Running into a problem... While charging the Tab2 from the wall outlet, it is fine, works great. While trying to charge from a USB cable and my car, it says it is charging but there is a RED X on the battery... Research says this is from a charger with insufficient amperage to charge the tablet. Since this is going in a car as an in-dash install, I will not be able to access the power button. What I need is this: A way to make the USB port in my car more powerful... I want to use this because a key turning on powers the port which in turn wakes the tablet up, then the dev option for 'STAY AWAKE WHILE CHARGING' would apply and the tab would stay on... now, this works however with that Red X, the tablet charges but not enough to make the tablet stay awake... Any work around on this? I can not find much out there on this. Even if I have to tie a new 3A USB female plug in down there, that's fine... but what I need to know is, the factory OEM Samsung car charger claims to charge the tablet fine and it is only 2 Amps... I have a 2.4A charger and it does not work.
Or... is there maybe a setting someplace that I can make the tablet not go into a data mode when plugged in so it forces a charge or something? Or a way to modify the USB port itself to charge instead of data... thinking maybe the port is telling the tablet it is a data mode and not charge mode...
have you tried a power inverter plugged into the cigarette lighter (or hard-wired)? Or a more powerful USB Car charger?
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I purchased a new vent holder with a car charger, and it charges the phone up OK when it is off, but if it is on it says charging but does not actually charge. This is especially annoying with Satnav and after an hour or two the phone dies and I don't know where I am going!
Anyone know what causes this? I guess it can't provide enough power for the device, especially when using the internal GPS, but I think it doesn't even keep up with the device is just turned on.
I am getting another charger just in case, but never had the problem on my old Touch....
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try -> start/settings/system tab/power/battery tab - uncheck the box "when the device is turned on...."
It isn't ticked...
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try ticking it..
That will have the opposite effect, it charges fine when plugged into the wall, the problem is something to do with the car.
Does anyone use satnav on a touch HD and have it charge at the same time?
Well there could be one or two issues.
On the USB port there are four connections, a positive and a negative and two data pins. When you plug your Touch HD into a PC power is supplied down the power pins and after negotiating with the USB controller chip over the two data pins the phone will pull up-to 500mA from the power supply to run and charge the phone. This is so the USB port on the PC is not damaged by the phone overloading the power supply to the port.
Without the negotiation with the USB controller chip the device will only charge at 100mA.
But 500mA is not enough to charge the phone with everything running, you will need at least 1000mA to do that (1 Ampere). So that is what your wall charger pushes out. But how does the phone know it can charge at a higher rate? Well inside the charger the data pins on the USB connector are wired in a way that the phone 'sees' that a higher current is available, and pulls a higher charging current.
So what you need is a minimum current 1 Amp car charger. If you already have a 1 Amp then the chances are that is does not have the data pins connected properly and the phone will not draw the higher current, meaning it will only charge at 100mA.
Thanks, I am going to try another one and see if that helps, perhaps it is just faulty, otherwise I will check if it is 1Amp.
Cheers.
I contacted the seller and they sent me a new one, which works. So it turns it my charger was just faulty.
What's the rating of the new one? and where did you get it from. I bought a 2amp (supposedly) but it doesn't give me more than 500mA.
I've had this problem and it sucks! As I'm always out on the road. But I have found a few solutions. I purchased a mini usb charger from asda for £6. After adjusting the backlight to medium this charger seems to keep the power level the same as it was before you plugged it in, so It doesn't let the battery go flat. I've now learnt to keep a spare charged battery in the car just in case it fails.
Is there a program/driver that will allow the leo to pull more than 500mA when connected via usb? My TP2 (CDMA) has this installed and its bad ass. I can charge faster off things like a cable box (or my computer) than the wall. It pulls ~928mA.
Right now I have a Y adapter.. I plug the power only usb into the computer and the data into an external source (like a duracell powersource mobile). tBattery reads "AC" for charger input. Then, I unplug from the powersource and plug the data part of the usb Y into the computer, hopefully forcing it to switch to usb mode while retaining high current draw. No dice, its still on AC.. and the data cable is not communicating with the computer/phone. If i were to unplug the power only cable, it would probably switch right over to usb mode and WMDC would pop up and all that. But.. I would be limited to 500mA, which is.. really weak since the phone can only use about 150 of that for charging!
Charge with your phone off may help?
That is not possible, because PC can't give more than 500mA on one USB port.
Check in Windows device manager (PC) and find Generic USB Hub. Then look on "Power" tab.
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You can't. You could burn USB port in your computer.
