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[Q] TF Charging Indicator?

Sorry if this has already been asked and answered - the XDA Search has been down for the past couple of hours and I just want to be sure I'm not missing anything here..
From what I can see in the reviews, the TF does *not* have any sort of charging indicator / LED on it - correct? I read that there will be one on the keyboard dock - but there is not one on the tablet.
So what are you guys doing? Just plugging it in and letting it sit overnight to give it its full charge - and then going by the battery indicator when you turn it on?
I've got my new TF sitting next to me here, and I'm trying to be a good dad to it by charging it up first before using it - but not having any sort of an indicator on it - I have no idea if it's doing anything or not!!!
Screw it - I think I"m gonna unplug it and start futzing it with it! Battery be damned!!
btw - damn this charge cable is SHORT!!

No charging LED that I can see on mine, and yea, I hate this stupid charging cable, guess you can always get a USB extension cable.
pogul said:
Sorry if this has already been asked and answered - the XDA Search has been down for the past couple of hours and I just want to be sure I'm not missing anything here..
From what I can see in the reviews, the TF does *not* have any sort of charging indicator / LED on it - correct? I read that there will be one on the keyboard dock - but there is not one on the tablet.
So what are you guys doing? Just plugging it in and letting it sit overnight to give it its full charge - and then going by the battery indicator when you turn it on?
I've got my new TF sitting next to me here, and I'm trying to be a good dad to it by charging it up first before using it - but not having any sort of an indicator on it - I have no idea if it's doing anything or not!!!
Screw it - I think I"m gonna unplug it and start futzing it with it! Battery be damned!!
btw - damn this charge cable is SHORT!!
Click to expand...
Click to collapse

Monoprice has the USB 3.0 extension cables, but they won't be in stock until tomorrow (their estimate). When they are back in stock, a 6ft extension will run you about $7-$8 shipped.

I plan to order a few cables from Monoprice with a mini hdmi to hdmi cable.

Does it need to be usb 3.0 or will usb 2.0 do the trick ?
dfin13 said:
Monoprice has the USB 3.0 extension cables, but they won't be in stock until tomorrow (their estimate). When they are back in stock, a 6ft extension will run you about $7-$8 shipped.
Click to expand...
Click to collapse

USB 2 cables don't supply enough power.
It will charge, but I think it has to be off and it'd be really slow going.

But usb 2.0 extension cable will work fine with the supplied charger? Also would you not require a usb 2.0 to usb 3.0 converter ?

Asus really overlook the inclusion of an charging indicator. Or, they are trying to make more $$$ on the keyboard/dock?

jake21 said:
But usb 2.0 extension cable will work fine with the supplied charger? Also would you not require a usb 2.0 to usb 3.0 converter ?
Click to expand...
Click to collapse
Has anyone got some definitve experience on USB2 vs USB3 for charging and/or with an extension cable. The whole charging process and adaptor are making me a little nervous in general.

there is no reason to invest in USB 3 gear when all you really need is higher amperage, wich you often get from stand-alone chargers like the one supplied or you can buy in stores (just check that the output is 1000mah or more, 2000 mah is desired for effective charging).
The reason you might want to use a usb 3 PORT (cable makes no diffrence) is that usb 3 deliver more juice then usb 2, but unless it is a dedicated charger port that can supply 2000mah+ charge the port still require you to have the pad either off or stand by and even then charging will take ages.
Consider this, the supplied charger delivers 2000mah on 5v and my HTC charger to my phone has 1000mah @ 5v. Compared to the standard 550mah on a singel non-charger adapted USB port on a computer.

The TF charger output at 15V @ 1.2A with using the supplied USB3.0 cable. If you use a USB2.0 extension cable, it will drop the charging voltage down to 5V. You will need a USB3.0 extension cable

eli.kennedy said:
Has anyone got some definitve experience on USB2 vs USB3 for charging and/or with an extension cable. The whole charging process and adaptor are making me a little nervous in general.
Click to expand...
Click to collapse
There's a thread about this issue here. Several USB 3.0 cables have been found to work, but not for everyone. I have this one that I received today. It charged both the tab and the dock with the wall charger. I've also got a Tripp Lite that's worked for others on the way in the case the other didn't work.

it has to be USB 3.0 extension since the tablet recognizes the extra pin which is what lets it charge at the full rate.

