yeah its been on all day so far and I think I've heard the 'messages' chime from gmail maybe 2 or 3 times and thats it, its not dropped more than 4% in standby. so I dont think its a wake lock issue at all.
I'm gonna run her down entirely on this charge and then plug it in to help calibrate the battery guage.
question..do I HAVE to turn it on to charge it or can I just plug it in while turned off?
You can do a full power down on the SGT4N and charge it. When you plug the cord in you will get a brief black and white image of a battery followed by a 30 second animated image of a green battery charging, but the device remains powered down.
Previous Nook tablets would turn on when you plugged in the cord, but no so with the SGT4N.