It is a replacement battery for game cartridges : Nintendo NES, Super Nintendo (SNES), Nintendo 64, Sega Mega Drive / Genesis, Sega
32X and a 3.8mm Gamebit to open Nintendo cartridges. I also have for the
same price an annunce with a 4.5mm Gamebit to open Sega cartridges. (I also have batteries for Game Boy, Game Boy Color and Game Boy Advance games, please look at my other
items).
If your game have
saving problems, it's probably because the battery is empty, you need to change it to fix the problem.
Changing
the battery is very easy, you have to desold the battery on the
cartridge and sold this one in the same place respecting the polarity.
The extremities will be folded to facilitate the transport.
I have a lot game/accessories for retro and recent consoles on my shop !