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Is it safe to charge the Nook Color from a PC USB port? I tried using a iphone charger and I think it melted XD
So....I'd rather not melt my USB ports. :/ Or Blow up the nook!
Anyone have information for this?
I charged mine on an ungrounded extension card cinnected to a possibly unregulated outlet, and it broke the charger plug permanently. Burning smell and high heat and all that stuff.
Probably not my best idea. But I am not gonna say I think it happens to anything but the nook charger. That setup hasn't damaged anything else before or since.
Locklear308 said:
Is it safe to charge the Nook Color from a PC USB port? I tried using a iphone charger and I think it melted XD
So....I'd rather not melt my USB ports. :/ Or Blow up the nook!
Anyone have information for this?
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Click to collapse
When connected to a PC USB port the Nook will only detect that it is data USB connection and not a pure charger and will only try to draw 500mA which is the standard USB current limit. Under these conditions the Nook will only charge very slowly particularly if it is active with the screen lit.
When connected to a real charger like the Nook charger that has the data lines shorted to indicate it is a pure high power charger then the Nook will attempt to draw up to 2000mA. Any charger worth its salt will supply whatever it can and protect itself against overheating. Cheap and nasty chargers could potentially have overheating problems.
I have successfully used other chargers in place of the standard one. E.g a HP Touchpad charger and a car 2A USB charger.
Avoid this compatibility problem by using a standard micro USB cable when charging with a charger other than the standard NC charger. I charge my NC all the time with one of my numerous HTC plug-in chargers and a standard micro USB cable.
mr72 said:
Avoid this compatibility problem by using a standard micro USB cable when charging with a charger other than the standard NC charger. I charge my NC all the time with one of my numerous HTC plug-in chargers and a standard micro USB cable.
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So using a regular micro usb cable will allow safe charging?
Locklear308 said:
So using a regular micro usb cable will allow safe charging?
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Here is how I think it works.
Nook will only request up to 500mA charge rate if it detects that the cable is plugged into a regular USB port like on a PC with data connections. This is irrespective of whether you use the B&N cable or an alternative microUSB cable. There is almost 0 risk in this arrangement.
If the Nook is connected via a standard microUSB cable to a charger that signals it is a high power charger by having shorted data lines then it can get up to around 1000mA of charge from it.
If the Nook is connected via the B&N cable to a charger that signals it is a high power charger by having shorted data lines then it can get up to around 2000mA of charge from it. This is just because the B&N cable has extra voltage supply pins at the microUSB end and tries to spread the load to avoid stressing the individual pins with two much current. Without these extra pins it will not request the extra current through them.
In both the second and third case it is possible that a poorly designed charger could signal the ability to supply the higher current and then suffer because it did not have the overload / over-heating mechanisms to deal with it. One could argue that evolution should kick in at this point and destine this type of charger to the well-deserved scrap heap
bobtidey said:
Here is how I think it works.
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Well, that's sort of close.
But the NC doesn't "sense" anything about the charger. The stock NC charging cable with the light-up horseshoe has the pins shorted and is also a slightly different connector type such that it cannot be plugged into a normal micro-USB on a device besides a NC. So if you plug THIS CABLE into the NC, then it will draw 2A from whatever is plugged into the other end of the cable. If the thing on the other end of the cable is the NC charger, you are in good shape, since it can safely deliver 2A of current. If you plug the other end of the NC stock cable into an iPhone wall charger or a computer USB port, some other generic wall charger, then it will likely draw more current than the charger or port can safely deliver and may damage the charger or cause a fire.
If you use a standard micro-USB cable, regardless of what charger you use (including the stock B&N charger), it will only draw about 500mA of current and charge the NC more slowly, but it will work safely with pretty much any generic USB port either on a computer or a run of the mill USB wall charger such as those that come with nearly every Android phone on the market, or a charge dock, USB cigarette lighter adapter for your car, etc.
So the key is: use the B&N stock NC CABLE ONLY with the stock B&N wall charger. Use a generic micro-USB cable with any charger including the B&N wall charger. It's all about the cable.
mr72 said:
Well, that's sort of close.
But the NC doesn't "sense" anything about the charger. The stock NC charging cable with the light-up horseshoe has the pins shorted and is also a slightly different connector type such that it cannot be plugged into a normal micro-USB on a device besides a NC. So if you plug THIS CABLE into the NC, then it will draw 2A from whatever is plugged into the other end of the cable. If the thing on the other end of the cable is the NC charger, you are in good shape, since it can safely deliver 2A of current. If you plug the other end of the NC stock cable into an iPhone wall charger or a computer USB port, some other generic wall charger, then it will likely draw more current than the charger or port can safely deliver and may damage the charger or cause a fire.
If you use a standard micro-USB cable, regardless of what charger you use (including the stock B&N charger), it will only draw about 500mA of current and charge the NC more slowly, but it will work safely with pretty much any generic USB port either on a computer or a run of the mill USB wall charger such as those that come with nearly every Android phone on the market, or a charge dock, USB cigarette lighter adapter for your car, etc.
