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I'm looking for an extra charger for my nc. What I need to know is what is the mah output of the stock changer so I can get one that had the same rating. Our can someone link me to a cheap stock charger.
The output is 5volts / 1.9 Amperes.
Edit, it is written on the charger btw, you could probably have checked that your self .
Where can I get a charger with the same specs? I don't want to spend $20 but if I have to I will just buy another stock one.
I have a 5v 700mah charger that I bought for my phone. Will that work or is the rating to low?
That will work, it just wont charge as fast...
Sent from my NookColor using XDA app
FYI: I tried using my HTC usb charger with the nook usb cable and it will not charge. The charging light flickers.
Thats what I'm worried about
There is this cable from boxwave with a dongle off the end that you are supposed to use to charge from USB chargers. Why would anyone need this?
http://www.boxwave.com/products/dir...arge-cable-barnes-_-noble-nook-color_4101.htm
Mike
nrune said:
There is this cable from boxwave with a dongle off the end that you are supposed to use to charge from USB chargers. Why would anyone need this?
http://www.boxwave.com/products/dir...arge-cable-barnes-_-noble-nook-color_4101.htm
Mike
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It looks like one end is for transferring data only and the other is for charging only
I just tried the charger I have that works with my phone and it wont charge my NC. When I plug it in nothing happens it doesn't even recognize its plugged in
boxwave.com/products/wallcharger-direct/barnes-_-noble-nook-color-wall-charger-direct_4101.htm
That looks like it will do the job perfectly and is only $13
xxosynrgoxx said:
FYI: I tried using my HTC usb charger with the nook usb cable and it will not charge. The charging light flickers.
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Click to collapse
It is charging, just not as fast and the device doesn't notify you of it. HTC usb wall plug chargers are usually 5volts and 1amp, the nook requires 1.9 amps to charge properly.
/mr
There are no spec listed for that charger so it could be a 700mah or it could be a 1.9a charger.
How many of you guys recommending underpowered chargers actually have any electronics background?
The nook charges when connected to a usb socket on a computer, which provides 500ma as a high power device. So your 1000ma charger is twice as good as using a computer.
In order to get 1900 ma, the nook isn't using stock usb stuff in the charger... but normal usb works just fine because, well, the standard requires it to...
4000 mAh battery should charge fully in 2 hours on the nook charger, 4 hours on the htc charger, or 8 hours on a computer...
Sent from my NookColor using XDA app
Good to note that there's a bug on the NC that makes it appear that it's not charging, when connected via USB connection, but it really does charge.
regular micro usb chargers from cell phones will charge the nook even when it says it's not charging.
Novarider said:
I just tried the charger I have that works with my phone and it wont charge my NC. When I plug it in nothing happens it doesn't even recognize its plugged in
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Click to collapse
The NC will charge from my Droid's power adaptor even though it does not show it to be working. It will take a lot longer to charge with a standard 0.5A USB power adaptor.
In theory, it should take about 4 times as long to charge from standard USB instead of the B&N charger.
Novarider said:
I just tried the charger I have that works with my phone and it wont charge my NC. When I plug it in nothing happens it doesn't even recognize its plugged in
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Click to collapse
It does work. It's just charging slow so you can't necessarily tell. Also. There will be no indicators on the nook to show that it is charging but i'm pretty sure it is. Leave it plugged in overnight and see.
2A rated USB adapter for under $10: http://www.madvapes.com/2-amp-AC-to-USB-Adapter-ideal-for-Passthroughs_p_2357.html
I own one and can confirm it works perfectly.
So this is my first motorola and I had heard of the issues they have with non motorola chargers. Now I am experiencing it first hand. With the same ac charger I have charged many phones with and is capable of 1 amp output (D4 charger is only rated at 850 mA) my D4 struggles. With the device off it charged painfully slowly. While on it cannot even charge. It discharges while plugged in despite the charging indicator and reporting "charging (AC)" in status.
How does it know it is not a moto charger? Is it just about the resistance between the data pins? For most other phones shorting the data pins on the charger indicates to the phone that it is a high current charger and not a computer USB port. Is there a similar trick for motorola phones? I would rather not have to purchase an overpriced moto oem car charger. I have a perfectly fine 1.2 amp car charger soldered directly into my car's 12v system behind the dash. Can I make it work?
Thanks!
On a regular basis I successfully charge my D4 using both a charger from a Samsung Reality feature phone and from a B&N Nook Simple Touch, in addition to the one that came with it. I've also used a variety of car chargers.
Sent from my DROID4 using XDA
Actually, so far I have only one charger that had any trouble charging the phone (it was a $3 charger with 2 USB ports), but the $3 charger with ONE USB port works fine, as does the Nook Color charger, Blackberry charger, and Samsung charger I have tried it with, as well as both my old car charger and Lenovo's always-on charging port on their laptops.
