Database Users

Charging from USB?

I keep getting a red X Through my battery when plugged into my laptop to charge, is this normal? I really dont want to plug into the wall to charge

Really hope this doesn't become the case and that it will charge off of any USB charger...in particular like the one in my car that accepts USB Devices.

My friend has a galaxy and has the same issue, idk if its our laptops or what

Okay this has been address. please search but ill answer for you.
This device uses 5v 2a to charge. Hence the wall unit. you computer is 5v 1a or 1.5a (its not enough)
The device will maintain and in some cases when screen off slowly charge when plugged into computer or usb adaptor with the red "x" through it.
you can find a usb adapter cable which has a switch to allow you to charge while connected to a computer. its a data and charge switch. search for it. i think its on ebay.
also you can find on amazon or google shopping wall chargers for the p1000 which work for like 8$

dsh897 said:
Okay this has been address. please search but ill answer for you.
This device uses 5v 2a to charge. Hence the wall unit. you computer is 5v 1a or 1.5a (its not enough)
The device will maintain and in some cases when screen off slowly charge when plugged into computer or usb adaptor with the red "x" through it.
you can find a usb adapter cable which has a switch to allow you to charge while connected to a computer. its a data and charge switch. search for it. i think its on ebay.
also you can find on amazon or google shopping wall chargers for the p1000 which work for like 8$
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Click to collapse
thanks, and thats very disappointing

DroidHam said:
thanks, and thats very disappointing
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Click to collapse
its not disappointing at all.what other tegra2 tablet can even trickle charge through USB 2.0?

madsquabbles said:
its not disappointing at all.what other tegra2 tablet can even trickle charge through USB 2.0?
Click to expand...
Click to collapse
My xoom could.

DroidHam said:
My xoom could.
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Click to collapse
my 4 didn't and neither does a bunch of other peoples xooms. even if it did it would only charge at the same rate as the gt10.1 charges - 5 watts. that's the max USB 2.0 spec.

It should be easily solved with a 2 x male 1 x female usb cable
http://ep.yimg.com/ca/I/yhst-19158458583166_2164_10126151

DroidHam said:
I keep getting a red X Through my battery when plugged into my laptop to charge, is this normal? I really dont want to plug into the wall to charge
Click to expand...
Click to collapse
It charges through usb when the tab is powered off.

zaphyr said:
It should be easily solved with a 2 x male 1 x female usb cable
http://ep.yimg.com/ca/I/yhst-19158458583166_2164_10126151
Click to expand...
Click to collapse
Where does one buy said cable?

hshah said:
Where does one buy said cable?
Click to expand...
Click to collapse
Depends on your country I guess, I bought mine from Dustinhome.se:
http://www.dustinhome.se/pd_5010312807.aspx

Lou2serious said:
It charges through usb when the tab is powered off.
Click to expand...
Click to collapse
even with it on it'll charge slowly.

Those double cables are cheap (around £3 in the UK) so I might pick up a couple of those and leave them at work and in the car

hshah said:
Where does one buy said cable?
Click to expand...
Click to collapse
http://cgi.ebay.com/New-USB-2-0-Fem...871?pt=LH_DefaultDomain_0&hash=item27ba21e847

Having this Y-cable will also help with the fact that the USB cable that came with the tablet is so sort. I have a lot of 5V power supplies around but they are all from 50ma to 1a. Can't believe this thing needs to much power to charge, I would think that 1a would be enough just to maintain it when in use.

OK, I got a couple Y/Split cables and I still have red X when plugged into two USB ports, I even tried two ports that are on different controllers... as well as two USB3 ports in my laptop. I even tried my desktop. No luck.
Has anyone gotten this to work?

