05-06-2013 09:08 PM
I use two external batteries to keep all my USB-powered gear charged up when I'm on the road: IOGear GearPower 6600 and the Zagg Sparq Silver. I had no problems charging my NST, NC or NT with any of my batteries (I can't be sure they charged at 2.1 A but they DID charge) but my brand new HD+ doesn't seem to recognize the batteries for charging -- the charge LED shows green instead of orange and the HD+ battery doesn't seem to go up.
Anyone else working with external batteries and the HD+? Is this just an error in HD+'s software or is it really not charging off anything but the AC adapter?
05-12-2013 01:01 AM
I really do not get why they made it so finicky. You'd think for a company that is playing from behind the 8 ball, they'd make this thing as user friendly as possible.
Someone mentioned it's looking for a specific voltage, and if it doesn't sense it, it doesn't charge. I have a Rocketfish charger made for the Kindle Fire and it charges the HD+ just fine. Scosche and Anker make decent 3rd party chargers. It's frustrating to see them not do the job with the HD+.
07-12-2013 08:11 PM - edited 07-12-2013 08:15 PM
I just bought a Nook HD+ and I've been wondering about external batteries. I did a lot of research, and it seemed that the only company making external batteries which mentions any Nook products is Anker, specifically the Astro3E. Based on Crog's comments, I had my doubts, but I contacted Anker by email and they responded quickly, assuring me that if I bought that model battery and it didn't charge my HD+ they'd send me a return label for a full refund.
I got the battery today, charged it up, and then ran it to my HD+ using the Nook cable. It worked! the HD+'s charging light came on amber, and the lock screen read "charging, 60%" (an accurate reading based on the battery indicator). The Astro3E charged my HD+ up to full within 1 to 2 hours and still had close to 75% of its charge remaining.
I should note that the Anker battery did not come with a charger. However, Anker says their battery is compatible with any USB wall charger putting out 5 volts and at least 1.5 amps. I used the Nook wall charger for the Anker battery, and it worked like a charm.
Here's a link for Amazon's listing: http://www.amazon.com/10000mAh-Lightning-Thunderbo
Standard Disclaimer: I don't work for Anker, I don't know anyone who does, and I have no financial interest in the company.
07-13-2013 07:53 AM
That looks like it could be a very useful gadget. Would you update again in a week or two and let us know if still working (or not.) Thanks!
07-22-2013 02:11 PM - edited 07-22-2013 02:12 PM
Chris-OC I am interested to find out what you think, as well. I have several other Anker external batteries, and think their quality is great. Don't have the one you mentioned, though, and was bummed I couldn't use my current ones for my Nook. I hope you can let us know how this model is working for you,
I couldn't get my HD to charge off my uNu Enerpak, either, so I dug into it a little. After experimentation I found that the Nook HD expects the USB Data+ and Data- wires to be cross-connected or it won't accept the charger even though the voltage is correct. (That's when you get the green light.) If you cross-connect the data lines, then the light will turn orange and the HD will draw charging current. For my HD that's about 1.5A, the HD+ probably draws more, so your battery pack must be able to supply at least 2A as well as have the cross-connected data lines.
I can charge my ND+ from my desktop computer. In this case the data lines are not connected and charging is limited to 500ma. If using another charger and the data lines are connected it will charge at a higher current. I just think the Nook HD+ is very sensitive to the voltage.
I can charge my ND+ from my desktop computer. In this case the data lines are not connected and charging is limited to 500ma.
This appears to be a feature built into the Nook OS. As in, it will show that it's charging slowly when it is plugged into a USB connector that has data (like one on a computer). Otherwise it tends to ignore USB charging ports that do not have the data line termination.
So it's not really so much about voltage, but about what the Nook is looking for in the USB port.
Just to test the data lines being shorted theory I got a special cable that has the data lines shorted and tried that. It does not work. There is something else going on here. It does help my phone so not a waste.
That is odd. Even with a low power charger and an Android cable, the Nook should still show charging even if the battery is draining (due to the charger not keeping up).
I'd suggest a factory reset (make sure your backed up first though), and see if that clears it up. Might end up being a warranty issue.
That would be a handy cable to have, might just pick one up.