The way Apple is going to handle the battery replacement, ie just replace the whole iPad engraving does not seem to be very practical.
How long will a battery last 1 -2 years?? What are they going to do with John Doe 1111 Main Street jd@gmail.com on the back????
Laser engraving can be done easilly on the aluminum cover of the iPad, I own a laser engraving business and it can be done, you can engrave anodized aluminum, but not bare aluminum, the ipad back case is anodized and it can be engraved, I own an iPad but even owning the ipad and the laser engraver Im scared of damaging the back
im still deciding what graphic and informatikn Im going to put in but I will do it soon and post pictures.