Donkey Kong Country 3 SNES Game USA NTSC

Product Description 1. New 16 bit retro game for SNES game console; 2.RPG games save through battery, Action games have no save function; 3. Perfect performance on original game console; Important USA version game console choose "USA NTSC" Q & A 1. RPG game does not save, how do I resolve this problem? Please check if you have saved the game in right method; - open the cartridge and change the battery.