I’veread a few posts about tablets on the forum. This question is alittle different. My impression is that there are “tablets”(e.g., iPad or Galaxy Note) that would allow me to go outside andsketch with a relatively light app like SketchBook, and there are“tablet/computers” (e.g., Surface 3 Pro and Cintiq Companion)that would allow me not only to sketch but also to run full-blownapplications like Zbrush and Photoshop. However, I haven’t foundanything in either category that allows for replaceable batteries. To me, shelling out a thousand bucks or more for a machine w/oreplaceable batteries doesn’t make sense. (I know that’ssubjective.) Does anyone know of a device that has reasonable screensize (>= 10”), replaceable batteries, and a screen that at leastallows for a decent sketching experience?