Have you already damaged your New 3DS XL’s battery cover while trying to change the SD card? Or, are you looking to emulate the faceplates that are available for other parts of the world? Well, this might be the solution for you!
Nintendo’s online store is currently selling New 3DS XL battery covers; the top cover is not included. Battery covers for all four console models (New Black, New Red, Majora’s Mask, and Monster Hunter). While it’s not a perfect solution, you could use these covers to change up the back plate of your console in a similar way to the faceplates that are available for the smaller New 3DS.