JKingDev said:
So this is my first motorola and I had heard of the issues they have with non motorola chargers. Now I am experiencing it first hand. With the same ac charger I have charged many phones with and is capable of 1 amp output (D4 charger is only rated at 850 mA) my D4 struggles. With the device off it charged painfully slowly. While on it cannot even charge. It discharges while plugged in despite the charging indicator and reporting "charging (AC)" in status.
How does it know it is not a moto charger? Is it just about the resistance between the data pins? For most other phones shorting the data pins on the charger indicates to the phone that it is a high current charger and not a computer USB port. Is there a similar trick for motorola phones? I would rather not have to purchase an overpriced moto oem car charger. I have a perfectly fine 1.2 amp car charger soldered directly into my car's 12v system behind the dash. Can I make it work?
Thanks!
Click to expand...
Click to collapse
Not sure how it knows one way or the other. I've successfully used a few LG chargers to charge my D4. The only really hickup I've ran into is the usb cables from those lg chargers won't sync data to the phones when plugged into a computer, they'll still charge off the usb port but won't read as a usb connection to the computer.
Heh, captcha is trynply.
Every charger I've used, including an old charger for an EN-V, kindle, supplied, and various other phone chargers works just fine with this phone. Probably have a bad charger, guy.
Thanks for the replies. I guess I was wrong. My modded car charger works just fine. I guess its just time to retire the old charger that I have been using. I think it might be my old nexus one charger.
A more important question would be does the thing charge over computer-bound USB ports?
When you're without a charger, but there's a USB cable that fits your phone, sometimes a regular USB data port is the only that is around... even though it might take a really long time.
Try a computer bound USB port, then try your actual charger, again. Or do the hard reset (vol down plus power, hold until it actually does it), which is just like pulling the battery.
See how that goes.
Chris
RueTheDayTrebek said:
A more important question would be does the thing charge over computer-bound USB ports?
When you're without a charger, but there's a USB cable that fits your phone, sometimes a regular USB data port is the only that is around... even though it might take a really long time.
Try a computer bound USB port, then try your actual charger, again. Or do the hard reset (vol down plus power, hold until it actually does it), which is just like pulling the battery.
See how that goes.
Chris
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Click to collapse
It does in fact charge via USB port. In fact, it has a 'charge only' mode. Depending on how much juice your port puts out, and what you are doing with the phone, it will charge slowly/not at all, though.
from my experiences, the droid 4 will not accept lg microusb cables, the charging bricks work tho. i use a blackberry microusb on mine along with a Logitech and the stock moto ones. 1.2 amps is a bit high but not crazy sounding. personally, I charge at 1 amp.
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?
Click to expand...
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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Click to collapse
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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Click to collapse
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.
Click to expand...
Click to collapse
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.
Been looking for a fast car charger as well as a second ac charger.
I do have questions about usb cables though.
Which is responsible for shorting out the data pins...the charger, or the cable?
Also, while experimenting with my stock charger, I noticed a couple.of things...
I have an old 9ft cable I had along time ago, as well as a 6ft usb3 extension cable.
Using the stock charger
With 9ft cable, I get 13% per hour
With usb3 ext + stock cable, I get 25% per hour
With just the stock cable, I get 35% per hour.
(These are all according to battery monitor widget)
Should I be looking for a specific type of cable as well? I would really like a long cable so even if I bought a second oem charger, I would like to buy a non stock cable.
swyped all these spelling errors from my galaxy note 2
finalhit said:
Been looking for a fast car charger as well as a second ac charger.
I do have questions about usb cables though.
Which is responsible for shorting out the data pins...the charger, or the cable?
Also, while experimenting with my stock charger, I noticed a couple.of things...
I have an old 9ft cable I had along time ago, as well as a 6ft usb3 extension cable.
Using the stock charger
With 9ft cable, I get 13% per hour
With usb3 ext + stock cable, I get 25% per hour
With just the stock cable, I get 35% per hour.
(These are all according to battery monitor widget)
Should I be looking for a specific type of cable as well? I would really like a long cable so even if I bought a second oem charger, I would like to buy a non stock cable.
swyped all these spelling errors from my galaxy note 2
Click to expand...
Click to collapse
You're probably referring to the charge-only usb cables with the data pins shorted out - it is the cable which has the data wires shorted out; the wall charger only uses 2 out of the 4 usb wires, so there's no need to have anything shorted out on the charger side.