Mike
This is a screenshot taken from my touch pro 2.. Plugged into the usb port of my laptop. This is possible. It also is possible with my cable box. It requires a driver/app from nuerom..
http://www.nuerom.com/BlogEngine/po...g-nueBattery2-For-TP2-CDMA-v12-Build-122.aspx
btw.. ports are either in high power or low power.. 500mA should really say 500mA+... Some ports are NOT capable of doing this.. I'd imagine I could trigger the same by connecting devices to all three of my usb ports on my laptop.
many gigabyte mainboards have the function to deliver 3x more power through usb ports. ive tested myself and can only confirm it is charging within 1.5~ 2 hours completely
Yeah - maybe, but if... higher charging amperage causing battery/phone overheating and dramaticly shorting battery life. I know, that dedicated HTC HD2 charger having 5V and 1A (1000 mA), but this is TRAVEL charger and should be used only in this situation by reasons previously wroted by me. I charge my LEO only with PC.
i think it depends on the charger itself. i bought a docking station and while reading the manual i came across a switch that changes the mode between "charge" and "sync"
this lets your device acknowledge that the charger is capable of providing more mA than a normal USB port so that it can draw more power.
The ac charger (or the battery driver itself) is smart enough to trickle down the charge rate as the battery reaches maximum capacity. We have an aluminum battery cover that seems to have a heat pad to transfer that heat from the battery. The battery driver probably has provisions to stop charging if batt temp reaches a certain #.
500mA charge is not enough. The phone itself is able to draw more current than a 500mA line could provide.
I just plugged a y adapter into my laptop. Plugging only the power portion in. tBattery says USB for charger input.. Taking the data/power 'part' of the Y adapter cable and plugging it into a usb power source (with no data pins, like a duracell powersource mobile) puts the phone into ac charger input. I disconnect the duracell charger and leave only the phone plugged into my y adapter to my computer... still says AC charging.
I'm now able to charge the phone using 1 computer usb port. World doesn't end. Phone doesn't explode.
Pictures are worth a thousand convoluted paragraphs.
I have noticed the NT only charges when using the AC charger and not when connected to a PC like phones. It even has to use the cable it came with as normal micro usb cables do not work (not for charging anway). Is this right or is this posdibly a hidden setting somewhere I have missed?
romified said:
I have noticed the NT only charges when using the AC charger and not when connected to a PC like phones. It even has to use the cable it came with as normal micro usb cables do not work (not for charging anway). Is this right or is this posdibly a hidden setting somewhere I have missed?
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The computer does not provide enough amps to charge it. The first day I got mine I plugged the usb into a phone wall charger and it indicated it was charging but didnt seem to be increasing charge. I left it overnight and when I woke up i checked the charge...it didnt budge. I looked at the two wall chargers. The phone charger is a 1 amp charger while the nook charger is 1.9amp. Considering a usb from the computer only provides .5 amps there is no way it will charge.
This is the same as the nookcolor. They use the same charger and have the same limitations.
Sent from my NookColor using Tapatalk
In addition to the current difference, the cable that comes with the NC or NT has a different MicroUSB end. It is a little longer to reach the higher current pins. There are several discussions in the NC Accessories forum that go into the details.
The NC can charge via pc, as long as the usb hub is powered, or the usb ports are powered, with the provided cable micro usb cable.
Other tablets can charge over .5amp USB so it should work on the NT unless they intentionally designed it to be limited. The Lenovo ThinkPad tablet and iPad both worked via .5amp USB. Just very slowly (had to put iPad in sleep mode).
EDIT: iPad 1 for clarification, never owned the second.
Sent from my Nook Tablet using Tapatalk.
I have a newer motherboard (Gigabyte Z68XP-UD4)
when I plug my Nook Tablet into the front USB, it doesn't charge. But I just plugged it in at about 80% power into the rear USB that was red and labelled "3x USB Power" and it charged WHILE I was transferring files.
I didn't know it was charging until I plugged it into the AC and it showed 100%.
I can confirm it with video evidence if you need it because I'm not one to spread misinformation.
My Giga X58A-UD7 will charge mine too. The option must be enabled in The BIOS in order for the additional Amps to be dispensed. And, it will only work on the onboard (rear) USB ports.
Am I correct in thinking that the USB Standard must include a provision for optional high power pins that may not be present in all USB cables - or chargers?
If I have a standard microUSB cable, can I use my 3x port to charge my NT or do I need to use the special longer connector cable that came with the NT?
Another poster said the Nook USB connector was actually longer, so the high power pins would reach the recessed ones.
