Related
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
Click to expand...
Click to collapse
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.
Click to expand...
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
Click to expand...
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
Click to expand...
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.
Hi,
I bought the nook but live in France. Can i charge my nook with my HTC Desire power supply and cable? The nook usb cable doesnt seems to be "only usb".
Thank you.
You can probably use a standard USB power inverter and generic cable. If it's safe for your Desire, it's almost definitely safe for the NC. However, some cables might randomly not work.
A standard micro-USB and charger will work, but it is slower than the Nook charger. I routinely charge from a powered USB hub at the office.
-- Tom Jupille
Ok thank you!
Hi I am also from Europe and I checked that Nook Color have a multi 220/110 voltage charger
www [dot] goo [dot] gl [slash] JYfSX
You need only plug adapter
Yeah, that what i use for now. As i have my htc power supply alway connected to my wall i wan't to put the NC us power in his box.
I tried one of those cigarette light -> USB adapters for charging the nook in my car. When I plug it in, it wakes up. But it's not charging. Anyone have any idea? I'm using the Nook cable, btw.
Az
azbarber said:
I tried one of those cigarette light -> USB adapters for charging the nook in my car. When I plug it in, it wakes up. But it's not charging. Anyone have any idea? I'm using the Nook cable, btw.
Az
Click to expand...
Click to collapse
It's charging, just slowly. Charging from a standard 500mA USB jack doesn't cause the "Charging" indication to appear in most battery monitors on the NC, but if you leave it there for a while with the screen off and not doing anything you should see the battery percentage go up a bit. It takes about 8 hours for a full charge via USB. It's enough power to either run the NC if you're actively using it OR to charge the battery, not both at once.
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.
Click to expand...
Click to collapse
So using a regular micro usb cable will allow safe charging?
Locklear308 said:
So using a regular micro usb cable will allow safe charging?
Click to expand...
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.
Click to expand...
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.
Click to expand...
Click to collapse
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 :]
Click to expand...
Click to collapse
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.
So I left my NC wall charger and cable in my hotel room in South Korea last weekend, and of course I am back home in TX with no way to charge besides normal microUSB, which takes forever.
Is there any source other than B&N for a high-speed (high current) charger and cable? The B&N one is like $25, which is not too bad, but I still would rather find an alternative if possible.
What you're looking for on the charger is something that's rated at 1.9A or better. Most made for the ipad are 2A. The only alternative I've made use of is a Belkin one they sell at Wallyworld for $20 bucks, (same type deal as you but I still had the cable and was still on the road). With the stock cable I get a full charge in about three hours and with a regular cable I get a full charge overnight. If I had to do it over I might have pushed my schedule a little harder and looked for a B&N so I would have ended up with a "spare" cable out of the deal.
mr72 said:
So I left my NC wall charger and cable in my hotel room in South Korea last weekend, and of course I am back home in TX with no way to charge besides normal microUSB, which takes forever.
Is there any source other than B&N for a high-speed (high current) charger and cable? The B&N one is like $25, which is not too bad, but I still would rather find an alternative if possible.
Click to expand...
Click to collapse
Bummer! I travel to S. Korea regularly in Jan/Feb and in early Aug. Team development programs with Samsung at their Cheonan S1 Training Center. Where do you travel to in S. Korea?
Where as finding an adequate charger seems easy enough, its the cable that's the problem. Has to be an official B&N cable for fast charging. A standard microUSB will charge very slowly. I've yet to find an aftermarket equivalent.
Has anyone checked out a touchpad charger? It looks like it's just a standard micro usb charge that puts out 2A. It seemed to charge my nook reasonably fast but I didn't let it get above 95% since I wasn't sure if it would hurt the battery. I'll have to do a better test to see how long it takes to charge
bitnerd said:
Has anyone checked out a touchpad charger? It looks like it's just a standard micro usb charge that puts out 2A. It seemed to charge my nook reasonably fast but I didn't let it get above 95% since I wasn't sure if it would hurt the battery. I'll have to do a better test to see how long it takes to charge
Click to expand...
Click to collapse
Here are the results of a very quick test that I just performed:
Nook Color running Mirage CM7 latest version (5/18)
Overclocked to 1100Mhz and interactiveX governer
Screen at 100% brightness
Battery Monitor Widget main graph screen displayed entire time
Logging set for every 60 seconds
Test lasted about 5min for each combination
Battery at about 70%
Nook charger & cable
- average reading of +892mA
- mV increased 3844mV to 4053mV
Touchpad cable & charger
- average reading of -335mA
- mV increased 3847mV to 3901mV
Touchpad cable & Nook charger
- average reading of -407mA
- mV increased 3847mV to 3888mV
Nook cable & Touchpad charger
- average reading of +1211mA
- mV increased 3826mV to 4081mV
So it looks like the Nook cable is the key. As long as you have a charger that puts out around 2 amps or so and the Nook cable, the Nook will fast charge. It actually charged faster on the HP charger (2.0A output vs 1.9A for the Nook charger).