I posted in the accessories section about this subject, see here;
http://forum.xda-developers.com/showpost.php?p=14890063&postcount=16
and here;
http://forum.xda-developers.com/showpost.php?p=14922116&postcount=27

The red x will show up if you are charging with anything under 2A. If I remember correctly usb 1 puts out 100ma and usb 2 & 3 put out 500ma. Even with a Y adapter you will only get 1A. If the screen is off then you will charge the battery however with the screen on, you are using the same amount of power that the usb is providing. Therefore the x because the battery is not charging.
Sent from my GT-P7510 using XDA Premium App

ericlmccormick said:
The red x will show up if you are charging with anything under 2A. If I remember correctly usb 1 puts out 100ma and usb 2 & 3 put out 500ma.
Sent from my GT-P7510 using XDA Premium App
Click to expand...
Click to collapse
With the adapter I posted about above, I never see the red x and I am charging off USB 2.
-EDIT-
To be clear, I am using a 10.1v not a 10.1 - there could be differences, but I doubt it.

Need help. My Transformer won't charge anymore

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.
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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.

car charger

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

[Q] does the N10 have separate micro USB and charging port?

Does it charge with Micro USB? Or is there separate charger that would allow for simultaneous OTG & charging? If so, is it a samsung proprietary cable?

one port. I don't see why people are all upset with a tablet having one micro-USB port? What I would do to have micro USB on my Asus transformer prime, so damn annoying!
ANd plugging into a PC will charge slowly for most phones, and it depends on tablets, some do some don't. Even then, who leaves their tablet plugged into their PC all day anyways, a big no-no for phones as we all already know, won't charge very quickly...

Are the pogo pins not for charging?

matt11601 said:
Are the pogo pins not for charging?
Click to expand...
Click to collapse
They can charge as well when the tablet is in a dock (if that ever happens...). The pogo pins are not the primary charging method when not in a dock.

Samzebian said:
one port. I don't see why people are all upset with a tablet having one micro-USB port? What I would do to have micro USB on my Asus transformer prime, so damn annoying!
ANd plugging into a PC will charge slowly for most phones, and it depends on tablets, some do some don't. Even then, who leaves their tablet plugged into their PC all day anyways, a big no-no for phones as we all already know, won't charge very quickly...
Click to expand...
Click to collapse
ah.. well for one thing, I would say the primary reason is the one I just stated: simultaneous OTG + charging.
There are users out there that do not like the limitation of having no MicroSD card.. The closest thing, without microSD, is OTG. But the problem is that you cannot constantly use it or the battery will empty [also using battery cycles, that could have otherwise been avoided, and saved for when you really need them].
So may I ask where you got this conclusion? I would like to show it to someone.

Would a usb splitter work if you wanted the device to have two ports? Just a thought.

Initial_G said:
Would a usb splitter work if you wanted the device to have two ports? Just a thought.
Click to expand...
Click to collapse
No, you'd be trying to charge the device, while it is giving out power on the same wires, to the USB OTG device.
The only way to fix it is with a kernel patch to disable outgoing power, and accept a charge with OTG.

Can't you buy an charger that fits the pogo pins. Not from google, of course.
Send from my lovely Sensation XL, from a little town in france with a very very slow internet connection.
If I succeed helping you (rare) don't forget to hit the thanks button

insevanhouts said:
Can't you buy an charger that fits the pogo pins. Not from google, of course.
Send from my lovely Sensation XL, from a little town in france with a very very slow internet connection.
If I succeed helping you (rare) don't forget to hit the thanks button
Click to expand...
Click to collapse
maybe..but on the Nexus 7, when you plugged in OTG storage, it would not charge with the pogo pins--at least I'm pretty sure I read this on xda.
so it might be like this on the Nexus 10 too, I dunno.. I guess we'll find out soon.

mvmacd said:
ah.. well for one thing, I would say the primary reason is the one I just stated: simultaneous OTG + charging.
There are users out there that do not like the limitation of having no MicroSD card.. The closest thing, without microSD, is OTG. But the problem is that you cannot constantly use it or the battery will empty [also using battery cycles, that could have otherwise been avoided, and saved for when you really need them].
So may I ask where you got this conclusion? I would like to show it to someone.
Click to expand...
Click to collapse
I was referring to charging/microUSB ports, had nothing to do with MicroSD card slots