It's useful to share what you have noticed, but the general idea is that the longer the usb cable, the more it would take to charge because the extra resistance along the cable which is created; in a similar way you lose current if you use any extenders, passive usb hubs etc - how much? it really depends on what you pick, you can have it calculated / measured. A higher gauge usb cable would give you faster charge times, so pick a quality cable, even if it's a non-OEM and you'll get similar results to the original cable.
tbukkos said:
You're probably referring to the charge-only usb cables with the data pins shorted out - it is the cable which has the data wires shorted out; the wall charger only uses 2 out of the 4 usb wires, so there's no need to have anything shorted out on the charger side.
It's useful to share what you have noticed, but the general idea is that the longer the usb cable, the more it would take to charge because the extra resistance along the cable which is created; in a similar way you lose current if you use any extenders, passive usb hubs etc - how much? it really depends on what you pick, you can have it calculated / measured. A higher gauge usb cable would give you faster charge times, so pick a quality cable, even if it's a non-OEM and you'll get similar results to the original cable.
Click to expand...
Click to collapse
but the OEM cable can also be used for data transfers, surely, it's data pins are not shorted out?
it is the charger that normally has data pins shorted, and I have modified a few chargers to achieve this.
In the OSmonitor app the is a misc tab that shows if you are charging from AC or USB, there must be a way of finding the charging current, on one of my old phones it was displayed in dmesg.
Dont forget that the % per hour will vary according to how full the battery is, slowing down as it gets more full.
I'm trying to make a fast charging cable for use in the car. The current charger I use seems to work fine, but the coiled cable annoys me. When I use a standard USB cable the charging reverts to slow mode which means the GPS and screen drain the battery faster than the cable can charge it.
The charging cable that works has a resistor between ground and the unused pin 4, but what I want to know, is this the only USB charging standard that the Droid4 supports, for example does it support the one where you put a resistor between the two data pins, or the one where you just join the data pins together?
If it supports either of those, then this project just got a lot easier as I can just chop the Type A connector off my USB cable and do all the work without having to solder a Micro USB connector.
Could you de-solder the coiled cord and solder in a micro USB cord or even a female USB cord for removal of OEM usb... or is that what you mean in the last paragraph... If you want I could give it a try as I have three rapid car chargers and several USB cables...
Lum_UK said:
I'm trying to make a fast charging cable for use in the car. The current charger I use seems to work fine, but the coiled cable annoys me. When I use a standard USB cable the charging reverts to slow mode which means the GPS and screen drain the battery faster than the cable can charge it.
The charging cable that works has a resistor between ground and the unused pin 4, but what I want to know, is this the only USB charging standard that the Droid4 supports, for example does it support the one where you put a resistor between the two data pins, or the one where you just join the data pins together?
If it supports either of those, then this project just got a lot easier as I can just chop the Type A connector off my USB cable and do all the work without having to solder a Micro USB connector.
Click to expand...
Click to collapse
I'm not sure if this has anything to do with your question but try an ipad or tablet charger (2.1 Amp) which i use on my droid 4 and charges it fast.
Regular chargers use 0.7 to 1.0 Amp. I know tablet chargers are bulky but they tend to charge your device faster.
Also maybe this thread will work for you: http://forum.xda-developers.com/showthread.php?t=1984838
I'm using a 2amp car charger with a USB socket at the moment and I assure you it isn't charging at that speed. The other charger with the coiled cord does charge at the higher speed, but it also has the odd wiring.
That thread is interesting, is exactly the kind of thing I was talking about, but I'm looking for confirmation that it will actually work with the Droid 4 before I start hacking up cables. The Droid 4 seems to be fussy about which chargers it will work with, my 2amp charger worked fine with the HTC Desire Z, for example.
Another part of my reason for doing this is I want to use the right-angled USB plug that is on my USB lead, but that Micro USB connector is sealed and unmodifiable.
Lum_UK said:
I'm using a 2amp car charger with a USB socket at the moment and I assure you it isn't charging at that speed. The other charger with the coiled cord does charge at the higher speed, but it also has the odd wiring.
That thread is interesting, is exactly the kind of thing I was talking about, but I'm looking for confirmation that it will actually work with the Droid 4 before I start hacking up cables. The Droid 4 seems to be fussy about which chargers it will work with, my 2amp charger worked fine with the HTC Desire Z, for example.
Another part of my reason for doing this is I want to use the right-angled USB plug that is on my USB lead, but that Micro USB connector is sealed and unmodifiable.
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Click to collapse
I'm not sure but there is a radio called ihome ic50 (Google it) i own it and it has a special switch which the manual says if the device has a proprietary charging protocol flip the switch. I made a quick test and it charges in both ways. I'm pretty sure your idea will work as long you know what you are doing. BTW the ihome ic50 is pretty cool for any android device.