jmkhenka said:
there is no reason to invest in USB 3 gear when all you really need is higher amperage, wich you often get from stand-alone chargers like the one supplied or you can buy in stores (just check that the output is 1000mah or more, 2000 mah is desired for effective charging).
The reason you might want to use a usb 3 PORT (cable makes no diffrence) is that usb 3 deliver more juice then usb 2, but unless it is a dedicated charger port that can supply 2000mah+ charge the port still require you to have the pad either off or stand by and even then charging will take ages.
Consider this, the supplied charger delivers 2000mah on 5v and my HTC charger to my phone has 1000mah @ 5v. Compared to the standard 550mah on a singel non-charger adapted USB port on a computer.
Click to expand...
Click to collapse
Not quite correct. The charger senses a gnd connection on pin 7 of the USB 3.0 connector and delivers 15V @2a to the TF and or Dock. There are only 4 conductors in a USB 2.0 Cable. so the charger only delivers 5V as it does not see the gnd on pin 7. For all the technical details see the thread started by DevCake where the voltages and currents have actually been measured. A 5V 20A charger will not be as good as one with 11-15V at about 2A as the charger is not a constant current charger but a power source for a charge controller ( controlling the current) in the TF.

I appreciate that it is a slightly older thread and not sure if what I'm about to post is already known by TF owners but here goes anyway.
The discussion has moved on to cables but the threqad title is about a charging indicator. I've discovered that the battery icon in the bottom RH corner has a lightning symbol through it when it is being charged.
Sorry if it's old news but I've only had my TF one week and thought other users might not be aware

Really wish they would have put in a fancy multicolor LED somewhere on the housing but we can't win them all. Even the Nook Color had an LED on the cable itself.

Charging Cables

Do the TF200/Prime/Other cables word with the Infinity?
I'm thinking about just getting a couple of spare cables here: http://www.amazon.com/gp/product/B007GJR7GS/ref=ox_sc_act_title_1?ie=UTF8&smid=A1HKVQTYI2W24Y but want to make sure that they fit and work.
Also, (perhaps a separate thread?) Can we use any AC to USB converter (and cable) to charge the Infinity? The adapter bundled with mine was a bit more robust than normal adapters so I'm inclined to think no, but wanted to confirm before I get a spare one.

My cable from my prime works with the infinity....I also tried a cigarette to USB plug in my Jeep and it would not charge the Infinity

if anyone finds out if other USB charging adapters work successfully, could you please post about it?
much thanks

JMH-ESH said:
if anyone finds out if other USB charging adapters work successfully, could you please post about it?
much thanks
Click to expand...
Click to collapse
None of them will work. The charging cable for the TF700 doesn't use any the USB pins for charging. It has additional USB3-style pins hidden up inside the connector. Also, the stock charger outputs 15V which I doubt we'd find on any standard USB charger.

DefectiveRobot said:
None of them will work. The charging cable for the TF700 doesn't use any the USB pins for charging. It has additional USB3-style pins hidden up inside the connector. Also, the stock charger outputs 15V which I doubt we'd find on any standard USB charger.
Click to expand...
Click to collapse
Actually, correcting my previous post, it can charge via a USB 2.0 connection (as on a standard USB charger) but very very slowly. The current is not enough to charge it while the screen is on. The display will read, "Not Charging" but it actually does. See the following thread for more info:
forum.xda-developers.com/showthread.php?t=1788055

I want to extend the charging cable. Can I use any regular USB M to F cable or do I need something specific?

Aria807 said:
I want to extend the charging cable. Can I use any regular USB M to F cable or do I need something specific?
Click to expand...
Click to collapse
you need a usb 3.0 extension cord to extend the cable

wolfman87 said:
Do the TF200/Prime/Other cables word with the Infinity?
I'm thinking about just getting a couple of spare cables here: but want to make sure that they fit and work.
Also, (perhaps a separate thread?) Can we use any AC to USB converter (and cable) to charge the Infinity? The adapter bundled with mine was a bit more robust than normal adapters so I'm inclined to think no, but wanted to confirm before I get a spare one.
Click to expand...
Click to collapse
I got this one and it worked for me.
off of e- bay Item number: 180937129661

DefectiveRobot said:
None of them will work. The charging cable for the TF700 doesn't use any the USB pins for charging. It has additional USB3-style pins hidden up inside the connector. Also, the stock charger outputs 15V which I doubt we'd find on any standard USB charger.
Click to expand...
Click to collapse
Umm... did you actually test that? I went through my charger pin by pin with a multi-meter and found 5 VDC between pins 1 and 4. Look closely at the charger, it says it can supply 5VDC @ 2A or 15VDC @ 1.2 A. The only reason for switching to 15VDC would be if they had some sort of feedback signal on pins 2 and 3 going to the plug-in adapter to signal that the battery was fully charged and tell it to switch to a higher voltage/lower current mode.