Samzebian said:
I was referring to charging/microUSB ports, had nothing to do with MicroSD card slots
Click to expand...
Click to collapse
No, I meant, you asked why people were upset it just had one micro usb port [instead of--I assume--a charging port, and then an additional micro usb], and I said it is [at least for me] because it makes it harder to properly use external storage [that's needed for some people because of the lack of micro sd].
is there an official spec sheet that shows it charges via its only micro usb port?

Hi everyone, I was wondering what type of micro usb port was on the Nexus 10, I cant seem to find any close up photos, I am a noob when it comes to tablet and smartphones, but after looking around for OTG cables and such for my futur N10, I came accros micro usb type A which is bigger and thicker, and micro usb type B which is nice and thin, so I'm kind of confused, which type do I need for N10, can anyone fill me in?
Sorry if I posted this in the wrong thread, but it would probably of been silly to start one for such an easy question . ^^

mvmacd said:
Does it charge with Micro USB? Or is there separate charger that would allow for simultaneous OTG & charging? If so, is it a samsung proprietary cable?
Click to expand...
Click to collapse
Yes, via a normal charger adapter. The USB cable is pluggable to the charger.
br, josh.

mvmacd said:
ah.. well for one thing, I would say the primary reason is the one I just stated: simultaneous OTG + charging.
There are users out there that do not like the limitation of having no MicroSD card.. The closest thing, without microSD, is OTG. But the problem is that you cannot constantly use it or the battery will empty [also using battery cycles, that could have otherwise been avoided, and saved for when you really need them].
So may I ask where you got this conclusion? I would like to show it to someone.
Click to expand...
Click to collapse
Sorry, but then buy a tablet that has a MicroSD. The Nexus series doesn't have MicroSD. If you don't like that, there are other options.

Charging Issue?

So I am coming from a Galaxy Nexus and was trying to use the little 1amp Samsung chargers from that. Noticed the bundled charger provides a bit more output at 1.8 amps?
Anyways, switched to the bundled charger but the phone complains at me unless I use the bundled cable. Any ideas?

MoNsTeReNeRgY22 said:
So I am coming from a Galaxy Nexus and was trying to use the little 1amp Samsung chargers from that. Noticed the bundled charger provides a bit more output at 1.8 amps?
Anyways, switched to the bundled charger but the phone complains at me unless I use the bundled cable. Any ideas?
Click to expand...
Click to collapse
Simple. The other cables cant handle that current.

FynxSyndct said:
Simple. The other cables cant handle that current.
Click to expand...
Click to collapse
Mhmm never thought of that I guess since never ran into that problem.
Also been using this 15ft monoprice cable for ages and it cant seem to handle it. Bummer since its handy to have this cable in my room.
http://www.monoprice.com/products/p...=10303&cs_id=1030307&p_id=5460&seq=1&format=2

FynxSyndct said:
Simple. The other cables cant handle that current.
Click to expand...
Click to collapse
I don't think that's true, I had my charger and cable from my Note 2 which is a 2 amp charger, and that didn't allow my G2 to charge at full speed either.

MoNsTeReNeRgY22 said:
Mhmm never thought of that I guess since never ran into that problem.
Also been using this 15ft monoprice cable for ages and it cant seem to handle it. Bummer since its handy to have this cable in my room.
http://www.monoprice.com/products/p...=10303&cs_id=1030307&p_id=5460&seq=1&format=2
Click to expand...
Click to collapse
This is frustrating to me. I also had one of those monster monoprice cables. I used it for my Galaxy Nexus and then for my Galaxy S3.
Does anyone have a long USB cable that will charge this phone? If so, where did you get it? What kind is it?

