How will I be able to replace the battery.. ? That was a real + for me when I was purchasing my Droid to know that I could easily replace the battery.. but not sure how I would do that on the NC ??
You, or someone else, replaces it. By the time it will need to be replaced you will probably be ready to upgrade the whole device. If it is less than a year old the you are probably under warranty and get a new one that way. Otherwise they are $15-30 and relatively easy to do. Find a place that does cellphone repair and they can help.
From what i've read the battery isn't supposed to be user replacable but if you're willing to pull your NC apart there will be something available in the future.