ASUS standard charging cable has 5 pins instead of 4. I'm betting the feedback you're looking for actually occurs on the 5th pin.

TF700 charger/cable requirements?

I was planning on using my iPad charger to charge my phone, iPad, and TF700 while on the road. It puts out more than enough current at +5 volts but doesn't work with the TF700. The Asus charger outputs +15 and +5 and works with the Asus cable and an OEM cable, and also works charging my phone using a micro-B cable. Is the TF700 charged using +15 volts?
The TF700 booklet says it can be charged from a USB port, which is +5 volts. While that may be an impossible task on a PC, it still means that the TF700 can be charged using a USB cable and +5 volt charger. Why doesn't it work? Has anyone gotten a 2A +5V OEM charger to work with the TF700? Is there a pinout diagram for the Asus cable and charger anywhere? Thanks.

Not sure if this helps, but the keyboard dock (unlike the tablet itself) can only be charged from the charger, not usb, so it must draw more power than a standard usb.
It's also possible your Apple charger usb port is pinned to only work with "apple approved" products? Have you been able to charge other devices from it?
Sent from my ASUS Transformer Pad TF700T using xda app-developers app

phiffoo st o
Studiozut said:
Not sure if this helps, but the keyboard dock (unlike the tablet itself) can only be charged from the charger, not usb, so it must draw more power than a standard usb.
It's also possible your Apple charger usb port is pinned to only work with "apple approved" products? Have you been able to charge other devices from it?
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Click to expand...
Click to collapse
I don't have a dock nor am I trying to charge the TF700 from a PC USB port. The Apple charger puts out +5 volts to anything plugged into to it and the TF700 apparently "knows" when the Apple charger is connected to it because it turns on if it's off.

Haidozo said:
I was planning on using my iPad charger to charge my phone, iPad, and TF700 while on the road. It puts out more than enough current at +5 volts but doesn't work with the TF700. The Asus charger outputs +15 and +5 and works with the Asus cable and an OEM cable, and also works charging my phone using a micro-B cable. Is the TF700 charged using +15 volts?
The TF700 booklet says it can be charged from a USB port, which is +5 volts. While that may be an impossible task on a PC, it still means that the TF700 can be charged using a USB cable and +5 volt charger. Why doesn't it work? Has anyone gotten a 2A +5V OEM charger to work with the TF700? Is there a pinout diagram for the Asus cable and charger anywhere? Thanks.
Click to expand...
Click to collapse
It will charge VERY SLOWLY on 5v USB while turned off. Will not charge via 5v USB while on. The TF700 requires at least 12V/2A to charge while on. 15V/1.2A is what's recommended by Asus (based on their proprietary charger specs).
Here's a battery I use to charge my TF700 while on the go, and it also charges my phone, BT headsets and other devices. http://forum.xda-developers.com/showthread.php?t=1796750. Great battery, I highly recommend it.

AspenMan said:
It will charge VERY SLOWLY on 5v USB while turned off. Will not charge via 5v USB while on. The TF700 requires at least 12V/2A to charge while on. 15V/1.2A is what's recommended by Asus (based on their proprietary charger specs).
Here's a battery I use to charge my TF700 while on the go, and it also charges my phone, BT headsets and other devices. http://forum.xda-developers.com/showthread.php?t=1796750. Great battery, I highly recommend it.
Click to expand...
Click to collapse
You are correct. With the TF700 turned off, an hour of charging with the 2A Apple charger had increased the battery level from 29% to 34%. I expect the TF700 to be fully charged in only 14 hours!
Thanks.

Have you considered a power inverter? I use this one with my A100 though I use a FM transmitter to charge my phone.

Somewhat related to this: in the past, when using devices that have a power block with a USB port and a charge/sync cable, such as an iPod or even my Galaxy Nexus, I've used a USB extension cable to give me a little extra slack. For some reason, that doesn't seem to work with the Infinity. I've tried three different USB extension cables and the tablet never shows that it's charging. Is there a certain USB cable I can use for this?