I also tried a cheap data cable I had and it stated "USB charging" and the results were similar to using the HP cable but a bit lower on the mA readings.
I plan to run the test again using a high Amp car charger but I think the results will be pretty much the same.
The best combination for a super fast charge is the HP Touchpad wall charger and the Nook cable
Just call B&N, talk nice. They will either give you a new set, or set you up with an order. They gave one to me, 2 day ship too...
My cable broke last weekend. I went to a BN store, and they sell the cable without the charger for $15.
Sent from my NookColor using Tapatalk 2
I don't know about the fast charger, but the charger for a samsung cell phone (not a smart phone just a normal phone) phone will charge the nook. I've accidentally plugged it in and it worked. I've not used it for extended periods so can't speak to its long term ability to work.
joelgrice said:
[...] So it looks like the Nook cable is the key. As long as you have a charger that puts out around 2 amps or so and the Nook cable, the Nook will fast charge. It actually charged faster on the HP charger (2.0A output vs 1.9A for the Nook charger).
Click to expand...
Click to collapse
I've noticed that my NT on B&N firmware 1.4 will charge on a non-B&N charger, but that the charging status shown in settings always says "not charging". My NC on CM7.2 simply indicates it's charging. I don't know if the B&N status really matters or not, but it is finicky about the wall adapter. If/when you re-test, could you please note the battery status?
Meanwhile, I did some testing with a PowerGen 12v adapter. I was able to get the NT showing "charging (AC)" while using the 1A plug on the adapter with the B&N cable. Reading the little booklet that comes with it indicates that "some devices" can pull more than 1A off this plug, including the "HP touchpad, Kindle Fire". While charging, I did get the erratic screen issue while plugged in. With the B&N charger, the same cable didn't cause this behavior on the NT. Not sure what that means, but you basically can't use it while it charges with the adapter. The 2A plug, described as "for the iPad" shows "not charging" (but not discharging). Using a generic microUSB cable also yields "not charging".
I also tested a EZOPower 7800 mAh supplemental battery. I was able to get a NT showing "charging (AC)" while using the "S" plug, described as compatible with the Samsung P1000 (Galaxy Tab) with the B&N cable. The "I" (iPad) plug did not work. The battery itself does charge off any 1A USB source, and will charge external devices at full 2.1A power as it charges. This means you should be able to let this battery power your NC, while the EZOPower battery charges more slowly from a normal 1A USB 12 VDC or AC adapter. Once the NT is fully charged at full rate, the EZOPower battery will itself charge. There were no screen issues with this combination, and I could use the device as it charged (with the usual cautions about the fragile B&N cable, of course.)
I don't know if the distinction between "not charging" and "charging (AC)" actually means anything, but the B&N firmware seems to care, while CM doesn't.
The reason why people notice they need a stock NC cable to 'fast charge' is that While it appears at first glance to be a standard microUSB plug.... it is not. Go ahead, try and plug it into your cell phone (no, it wont hurt your phone). The NC 'microUSB' plug actually has many more pins than the standard 5 (Something up near 20 as I recall). There are the normal 5 upfront, then the rest as further back. When you plug it in to charge, one of the rear pins connects and can supply the 1.9A max charge current. That 1.9A pin is directly connected to the Power Mgmt chip and is the only way to get high current charge.
The <explicitvie delted) whole story
There are three pieces to this puzzle.
1) a high power 2amp / 2000ma USB charger
2) shorting the correct pins in the cable to let the device know it is connected to a high power charger
3) extra long 12 ping next gen micro usb cable.
Some details...
Not all 1.9 / 2amp chargers are actually 2 amps
Some are 2 x 1amp
Some are mis-represented
etc.
I have tried many...
Some are frauds
Some are designed by idiots.
Few actually work
Yes, this is a Ipad spec.
Shorting the data pins (2 to 3) is required.
Go on eBay and look up pwr+ usb filter.
This little USB type a male to female adapter
does just that
shorts the data pins
finally the cable...
There is a new type of micro USB 12 pin connector on the cable.
The other big side is standard 4 pin.