So the key is: use the B&N stock NC CABLE ONLY with the stock B&N wall charger. Use a generic micro-USB cable with any charger including the B&N wall charger. It's all about the cable.
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Sorry. That's not true.
The B&N cable behaves like a standard USB data cable. It does not have the data pins shorted. You can use it to plug the Nook into a PC and transfer files. This would not be possible if the pins were shorted in the cable anywhere. The only difference between the B&N cable and a standard one is that is has extra power pins on the microUSB end in a deeper connector that are just used for spreading the charging current.
The B&N charger like other high power USB chargers does have the data lines shorted in it and that is what the Nook sees and causes it to switch into high current charging mode.
You can see all this in operation with a Battery monitor App like "Battery Monitor". When the Nook is connected to a data port via the B&N or other cable then the charging mode is USB and will draw up to 500mA. When it is connected via a standard cable to a charger like the B&N then it will say AC charging mode but will only draw around 1000mA (not limited to 500mA). When it is connected to the charger via the B&N cable it will also say AC charging mode but will now draw up to 2000mA as the extra pins are available.
Note that these currents are the maximum drawn in these modes. The actual value drawn depends on the state of the battery. Also they are what the Nook attempts to draw from the charger. It can't force the charger to supply 2A and any decent charger (which is most in my experience) will only supply what they can safely or will shut down if they experience overheating.
I safely use the B&N cable with a variety of chargers. I also use it to connect to PCs for data transfer and background charging (at 500mA). I also use other USB cables with both the B&N charger and with other chargers. You only get full 2A charging by using the B&N cable with a charger with data lines shorted that can supply 2A OK.
bobtidey said:
Sorry. That's not true.
The B&N cable behaves like a standard USB data cable. It does not have the data pins shorted. You can use it to plug the Nook into a PC and transfer files. This would not be possible if the pins were shorted in the cable anywhere. The only difference between the B&N cable and a standard one is that is has extra power pins on the microUSB end in a deeper connector that are just used for spreading the charging current.
The B&N charger like other high power USB chargers does have the data lines shorted in it and that is what the Nook sees and causes it to switch into high current charging mode.
You can see all this in operation with a Battery monitor App like "Battery Monitor". When the Nook is connected to a data port via the B&N or other cable then the charging mode is USB and will draw up to 500mA. When it is connected via a standard cable to a charger like the B&N then it will say AC charging mode but will only draw around 1000mA (not limited to 500mA). When it is connected to the charger via the B&N cable it will also say AC charging mode but will now draw up to 2000mA as the extra pins are available.
Note that these currents are the maximum drawn in these modes. The actual value drawn depends on the state of the battery. Also they are what the Nook attempts to draw from the charger. It can't force the charger to supply 2A and any decent charger (which is most in my experience) will only supply what they can safely or will shut down if they experience overheating.
I safely use the B&N cable with a variety of chargers. I also use it to connect to PCs for data transfer and background charging (at 500mA). I also use other USB cables with both the B&N charger and with other chargers. You only get full 2A charging by using the B&N cable with a charger with data lines shorted that can supply 2A OK.
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Well I can say that using an ipod/iphone charger is a BAD idea haha. I shall stick to the normal charger :]
Locklear308 said:
Well I can say that using an ipod/iphone charger is a BAD idea haha. I shall stick to the normal charger :]
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I agree it is good to stick to the B&N charger with B&N cable for best fast charging. The only reason not to is to reduce the number of chargers one is carrying or to provide alternatives like charging in a car.
I was pointing out that the issue is primarily around the chargers not around the cable. Your original question was about charging from a PC USB port and that is safe no matter what cable you use.
The case where the cable might make a difference is where a non B&N charger has the data lines shorted and will allow AC charging mode but is OK with < 1000mA (non B&N cable) but could blow up if it tries to deliver 2000mA (B&N cable). So, it is less risky if you use a non B&N cable when using a non B&N charger. Still a poor charger design if that is the case.
I purchased z1 recently came with magnetic charging dock. I cannot get the charging dock to work.
I plugged USB into pc and the phone in the dock, the pin on the phone should be matched into the dock, but I don't see the phone show charging. is there any settings on the phone need to be enable for this ? or is the dock not working?
citrix80 said:
I purchased z1 recently came with magnetic charging dock. I cannot get the charging dock to work.
I plugged USB into pc and the phone in the dock, the pin on the phone should be matched into the dock, but I don't see the phone show charging. is there any settings on the phone need to be enable for this ? or is the dock not working?
Click to expand...
Click to collapse
Plug it into the wall charger
gregbradley said:
Plug it into the wall charger
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Click to collapse
oh. ok, now it shows charging on the screen now. thanks.
