NT portable battery compatibility (Technical Question)

[amishamigo]

Hi!

I just bought a nook tablet and I adore the thing. I will be doing some traveling (15+ hours) and bought a portable rechargable battery with 4k amp-hour capacity and an amperage rating of 1.5A per usb port.

I noticed the nook charges verrrry slowly when I connect it- probably because the nook charger is designed for a 2 amp input. My question is: Is the tablet charging slowly becaused of the reduced amperage input, or because it detects that it is not hooked up to an official nook charger?

I ask this because I found a 10KaH battery on amazon that delivers a full 2 amps per usb port, and if this will give me a quicker charge, I may swap the chargers out.

-Michael

[Reisnice]

Are you using the official Nook USB cable or the tip that came with the charger? The Nook cable has extra pins which allow it to charge faster, besides the hot transformer. I have an EnergizerToGo external battery which I made a female USB tip for. It does register charging when I use the Nook cable, but not with the included micro USB plug. I haven't timed it yet, though. The manufacturer offers to create plugs for devices and I requested a regular USB, but nothing yet. Normally, I charge mine with a 1 amp A/C converter and regular USB cable. It takes about overnight, which I think is easier on the battery than the hotter Nook charger, when I don't need thd speed.

[amishamigo]

Using the nook cable- the charger has USB ports and I attach the nook usb cable to the port.

[j-andersonjma]

I do not know the answer; however, my understanding is that the Nook cable has two additional (non-USB standard) pins that deliver the additional current.  So, I would guess that any device that does not supply power to these two pins will only deliver the standard USB charging rates.

[petesnook]

Unless the USB port on the 2 amp battery can connect to the additional pins on the Nook cable, I doubt the extra current will be transmitted to the Nook.

Edit - Sorry j-andersonjma, looks like I was composing my response as you were posting yours.

[amishamigo]

Thanks, the extra pins on there tells me what I need to know :]