The micro connector is longer than a standard micro USB.
The are some overseas import cables that work.
A standard USB cable WILL NOT WORK.
PS:
using a standard charger and cable will work but takes 4x longer.
Charging while on will run the battery down.
Pretty much stay with genuine OEM parts.
Especially the cable.
Unless you are tech savvy.
Google 12 pin USB
You can source a good 2amp power supply.
You can use OEM Ipad chargers.
HP makes a good 2A charger. PN 157-10157
12V - Scosche big black 4" long job 2 port 2.1a + 1a
However you must short the data pins with the pwr+!
mail at lofthouse dot org
We have a number of phones and a Nook HD . The nook will not charge from our multiple car chargers. Does the nook only charge from a nook car charger?
DrDiff said:
We have a number of phones and a Nook HD . The nook will not charge from our multiple car chargers. Does the nook only charge from a nook car charger?
Click to expand...
Click to collapse
To my knowledge the answer is yes. It uses a special 30 pin adapter that has been changed from the normal iPod adapter. It then also needs more juice then a normal USB device.
I would think that if you used the Nook HD cable and a usb 12v adapter that puts out more juice then normal then it should work though I don't know the exact voltage and amperage it needs to charge.
The AC adapter delivers 2 amps so I would think the car charger would have to give the same thing.
Mine charges in a normal car charger, but very slowly. My car charger ifs capable of 2a split between two ports, still nook charges very slowly.
Sent from my Barnes & Noble Nook HD+ using xda app-developers app
i have been able t charge my nook hd in my car, i use the usb/outlet charger that costco gives you when you buy a phone from them
I have two 2.1a car chargers. Not one works. I have a 2.1a home charger that doesn't work, and I have a big battery pack with a 2.1a outlet that doesn't charge it. Annoying as hell.
dbpaddler said:
I have two 2.1a car chargers. Not one works. I have a 2.1a home charger that doesn't work, and I have a big battery pack with a 2.1a outlet that doesn't charge it. Annoying as hell.
Click to expand...
Click to collapse
The issue is the voltage that the stock charger puts on the d+ d- pins (data, the two inner pins that are used in standard USB connections to transmit data). It don't know what that voltage is, but the device needs to see that to validate that you are using a valid charging block before it allows it to charge.
I cannot even get my Nook Color charging block to work.
Sent from my Nook HD+ running CM10.1 on emmc.
Talk about inconvenient. So my 5000mah battery pack is pretty much a hockey puck for long distance travel. Kind of glad I didn't sell my galaxy tab yet. I just don't understand why companies make it difficult to charge their products. I mean I do, but there's no way I'm dropping another $20 on their car charger. Kinda defeats the purpose of buying it at $200 if I have to invest in all new charging gear.
DrDiff said:
We have a number of phones and a Nook HD . The nook will not charge from our multiple car chargers. Does the nook only charge from a nook car charger?
Click to expand...
Click to collapse
Just got my HD+ yesterday, upgraded to v2.1, went to B&N and bought the B&N auto setup, tried a Sprint 12v/110v adapter and it charged from 89% to 95 in 15 min, at idle though. If using the HD+ don't know if it would supply enough power.
Jim
dbpaddler said:
I have two 2.1a car chargers. Not one works. I have a 2.1a home charger that doesn't work, and I have a big battery pack with a 2.1a outlet that doesn't charge it. Annoying as hell.
Click to expand...
Click to collapse
I bought a UNU ENERPACK VAULT 11000MAH Battery Pack on special and having read about yours, I thought I would try it.
Mine has dual USB outputs--a 1A and a 2.1A. I plugged in the Nook HD+ USB cable into the 2.1A output. Nothing. The charging light comes on green, but battery status show "discharging". For grins and giggles, I tried the 1A jack and IT WORKED! The charging LED is orange, and the battery status show "charging".
How odd that the 2.1A jack does nothing, but the 1A jack works. Someone needs to figure this out! Like it was said above, it shouldn't be so difficult to charge your device. USB charging is meant to be universal. If you're going to design a product that works differently than everything else, at least make it cool, like inductive charging or something!
lancorp said:
How odd that the 2.1A jack does nothing, but the 1A jack works. Someone needs to figure this out!
Click to expand...
Click to collapse
It has to do with the status of the two inner data pins in the charger. Some chargers either have the pins shorted or have a voltage between them. The HD/HD+ can detect that and set charging accordingly.