So, I have the official Sony DK48 dock for my Z3 Compact (no case). The phone will recognize that it is connected to the dock by giving the notification sound, but the battery will not charge while on it. I've tried wiggling it all sorts of different ways, and tried at least 3 different USB cables, but still no dice.
Is anyone else having this issue?
Have you used original cable? I had this problem with some poor quality cables, they were too thin inside for the designed current
plug it in the mains...
techguyone said:
plug it in the mains...
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With 'mains' you can mean so many things.
I guess you mean plug the cable in an electrical outlet, rather then in a computer. I believe that I had the same issue. (Worked fine in an outlet)
The DK48 will only charge the phone when power comes from the mains. It does not charge the phone when connected to a USB port of a PC or laptop.
Use the original charger and the original cable that came with your phone and the Z3/Z3C should charge just fine in the DK48; that's at least what my does.
Yes all of my attempts occurred while plugging the dock into the AC adapter that came with the phone.
I guess then it seems like its a faulty DK48...
It should work with the original cable, adapter and electric outlet (not a PC).
Why wouldn't the DK48 charge through PC? How does it know? Amperes?
The input from the computer is too low even when you plug the USB to 3.0 port... Unfortunately you MUST use wall charger for the DK48 to be working.
Lazer72 said:
Why wouldn't the DK48 charge through PC? How does it know? Amperes?
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I am a bit late in this thread, but I will post it anyway in case somebody has the same problem. Dk48 won't charge phone while connected to PC, because it checks if data lanes in Micro USB port are used. If they are, charging is stopped. If someone wants to charge phone using dock connected to PC (I for example connect it to my active USB hub, which is connected to my PC) it is necessary to use Micro USB cable, which doesn't use data lanes, just charging ones.
I hope it will help somebody.
i've been looking high and low for a retractable usb cable that support quick charge for the galaxy s6 edge. i travel a lot and a retractable cable will help reducing the mess in my backpack .. thank
http://www.aliexpress.com try them
dinopeyton said:
http://www.aliexpress.com try them
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nothing there. thanks for the reply though
the guitarist said:
nothing there. thanks for the reply though
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From Qualcomm FAQ...
Q6: Does it matter what type of charging cable is used with a Quick Charge adapter?
A: Quick Charge is designed to be connector-independent. Quick Charge can be implemented with a variety of formats, including USB Type-A, USB micro, USB Type-C, and other proprietary connectors.
Quick Charge high-voltage operation is designed to minimize charging issues associated with long or thin cables, allowing for a superior charging experience, independent of cable type.
So i believe you only need a standard retractable cable. Perhaps something like...
https://www.amazon.co.uk/Imustech®-...-1-catcorr&keywords=retractable+s6+edge+cable
Mobzter said:
From Qualcomm FAQ...
Q6: Does it matter what type of charging cable is used with a Quick Charge adapter?
A: Quick Charge is designed to be connector-independent. Quick Charge can be implemented with a variety of formats, including USB Type-A, USB micro, USB Type-C, and other proprietary connectors.
Quick Charge high-voltage operation is designed to minimize charging issues associated with long or thin cables, allowing for a superior charging experience, independent of cable type.
So i believe you only need a standard retractable cable. Perhaps something like...
https://www.amazon.co.uk/Imustech®-...-1-catcorr&keywords=retractable+s6+edge+cable
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Click to collapse
I have a quick charge charger in my car with 2 ports. One has a standard USB cable, the other has a retractable cable. Both cables charge but only the standard straight one allows my phone to fast charge. I also noticed that the retractable one gets warm to the touch when charging.
sdotagain said:
I have a quick charge charger in my car with 2 ports. One has a standard USB cable, the other has a retractable cable. Both cables charge but only the standard straight one allows my phone to fast charge. I also noticed that the retractable one gets warm to the touch when charging.
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Click to collapse
cable sounds dodgy. anyway how about this one then
http://www.dracodesign.com/usb-2-1a-fast-charge-and-data-sync-retractable-cable-white/ ?
Mobzter said:
From Qualcomm FAQ...
So i believe you only need a standard retractable cable. Perhaps something like...
https://www.amazon.co.uk/Imustech®-...-1-catcorr&keywords=retractable+s6+edge+cable
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Click to collapse
This is incorrect. The cable also needs to support Quick Charge. I've yet to find any retractable cables that do support it. I think this is because the conductor needs to be thin in order to retract.
Are the contacts under the battery, which are part of the wireless charger ribbon cable mandatory?
I just broke that cable and I'm not sure if will it still boot and charge by usb? or it won't work at all without that part?
Exelios said:
Are the contacts under the battery, which are part of the wireless charger ribbon cable mandatory?
I just broke that cable and I'm not sure if will it still boot and charge by usb? or it won't work at all without that part?
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Click to collapse
When only the connection with the coil for wireless charge is broken, you probably can charge the battery.
Try it before closing the device.