Bottom line - don't assume just any cable will work.
Are thenook color and tablet chargers the same? im looking to pick up a spare on ebay,
It's the same thing as the ipad. It will say not charging but it actually does just reaaaaaaaaaaally slow.
dermotti said:
Are thenook color and tablet chargers the same? im looking to pick up a spare on ebay,
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They appear to be the same or at least work the same. I have one charger downstairs and one upstairs and the tablet and color charge fine on either one. Just make sure to use the B&N cable, unless you want to wait a while.
So does anybody know where we can pick up chargers cheap? I already have like 5 micro usb chargers and it sucks I cant use them.
AFAIK the NT and NC use the same power supply. My NC with CM 7.1 draws about 600-700 milliamps (according to the Battery Monitor Widget). I have successfully charged it from a PC using a standard micro USB cable. Here's the catch:
- when you connect the tablet to the charger it will turn on. Power down the tablet completely. It will then charge, but takes about 12 hours.
When I plug into the wall or use a power inverter in my car, it says "charging AC" and charges quicker. Although if I use a car USB dongle charger, it goes into "charging USB" mode and unfortunately, charges much slower. This really ticks me off as I just picked up a rapid charging 2.1amp(2100mA) USB car dongle.
Is there a way to tell the phone to charge as AC instead of USB? Or at least an app/widget that will change it?
voxigenboy said:
When I plug into the wall or use a power inverter in my car, it says "charging AC" and charges quicker. Although if I use a car USB dongle charger, it goes into "charging USB" mode and unfortunately, charges much slower. This really ticks me off as I just picked up a rapid charging 2.1amp(2100mA) USB car dongle.
Is there a way to tell the phone to charge as AC instead of USB? Or at least an app/widget that will change it?
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max current in the USB spec is between 500 and 900 mA depending on version. Congrats, you got scammed. Take it back.
Edit: Correction, there has been a modification to the spec to allow, ostensibly, mobile devices to draw greater power when charging. The device may draw up to 1800mA when connected as a Dedicated Charging Port which disallows data transfer in this mode. Two things to note about this. First, the HTC supplied AC-to-USB adapter lists a 1000mA (1A) current output, and your users manual (you did read the manual, right?) specifies you should only use this charger with your phone. Second, despite the fact that I am not even sure you would want the phone to take 1800mA, when it's designed to charge with 1000mA, your "rapid charging" device is STILL over-specced by ~14%. Not a gamble I personally would be willing to take.
Good luck.
Edit 2: To answer your original question, no, you cannot fix this in software. The dedicated charging mode is triggered by shorting the d+ and d- data contacts. If your USB dongle doesn't do this, then the phone will never, ever be able to recognize it as a dedicated charging port and you will only get 900mA charging current at 5V per the standard USB spec.
punman said:
Edit 2: To answer your original question, no, you cannot fix this in software. The dedicated charging mode is triggered by shorting the d+ and d- data contacts.
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Yeah, this seemed to be the final answer for giving the Desire enough juice to charge in a car while running nav. I don't plan on using nav a lot in my daily routine, but it would be nice to have a safe, effective answer to getting an "AC Charge" in a car. I saw the picture of voxigen's 12v port -> inverter -> AC USB adapter setup, but I don't have that much room around my 12v port in my car lol.
Apsalus said:
Yeah, this seemed to be the final answer for giving the Desire enough juice to charge in a car while running nav. I don't plan on using nav a lot in my daily routine, but it would be nice to have a safe, effective answer to getting an "AC Charge" in a car. I saw the picture of voxigen's 12v port -> inverter -> AC USB adapter setup, but I don't have that much room around my 12v port in my car lol.
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i wouldn't mind continuing to use that inverter(aside from occasionally hitting my knee on it), just the downside to it is that whenever i'm playing music from my phone -> stereo, there'll be this weird buzzing/hissing sound in between tracks/when a song is paused, but while a song is playing it goes away... and it does not do that when i plug in through that usb charging dongle.
So... since getting the update, it's become a pain to charge my phone. It's stuck in usb host mode each time I plug it into the charger, the only time it charges is after the phone is completely dead and off. Any solutions? It's pretty frustrating. Thanks.
I realize this is a bit of a late reply but I get that, too. But only on certain chargers. I can charge fine via USB to computer, wall adapter, or wireless charging. But the cable I have in my car shows this host mode - cannot charge. I'm going to try the car charger that I got with the phone when I get home (currently using the one from my Motorola Bionic since that has been in the car).
Edit:
In my case using the other car charger works as it should.