Sent from my Nook HD+ running CM10.1 on emmc.
leapinlar said:
It has to do with the status of the two inner data pins in the charger. Some chargers either have the pins shorted or have a voltage between them. The HD/HD+ can detect that and set charging accordingly.
Click to expand...
Click to collapse
Same situation here. The HD+ will charge from some, but not all, of my bricks with USB ports. Works on on my Nook ereader block and my Nexus 7 block, not with some others. And same thing with my 11000ma battery: won't charge from the 2A port but works fine from the 1A port. I think I read once that that has something to do with the way the iPhone charges.
To charge the Nook HD you must use power adapter with 5V and more than 1A (1000mA) of power. The original charger marked as 5V 2A.
In my experience - I've charged Nook HD with 5V 850mA adapter (from Kindle Keyboard), slowly, but surely.
So, proper and stable, branded power adapter will do the job.
5Volts, 1A (1000mA) minimum, but 2A is much better.
HD+ doesn't charge when it's off???
Hey guys,
I tried charging my Nook this morning with the power off because my phone charges much faster this way. But I noticed that the little orange charging light wasn't on and it didn't seem to charge at all. I got to work and plugged the cable into the USB port of my computer and same thing. But when I turn the Nook on it seems to charge fine.
Does the HD+ really have to be powered on to charge or do I have some other issue?
Thanks,
Darien
darien87 said:
Hey guys,
I tried charging my Nook this morning with the power off because my phone charges much faster this way. But I noticed that the little orange charging light wasn't on and it didn't seem to charge at all. I got to work and plugged the cable into the USB port of my computer and same thing. But when I turn the Nook on it seems to charge fine.
Does the HD+ really have to be powered on to charge or do I have some other issue?
Thanks,
Darien
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When you say power off, you mean sleeping or completely off?
Sent from my Nook HD+ running CM10.1 on emmc.
leapinlar said:
When you say power off, you mean sleeping or completely off?
Sent from my Nook HD+ running CM10.1 on emmc.
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Completely off. It charges in sleep mode fine.
darien87 said:
Completely off. It charges in sleep mode fine.
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Click to collapse
Yes, has to be on.
Sent from my Nook HD+ running CM10.1 on emmc.
leapinlar said:
Yes, has to be on.
Sent from my Nook HD+ running CM10.1 on emmc.
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Thanks Leap. Wonder why they changed that? My Nook Color charges when it's off.
So has anyone found any good choices for a car adapter..I tried one from Monoprice and it doesn't seem to work.
I just want one that can charge two devices at once.
2 Port USB Car Charger 4.2A - Black Prodcut ID:10239 found @ Monoprice.com
As our mobile devices have increased in capability, their battery and charging needs have also increased. Now you can have up to 4.2 amps of charging power in your car with this 2-Port 4.2A USB Car Charger from Monoprice!
This car charger fits into the auxiliary/cigarette lighter socket in your vehicle. It provides two 5 VDC USB charging ports, both with up to 2.1A of charging power. That is enough power to sufficiently charge two Apple iPads® at once!
Solution
ase1972 said:
So has anyone found any good choices for a car adapter..I tried one from Monoprice and it doesn't seem to work.
I just want one that can charge two devices at once.
2 Port USB Car Charger 4.2A - Black Prodcut ID:10239 found @ Monoprice.com
As our mobile devices have increased in capability, their battery and charging needs have also increased. Now you can have up to 4.2 amps of charging power in your car with this 2-Port 4.2A USB Car Charger from Monoprice!
This car charger fits into the auxiliary/cigarette lighter socket in your vehicle. It provides two 5 VDC USB charging ports, both with up to 2.1A of charging power. That is enough power to sufficiently charge two Apple iPads® at once!
Click to expand...
Click to collapse
I checked voltages on D+ and D- (inner) contacts of Nook's power supply.
Inner contacts are isolated and connected together.
So, any voltage applied to these contact from Apple-fitted adapter with voltage-encoded maximum current ability, will affect operation.
My suggestion is to isolate and shorten inner contacts of one of USB ports of car charger. Apple devices will recognize it as ordinary 0.5A capable USB port, while Nook will be charged at full speed.
I did a short extender cable and it works with iPad and car chargers:good:
I have one that works with my Nexus 7 (2012), which was also notoriously difficult to charge :
http://www.amazon.com/PowerGen-charger-Designed-Android-Devices/dp/B0088U6OZY
But it does not seem to work with my Nook HD+ : the charging light turns green, but the battery icon in the status bar doesn't change to indicate charging. I'm running CM 10.2 (9/24 nightly) with the trim-enabled kernel (sandisk emmc).