drathian1 said:
This is frustrating to me. I also had one of those monster monoprice cables. I used it for my Galaxy Nexus and then for my Galaxy S3.
Does anyone have a long USB cable that will charge this phone? If so, where did you get it? What kind is it?
Click to expand...
Click to collapse
Longer the cable, the more lose there is....
Sent from my LG-D800 using XDA Premium HD app

drathian1 said:
This is frustrating to me. I also had one of those monster monoprice cables. I used it for my Galaxy Nexus and then for my Galaxy S3.
Does anyone have a long USB cable that will charge this phone? If so, where did you get it? What kind is it?
Click to expand...
Click to collapse
Emailed monoprice support, will see what they say.

I'm having the same issues. All of my microUSB cables give me the error. Anybody know of rated cables that will work? Seems crazy that I get the error with every single one of my cables, but not with LG's bundled cable. I've used these cables to charge a DNA, GS4, HTC One, Nexus 7, etc. with no issues at all.

Might be a long shot but could vzw/att have a setting in the build somewhere that causes this? I know it's a long shot but we all know how greedy they are.
Sent from my Nexus 7 using Tapatalk 4

Isn't this phone equipped with some type of different usb that allows for faster charging? I think I read that somewhere. The other cables may not have the proper viber/wires to handle the current...
** I have no idea what I am talking about by the way**
Sent from my VS980 4G using XDA Premium 4 mobile app

craigbailey1986 said:
Isn't this phone equipped with some type of different usb that allows for faster charging? I think I read that somewhere. The other cables may not have the proper viber/wires to handle the current...
** I have no idea what I am talking about by the way**
Sent from my VS980 4G using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Are you thinking of the note3?
http://www.sammobile.com/2013/09/05...-connector-for-faster-transfers-and-charging/

MoNsTeReNeRgY22 said:
Are you thinking of the note3?
http://www.sammobile.com/2013/09/05...-connector-for-faster-transfers-and-charging/
Click to expand...
Click to collapse
No referring to the "quick charge"
http://m.pocketnow.com/2013/08/07/lg-g2-features
Sent from my VS980 4G using XDA Premium 4 mobile app

Just an FYI, the blackberry Playbook micro usb charger works great on this phone. 6ft cord, 1.8 amps, can be had for 8 bux.

sam2c said:
Just an FYI, the blackberry Playbook micro usb charger works great on this phone. 6ft cord, 1.8 amps, can be had for 8 bux.
Click to expand...
Click to collapse
Do you have a link for that? Cant seem to find it for $8

http://www.ebay.com/itm/RIM-Blackbe...S_Cell_Phone_PDA_Chargers&hash=item4d1268005e
MoNsTeReNeRgY22 said:
Do you have a link for that? Cant seem to find it for $8
Click to expand...
Click to collapse

Thanks, I'll give it a shot!

When I used the LG charger & cable my phone charges the fastest I've ever seen any phone charge before.
Anybody know where to buy certified Quick Charge 2.0 chargers/cables? I know my DNA had Quick Charge 1.0 and I loved it, but I could never find more chargers or cables that supported it.

Same here. 50% to 100% in an hour and a half.

Keep in mind that there is a benefit to battery longevity when charging at lower currents.

MoNsTeReNeRgY22 said:
Emailed monoprice support, will see what they say.
Click to expand...
Click to collapse
So heres what they said.
Thank you for contacting Monoprice.com. In regards to your inquiry, the USB specification limits the length of a cable between USB 2.0 devices to 5 meters (or about 16 feet) and for USB 1.0 the limit is 3 meters (which is about 10 feet.) The longer the cable the more power it would require to charge devices and sync. You might need a active USB cable since the LG phone would require more power. At this particular length the power would charge slower. What is the the length of the OEM cable from LG that you're using? With the 1.8A charger with the 15ft cable still slower compared to the shorter USB cables?
Click to expand...
Click to collapse