AspenMan said:
It will charge VERY SLOWLY on 5v USB while turned off. Will not charge via 5v USB while on. The TF700 requires at least 12V/2A to charge while on. 15V/1.2A is what's recommended by Asus (based on their proprietary charger specs).
Here's a battery I use to charge my TF700 while on the go, and it also charges my phone, BT headsets and other devices. http://forum.xda-developers.com/showthread.php?t=1796750. Great battery, I highly recommend it.
Click to expand...
Click to collapse
I have that same exact charger. do you use the "I" or the "S" USB port?
I never knew what the difference between the two were
EDIT...i shouldve read the thread lol...you modified yours

I ordered a pair of cables from eBay item # 320942102464. A house charger and a car charger. I just plugged in the dock and seems to be working fine.

USB 3.0?
FrontRowJoe said:
Somewhat related to this: in the past, when using devices that have a power block with a USB port and a charge/sync cable, such as an iPod or even my Galaxy Nexus, I've used a USB extension cable to give me a little extra slack. For some reason, that doesn't seem to work with the Infinity. I've tried three different USB extension cables and the tablet never shows that it's charging. Is there a certain USB cable I can use for this?
Click to expand...
Click to collapse
Are you using a USB 2.0 or 3.0 extension cable? It's my understanding that the Infinity uses USB 3.0.

You need 15v to charge the Pad (I kept thinking 11, but the adapter says 5V or 15V output). This makes sense since there are more pins. Standard USB has 5v rails (ther are 4 pins, I 5v power, Data+, Data-, ground). Since our chargers are 40 pins, my assumption is that there are more pins dedicated to charging and multiple pins dedicated to data (possibly a few that are dedicated and some that are for whatever data is being passed through (assumption)). If the adapter is outputting 11v then it can send more power through the cord and multiple pins can push electricity through. When you are only pulling 5v (i.e. most AC->USB transformers) you will need a lot more time to charge, hence the trickle effect (and don't turn on the screen!)

It can be charged with 5v if the tablet is off.
There is a jumper in the USB cable itself that kicks the Asus charger into 15v mode so it doesnt accidentally fry your devices if you plug in, say, your cell phone to charge for a bit.
To make a custom cable just throw 15v across three pins in the connector (5v each). You can find all the info here: http://forum.xda-developers.com/showthread.php?t=1633747
Yes, i know its for the prime, the connector is exactly the same, the pinouts SHOULD be identical.

DIY approach?
I've got a TF700T and a TF201 dock and a misplaced charger. I ran into the same trouble that a lot of people here did ....... generic chargers not working, USB on my computer only trickle charges the tablet, nothing for the dock, etc.......
After much poking around I learned that both require 12 volts to charge. That said I dug thru my junk and found a 2.2a 12v DC wallwart. I hacked apart a USB extension cable for it's female end, broke out my breadboard and put together a 12v USB connector... that after several days of charging and draining.... charging and draining .... works like a champ.
So to be a bit more specific, pin 1 that's normally 5+ volts I'm supplying 12+. Pin 4 is ground same as always and that's it. If you wish let me know I can probably throw up a little illustration or something.
Since I did that I've refined the whole thing a bit, cleaned it up, wired everything directly and heat shrinked the whole assembly.
It will charge both together or either one by itself in just hours EVEN while using them..... heavily. No overheating, no troubles.
HTH

AnakiMana said:
Are you using a USB 2.0 or 3.0 extension cable? It's my understanding that the Infinity uses USB 3.0.
Click to expand...
Click to collapse
I think the cable type might only matter after the ics.30 update when I was on the ics.26 I could use a standard extention cable, I had my device plugged in when I updated and my device stopped charging, and I freaked out thinking I broke something. But after finally removing the extention my tablet would charge. I have not tried to use the extention cable since so I don't know if it works with jb.
Asus Transformer Infinity running CleanRom 2.7.x

Bluemgt06 said:
I think the cable type might only matter after the ics.30 update when I was on the ics.26 I could use a standard extention cable, I had my device plugged in when I updated and my device stopped charging, and I freaked out thinking I broke something. But after finally removing the extention my tablet would charge. I have not tried to use the extention cable since so I don't know if it works with jb.
Asus Transformer Infinity running CleanRom 2.7.x
Click to expand...
Click to collapse
The Asus charger switches its output to 15V from 5V when a USB3 plug is detected. If you need an extesion cable to charge the Transformer, you'll have to use USB3 extension cable. If you want to use this charger on other devices, be sure to use a USB2 cable to not to fry it with 15V.

