buy "charging only" cables. They always charge at maximum rate and do not transmit any data. Usually come with external battery packs etc.
Just to clarify some. (Talking about USB2.0 as 3.0 has a little higher power)
The USB on computers are powered by the motherboard (if not using extra PCI USB card).
Usually the motherboard gives about 500mAh to each USB host. If that host has 4 USB connectors all those connectors share the 500mAh.
And just be careful to not go above 500mAh as some (older) motherboards or even add in card's cannot handle the extra power and will fail to work(permanently).
So a charge-only cable will not make a difference in this situation, same goes for using multiple USB ports as that also brings extra problems with it, as power/voltage doesn't flow in just 1 direction (when using 2 poles). You could blow out USB voltage regulators when connecting different USB power leads together.
As for the phone side you can also use a 5000mAh power source, as the phone will 'take' what it needs. For DHD the max charging power is about 800mAh~900mAh if I'm not mistaken.
As long as its 5V and somewhat stable.
So if you want to charge the DHD (or any other USB chargeable phone, mostly all of them) as fast as possible use the original wall charger.
If you have to do it on the PC/Notebook unplug as much USB devices as possible, so most of the power can go to the phone.
Also make sure the screen of the phone is turned off as that's the biggest battery drain of the DHD. Thus also making charging slower (when on).
I'm using htc charger to charge my e-cigarette . It's works good.
If you plug it into USB socket, and enable "Fast charge" option, does it do anything? Does it block the data transfer and acts like a wall socket (1A) ?
Hey guys
I have a microusb y cable connected to the tablet. A USB to ethernet dongle is attached to one end and a microusb cable USB connected on another
The microusb cable is connected to an AC charger but the tabet doesn't like it and is going down to standard usb charging speeds/power
Would there be anyway to make it charge AC because when I play games on it the power draw is faster than usb charging speeds
Thanks
xxsashixx said:
I have a microusb y cable connected to the tablet. A USB to ethernet dongle is attached to one end and a microusb cable USB connected on another
The microusb cable is connected to an AC charger but the tabet doesn't like it and is going down to standard usb charging speeds/power
Would there be anyway to make it charge AC because when I play games on it the power draw is faster than usb charging speeds
Click to expand...
Click to collapse
Probably not. You could try using the old USB charge cable hack (cut open the cable insulation and short the data lines) ... but I doubt it'll work because the tablet will still sense data from the dongle and limit input to .5A. Another possibility is to try and create a kernel with USB3 Fast Charge enabled (I don't think anybody else has one out with this feature yet).
Sorry to be the bearer of bad news. Hopefully somebody else has a better idea.
Yup, search ebay for this:
"3 Port USB 2.0 OTG Hub OTG Charging Cable For Android Tablet Computer Cheap"
You get a 3 port hub with power pass through and a 3 position switch for compatibility with most OTG devices. It's like 9 bucks. Super cool gadget!
have you tested it?
Can you use all three ports at the same time? ( i.e can it work like a mini usb hub)
there is a port selector switch on the unit that is a tad confusing ( and the ebay description didn't help much)
Nope but it works with samsung, onda and others tablets by use of that 3 way switch. I would get this at 9 bucks and try. Gimme a week and I may have one.
ailima said:
Probably not. You could try using the old USB charge cable hack (cut open the cable insulation and short the data lines) ... but I doubt it'll work because the tablet will still sense data from the dongle and limit input to .5A. Another possibility is to try and create a kernel with USB3 Fast Charge enabled (I don't think anybody else has one out with this feature yet).
Sorry to be the bearer of bad news. Hopefully somebody else has a better idea.
Click to expand...
Click to collapse
What is the USB3 fast charge?
SuperPichu said:
What is the USB3 fast charge?
Click to expand...
Click to collapse
The usb3 spec allows for current throughout >500ma. Usb2 was limited in that manner. The usb3 fast charge was an addition to the kernel which allows for the acceptance of a faster charge rate over USB. Without it, the devices would self limit the current to ~500ma.
I don't have a reference for it, but Google and xda are probably your friends.