New battery replaced, and maintenance completed. Tested and confirmed to start and operate on a Super Famicom. Disinfected with anhydrous ethanol. Please assess the condition of the cartridge based on the images. Please purchase only if you are satisfied. The cartridge contacts have been polished and cleaned with anhydrous ethanol and polishing compound to remove dirt. While this maintenance has resulted in near-instant startup on our console, we cannot guarantee the same on other consoles. As this is an old product from several decades ago, it may require multiple insertions and removals to function properly.