Kraka said:
If you want to use this charger on other devices, be sure to use a USB2 cable to not to fry it with 15V.
Click to expand...
Click to collapse
Thanks for the warning - I hope there are no cables with USB3 and micro-USB2 plugs though.

Nexus 4 car charger??

Hi
Im searching for a car charger for the nexus 4 that will charge the device even on navigation running...I now that the Motorola Rapid car charger was good with the galaxy nexus.I dont know if itS ok with the nexus 4 because on the LG charger it sayS 1.2A?I read that the Bracketron Universal Dual USB Car Adapte 2.1A will just work as AC charger if plugged in with a USB charging only cable...but i cant find those cable to order online here i Canada...and i dont wanna do it myself and modify a regular usb cable ...Soo if someone can help me it would be much appreciated.

aldenh said:
Hi
Im searching for a car charger for the nexus 4 that will charge the device even on navigation running...I now that the Motorola Rapid car charger was good with the galaxy nexus.I dont know if itS ok with the nexus 4 because on the LG charger it sayS 1.2A?I read that the Bracketron Universal Dual USB Car Adapte 2.1A will just work as AC charger if plugged in with a USB charging only cable...but i cant find those cable to order online here i Canada...and i dont wanna do it myself and modify a regular usb cable ...Soo if someone can help me it would be much appreciated.
Click to expand...
Click to collapse
You dont have to have a modded cable if your car charger already has the data pins shorted. Im using the motorola rapid charger too and it works fine, it will charge your phone as AC and give enough power to recharge the battery with navigation on. if you want something a bit better you can try this one , they ship to canada. My rapid charger broke so i bought it a few days ago. Reviews says the trident will give around 8-900mA, the moto charger outputs around 6-700mA.

I would only buy a premium brand here. If you see how no name mains adaptors are made... the risk of blowing up something expensive is just too big.
I wnent with the Sony AN-400 / 401, because it is rated at 1.2 amps exactly, is small, and was reported to work fine.
For some regulator disasters:
http://hackaday.com/2012/08/15/buying-cheaper-electronics-and-not-saving-money/ <- a USB car charger without components, putting 12 volts straight on USB.
http://www.youtube.com/watch?v=wi-b9k-0KfE <- teardown of imitation apple mains adapter, showing no output protection and very little gap between mains voltage and output circuit. Good info, but style of presentation is not my cup of tea.
So that is why I went with a premium brand.

that's one charger from one factory that some guy that didnt know what he was doing and ordered thousands, without testing them. He probably went for the 25 cent super deluxe model...
Well reviewed chargers from xda members here and not to mention the hundreds of people on amazon are a safe bet. Here's a 8+page thread on the charger i linked. Your premium brand name sony charger is made in china too.

aldenh said:
Hi
Im searching for a car charger for the nexus 4 that will charge the device even on navigation running...I now that the Motorola Rapid car charger was good with the galaxy nexus.I dont know if itS ok with the nexus 4 because on the LG charger it sayS 1.2A?I read that the Bracketron Universal Dual USB Car Adapte 2.1A will just work as AC charger if plugged in with a USB charging only cable...but i cant find those cable to order online here i Canada...and i dont wanna do it myself and modify a regular usb cable ...Soo if someone can help me it would be much appreciated.
Click to expand...
Click to collapse
1. Get a bullet-type 2.1 amp USB charger:
http://www.amazon.com/iFlash-Lighter-Charger-Adapter-Output/dp/B008LM45I2/ref=pd_sbs_misc_7
2. Add a "charge only" USB cable:
http://www.amazon.com/Mediabridge-U...357979634&sr=1-11&keywords=usb+charging+cable
This combo charges a Nexus 7 (which requires even more current) with navigation on!

neotekz said:
that's one charger from one factory that some guy that didnt know what he was doing and ordered thousands, without testing them. He probably went for the 25 cent super deluxe model...
Well reviewed chargers from xda members here and not to mention the hundreds of people on amazon are a safe bet. Here's a 8+page thread on the charger i linked. Your premium brand name sony charger is made in china too.
Click to expand...
Click to collapse
Thanks so much for the link.So is this Trident limited charger same as the Powergen dual usb??I mean is the quality ok???this charger has the data pins shorted and comes with a regular micro usb cable?

