Midway / Atari TimeKeeper Lithium Battery (MP1037). This Battery should be replaced if your game doesn’t retain its settings and it Provides battery backup power for serial realtime clock, non-volatile TIMEKEEPER® and supervisor devices in the 28-pin or 44-pin SNAPHAT® SOIC package. Some of the games include: Cart Fury, Cruis’n Exotica, Gauntlet Legacy, Gauntlet Legends, NBA Showtime NBA on NBC, NFL Blitz 2000, Road Burners, Rush 2049, Rush 2049 SE, Vegas PCBs and War: Final Assault. This SOIC package is 120 mAh battery capacity which is the largest capacity in this series and includes the crystal. The SNAPHAT top contains both the battery and crystal and is designed to be “snapped on” after the SOIC is surface mounted on the PC board. Thus the two-piece solution prevents the battery and crystal from being exposed to the high temperatures of the surface-mount process.