Nook HD Plus won't charge
I've seen dozens of reports of this. The symptoms are all about the same.
The unit drains the battery, even if you plug it in, it still drains, so although the charger and cable are fine, something inside the Nook doesn't get the memo.
It drains down to the point where it turns off. Then every time you plug it in, the light goes green, then amber, then off. The battery never charges.
I tried taking the unit apart and disconnecting the battery overnight, but that didn't seem to help. I suspect something in the software gets in a "vapor lock" where a dead battery condition is mistaken for a fully-charged battery condition. I only paid $109 for it refurbished, so it isn't worth another $60 for a new battery, and I don't think there is anything wrong with this battery.
If I knew the pinouts of the battery connector, I might try charging it without going through the Nook. Perhaps if it was actually fully charged, the "vapor" would realign.
Does anyone have another idea, apart from the nitwit stuff Barnes & Noble allows on its forums, like "push the cable in harder" or try another adapter. I notice they aren't interested in entertaining any idea that their firmware is at fault.