Well...2 days later after getting a new battery from B&N I went to use my nook- had wifi off (airplane mode on) and it was on sleep. It went from 100 % charge to dead in 2 days. Not being used. I read on the screen "battery is too low- must charge before it will turn on" ( something like that)

. I plugged it in to charge and nothing- DEAD-dead-dead- again!!!

So back to the store I went for a third swap. I think the internal charging system was draining the battery to nothing even when off. That's what it was like when I brought it home new. Dead. New one seems to be OK but the battery does go fast when even when sleeping. Is anyone else having batteries drain with very little use? Wifi is off. Does softrooting make the battery drain faster? I'm thinking of going back to stock software.
Does the nook go dead when battery dies? Is it standard to have to remove battery, plug in to wall, replace battery and start charging from that point? If so, that's a huge inconveniance.. Might as well as turn it off instead of sleeping. At least that way a dead battery can't sneak up on you.