Random factoid: The battery used in the Wii U Pro Controller is the exact same one used in Old 3DS (non-XL) systems. (CTR-003) The battery included with Wii U Pro controllers has a slightly different label, since it mentions WUP-005 in addition to CTR-001, but other than that, it's identical.
On another note: If anyone here uses HDDs partitioned using GPT that has an EFI System Partition prior to the Nintendont FAT32 partition (e.g. partitioned on a Mac), can you test the Nintendont build I linked here: https://github.com/FIX94/Nintendont/issues/202#issuecomment-216730870 - I'd like to get this merged, but I need some test results first.
On another note: If anyone here uses HDDs partitioned using GPT that has an EFI System Partition prior to the Nintendont FAT32 partition (e.g. partitioned on a Mac), can you test the Nintendont build I linked here: https://github.com/FIX94/Nintendont/issues/202#issuecomment-216730870 - I'd like to get this merged, but I need some test results first.