M3Rocket said:
1. Get a bullet-type 2.1 amp USB charger:
http://www.amazon.com/iFlash-Lighter-Charger-Adapter-Output/dp/B008LM45I2/ref=pd_sbs_misc_7
2. Add a "charge only" USB cable:
http://www.amazon.com/Mediabridge-U...357979634&sr=1-11&keywords=usb+charging+cable
This combo charges a Nexus 7 (which requires even more current) with navigation on!
Click to expand...
Click to collapse
That looks ok,but I cant find a good quality usb charge only cable that ships to canada :

I have a el cheapo usb charger from ebay and I used my usb cable that came with the phone...and when i pluged it in it switches from AC charge to USB ever couple of seconds back and forth...so I want to try something different.

If you're into rooting and custom kernels, most of them have a fastcharge option where you don't need to have a special usb cable, or, attempt to short the D- and D+ lines.
Monoprice has a 2.1A bullet charger for a bit cheaper:
http://www.monoprice.com/products/p...=10826&cs_id=1082603&p_id=8858&seq=1&format=2

aldenh said:
Thanks so much for the link.So is this Trident limited charger same as the Powergen dual usb??I mean is the quality ok???this charger has the data pins shorted and comes with a regular micro usb cable?
Click to expand...
Click to collapse
i cant say for sure until i get it sometime next week but i think so. im in canada too and couldnt find the powergen anywhere that would ship here.
There are some other brands that are good too but i like this one cause it's dual usb like my old moto rapid charger. If you dont need that you can get some smaller ones that will work just make sure they are well review and can output around 1A. The one that bfspider spider recommends is a good bet too since monoprice is pretty reputable store and will ship to canada.
aldenh said:
I have a el cheapo usb charger from ebay and I used my usb cable that came with the phone...and when i pluged it in it switches from AC charge to USB ever couple of seconds back and forth...so I want to try something different.
Click to expand...
Click to collapse
You can try to mod this one in the mean time, just take it apart and attach the two data pins(they are the two middle ones). Solder is best but if you cant you can just use pilers and bend the pins until they touch. i did this with a few of my chargers too and it works to make them AC but it wont increase the output if its low to begin with.

neotekz said:
i cant say for sure until i get it sometime next week but i think so. im in canada too and couldnt find the powergen anywhere that would ship here.
There are some other brands that are good too but i like this one cause it's dual usb like my old moto rapid charger. If you dont need that you can get some smaller ones that will work just make sure they are well review and can output around 1A. The one that bfspider spider recommends is a good bet too since monoprice is pretty reputable store and will ship to canada.
Click to expand...
Click to collapse
Once again thank you so much.I found the Trident charger here with free shiping to USA and Canada and good reviews

I just bought a "Samsung Car Adapter" with this output: 5V 1A
Is this a good CAR adapter for Nexus 4?
The Nexus 4 "LG travel charger", has this Output: 5V 1.2A
I wan't to use this Samsung Car Adapter while using GPS on the Car or playing games on the Car without lowering the battery.

thesebastian said:
I just bought a "Samsung Car Adapter" with this output: 5V 1A
Is this a good CAR adapter for Nexus 4?
The Nexus 4 "LG travel charger", has this Output: 5V 1.2A
I wan't to use this Samsung Car Adapter while using GPS on the Car or playing games on the Car without lowering the battery.
Click to expand...
Click to collapse
I have the same. Works perfect
Sent from my sexy Nexus 4

M3Rocket said:
1. Get a bullet-type 2.1 amp USB charger:
http://www.amazon.com/iFlash-Lighter-Charger-Adapter-Output/dp/B008LM45I2/ref=pd_sbs_misc_7
2. Add a "charge only" USB cable:
http://www.amazon.com/Mediabridge-U...357979634&sr=1-11&keywords=usb+charging+cable
This combo charges a Nexus 7 (which requires even more current) with navigation on!
Click to expand...
Click to collapse
FYI, this adapter should allow most existing "iPad" chargers (1.2A or higher) + any USB cable to work well with the Nexus 4.
The problem is that Apple products deviate from USB charging standards. As a result, most chargers try to be compatible with iDevices and also deviate from the standards. So when standard-compliant devices try to follow the standards, the chargers refuse to follow the standards, and the devices get upset with each other. Fortunately, they fall back and settle on a lower-power charging rate.
If you want to buy chargers that are very clear on what they support, check out MediaBridge (also available on Amazon).

