Hi! just unpacked and fully charged my new N800..it's awesome! Just my firsts questions (donīt laugh at me, cause maybe those are stupid questions) -Can I use the N800 using the ac adaptor when I am home (instead of battery power)? -Can I remove the screen protection film that cames from factory, or is it best to keep it on place? (already peeled off but can place it again);it is necessary to buy some screen protectors to keep the display in good shape? -Do I need to get the battery fully empty before recharging it or, just cell phones, you can charge it despite it is not empty? Thanks!!