Why does a bog standard USB cable work in the car for me? Using a proper off-line sat nav my phone was fully charged

neotekz said:
You dont have to have a modded cable if your car charger already has the data pins shorted. Im using the motorola rapid charger too and it works fine, it will charge your phone as AC and give enough power to recharge the battery with navigation on. if you want something a bit better you can try this one , they ship to canada. My rapid charger broke so i bought it a few days ago. Reviews says the trident will give around 8-900mA, the moto charger outputs around 6-700mA.
Click to expand...
Click to collapse
So i got that Trident charger that you recommended....the quality looks good...but when I tried it in the 1A and 2A port with the usb cable that comes with it,it shows USB charging but when I use the HTC usb cable that came with my HTC one S it shows AC charging....its so confusing and I just dont get it....that HTC cable is a sync and charge cable.

The generic T-Mobile car charger available at T-Mobile stores charges just fine. I believe it is at least 1 amp. Its black, has a purple white small led indicator when charging. The USB end looks like a little block and the cord is an accordion type and it also has a a female USB slot in it to plug something else in at the same time but I believe whatever USB cord you plug in there only charges at .5 amp. With this charger I can run navigation and Bluetooth and Pandora and message at the same time and it will charge.
Sent from my often RMA'd Nexus 4, So that I can use the one I'm using now when I get the 6th and hopefully final one.

I just dont get it why does it with one cable show USB charging and with the other HTC cable AC charging?:S
Sent from my Nexus 4 using xda app-developers app

You're awesome.

Vitamin_D said:
You're awesome.
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????

[Q] Charger/Charging Questions

I searched through some of the threads and I didn't see one directly related to my question so here it goes. I have been unable to get my tablet and or dock to charge with any other charger other then the one it came with. I'ver tried a samsun tablet charger, an 8w usb charger, other misc wall blocks etc. Will our tablet only charge with the asus charger? Any thought's or ideas on this would be great.

eeeeeeeeek said:
I searched through some of the threads and I didn't see one directly related to my question so here it goes. I have been unable to get my tablet and or dock to charge with any other charger other then the one it came with. I'ver tried a samsun tablet charger, an 8w usb charger, other misc wall blocks etc. Will our tablet only charge with the asus charger? Any thought's or ideas on this would be great.
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According to some it is possible to use a USB 5V charger to charge but you need the patience of Job and have it shut down. The simplest answer is that this tablet cannot be charged from ANY USB 5V power source.
The tablet charges at 12V 1.2A. The ASUS Charger is wired in such a way that when using the supplied cable it charges the tablet with 12V @ 1.2 A. When any other USB cable is used the charger will output 5V so that it can be used to charged other devices.
The only other source of chargers is from eBay. Just make sure you buy one that puts out 12Volts with a minimum of 1.2Amps.
There are other answers to this same question just maybe not the way you posed it!

eckka said:
According to some it is possible to use a USB 5V charger to charge but you need the patience of Job and have it shut down.
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Yes, the tablet (but not the dock) will charge from a 5V USB port, but it will be *very* slow (a few % per hour), and the tablet must be in standby or off.
eckka said:
The tablet charges at 12V 1.2A.
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The original charger outputs 15V.

_that said:
Yes, the tablet (but not the dock) will charge from a 5V USB port, but it will be *very* slow (a few % per hour), and the tablet must be in standby or off.
The original charger outputs 15V.
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Yes the original is 15V, it does actually switch to 5V if a non transformer USB device is connected. I'll add that a lot of the cheap eBay chargers output 11V to 12V which is why we have so many issues with the device trying to figure out what it is connected to.... imo.

A regular USB charger is 5V.
The tablet starts detecting a charge at 12V.
The original charger is 15V.
It CAN be charged from 5V, but you have to shut it down and it charges at 3-5% an hour. This isn't "some" mentioning it; it's in the bloody manual.
@sbdags If the cheap chargers indeed charge at between 11V and 12V, that explains the constant beeping people experience whilst using them. It keeps varying between "Charging" and "Not Charging".

So basically it sounds like the best way to charge is from the original charger/cable that came with the unit. This is no biggie. I was just trying to understand why a 8v battery back wasn't charging the tablet, but it wasn't idle, i had it on. So if I wanted to use that I would need to power off the device and it will essentially trickle charge. I don't see to many 15v usb car chargers on the market, though I haven't done extensive research. Thanks for the input.

It does charge (slowly) when on and idle - I regularly charge it overnight hooked up to my PC.